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常用JavaScript 技巧剖析 .

2014年09月05日 ⁄ 综合 ⁄ 共 34422字 ⁄ 字号 评论关闭

1. oncontextmenu="window.event.returnValue=false" 将彻底屏蔽鼠标右键
<table border oncontextmenu=return(false)><td>no</table> 可用于Table

2. <body onselectstart="return false"> 取消选取、防止复制

3. onpaste="return false" 不准粘贴

4. oncopy="return false;" oncut="return false;" 防止复制

5. <link rel="Shortcut Icon" href="favicon.ico"> IE地址栏前换成自己的图标

6. <link rel="Bookmark" href="favicon.ico"> 可以在收藏夹中显示出你的图标

7. <input style="ime-mode:disabled"> 关闭输入法

8. 永远都会带着框架
<script language="JavaScript"><!--
if (window == top)top.location.href = "frames.htm"; //frames.htm为框架网页
// --></script>

9. 防止被人frame
<SCRIPT LANGUAGE=JAVASCRIPT><!--
if (top.location != self.location)top.location=self.location;
// --></SCRIPT>

10. 网页将不能被另存为
<noscript><iframe src="/blog/*.html>";</iframe></noscript>

11. <input type=button value=查看网页源代码

onclick="window.location = "view-source:"+ "
http://www.williamlong.info"">

12.删除时确认
<a href="javascript:if(confirm("确实要删除吗?"))location="boos.asp?&areyou=删除&page=1"">删除</a>

13. 取得控件的绝对位置
//Javascript
<script language="Javascript">
function getIE(e){
var t=e.offsetTop;
var l=e.offsetLeft;
while(e=e.offsetParent)
alert("top="+t+"/nleft="+l);
}
</script>

//VBScript
<script language="VBScript"><!--
function getIE()
dim t,l,a,b
set a=document.all.img1
t=document.all.img1.offsetTop
l=document.all.img1.offsetLeft
while a.tagName<>"BODY"
set a = a.offsetParent
t=t+a.offsetTop
l=l+a.offsetLeft
wend
msgbox "top="&t&chr(13)&"left="&l,64,"得到控件的位置"
end function
--></script>

14. 光标是停在文本框文字的最后
<script language="javascript">
function cc()
{
var e = event.srcElement;
var r =e.createTextRange();
r.moveStart("character",e.value.length);
r.collapse(true);
r.select();
}
</script>
<input type=text name=text1 value="123" onfocus="cc()">

15. 判断上一页的来源
javascript:
document.referrer

>
16. 最小化、最大化、关闭窗口
<object id=hh1 classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">
<param name="Command" value="Minimize"></object>
<object id=hh2 classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">
<param name="Command" value="Maximize"></object>
<OBJECT id=hh3 classid="clsid:adb880a6-d8ff-11cf-9377-00aa003b7a11">
<PARAM NAME="Command" VALUE="Close"></OBJECT>
<input type=button value=最小化 onclick=hh1.Click()>
<input type=button value=最大化 onclick=hh2.Click()>
<input type=button value=关闭 onclick=hh3.Click()>
本例适用于IE

17.屏蔽功能键Shift,Alt,Ctrl
<script>
function look(){
if(event.shiftKey)
alert("禁止按Shift键!"); //可以换成ALT CTRL
}
document.onkeydown=look;
</script>

18. 网页不会被缓存
<META HTTP-EQUIV="pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Cache-Control" CONTENT="no-cache, must-revalidate">
<META HTTP-EQUIV="expires" CONTENT="Wed, 26 Feb 1997 08:21:57 GMT">
或者<META HTTP-EQUIV="expires" CONTENT="0">

19.怎样让表单没有凹凸感?
<input type=text style="border:1 solid #000000">

<input type=text style="border-left:none; border-right:none; border-top:none; border-bottom:

1 solid #000000"></textarea>

20.<div><span>&<layer>的区别?

<div>(division)用来定义大段的页面元素,会产生转行
<span>用来定义同一行内的元素,跟<div>的唯一区别是不产生转行
<layer>是ns的标记,ie不支持,相当于<div>

21.让弹出窗口总是在最上面:
<body onblur="this.focus();">

22.不要滚动条?

让竖条没有:
<body style="overflow:scroll;overflow-y:hidden">
</body>
让横条没有:
<body style="overflow:scroll;overflow-x:hidden">
</body>
两个都去掉?更简单了
<body scroll="no">
</body>

23.怎样去掉图片链接点击后,图片周围的虚线?
<a href="#" onFocus="this.blur()"><img src="/blog/logo.jpg" border=0></a>

24.电子邮件处理提交表单
<form name="form1" method="post" action="
mailto:****@***.com"
enctype="text/plain">
<input type=submit>
</form>

25.在打开的子窗口刷新父窗口的代码里如何写?
window.opener.location.reload()

26.如何设定打开页面的大小
<body onload="top.resizeTo(300,200);">
打开页面的位置<body onload="top.moveBy(300,200);">

27.在页面中如何加入不是满铺的背景图片,拉动页面时背景图不动

<STYLE>
body
{background-image:url(/blog/logo.gif); background-repeat:no-repeat;
background-position:center;background-attachment: fixed}
</STYLE>

28. 检查一段字符串是否全由数字组成
<script language="Javascript"><!--
function checkNum(str){return str.match(//D/)==null}
alert(checkNum("1232142141"))
alert(checkNum("123214214a1"))
// --></script>

29. 获得一个窗口的大小
document.body.clientWidth; document.body.clientHeight

30. 怎么判断是否是字符
if (/[^/x00-/xff]/g.test(s)) alert("含有汉字");
else alert("全是字符");

31.TEXTAREA自适应文字行数的多少
<textarea rows=1 name=s1 cols=27 onpropertychange="this.style.posHeight=this.scrollHeight">
</textarea>

32. 日期减去天数等于第二个日期
<script language=Javascript>
function cc(dd,dadd)
{
//可以加上错误处理
var a = new Date(dd)
a = a.valueOf()
a = a - dadd * 24 * 60 * 60 * 1000
a = new Date(a)
alert(a.getFullYear() + "年" + (a.getMonth() + 1) + "月" + a.getDate() + "日")
}
cc("12/23/2002",2)
</script>

33. 选择了哪一个Radio
<HTML><script language="vbscript">
function checkme()
for each ob in radio1
if ob.checked then window.alert ob.value
next
end function
</script><BODY>
<INPUT name="radio1" type="radio" value="style" checked>Style
<INPUT name="radio1" type="radio" value="barcode">Barcode
<INPUT type="button" value="check" onclick="checkme()">
</BODY></HTML>

34.脚本永不出错
<SCRIPT LANGUAGE="JavaScript">
<!-- Hide
function killErrors() {
return true;
}
window.onerror = killErrors;
// -->
</SCRIPT>

35.ENTER键可以让光标移到下一个输入框
<input onkeydown="if(event.keyCode==13)event.keyCode=9">

36. 检测某个网站的链接速度:
把如下代码加入<body>区域中:
<script language=Javascript>
tim=1
setInterval("tim++",100)
b=1
var autourl=new Array()
autourl[1]="
www.njcatv.net"
autourl[2]="javacool.3322.net"
autourl[3]="
www.sina.com.cn"
autourl[4]="
www.nuaa.edu.cn"
autourl[5]="
www.cctv.com"
function butt(){
document.write("<form name=autof>")
for(var i=1;i<autourl.length;i++)
document.write("<input type=text name=txt"+i+" size=10 value="/blog/测试中......>" =》<input type=text

name=url"+i+" size=40> =》<input type=button value=GO

onclick=window.open(this.form.url"+i+".value)><br/>")
document.write("<input type=submit value=刷新></form>")
}
butt()
function auto(url)
else

b++
}
function run(){for(var i=1;i<autourl.length;i++)document.write("<img src=http://"+autourl+"/"+Math.random()+" width=1 height=1

onerror=auto("http://"+autourl+"")>")}
run()</script>

37. 各种样式的光标
auto :标准光标
default :标准箭头
hand :手形光标
wait :等待光标
text :I形光标
vertical-text :水平I形光标
no-drop :不可拖动光标
not-allowed :无效光标
help :?帮助光标
all-scroll :三角方向标
move :移动标
crosshair :十字标
e-resize
n-resize
nw-resize
w-resize
s-resize
se-resize
sw-resize

38.页面进入和退出的特效
进入页面<meta http-equiv="Page-Enter" content="revealTrans(duration=x, transition=y)">
推出页面<meta http-equiv="Page-Exit" content="revealTrans(duration=x, transition=y)">

这个是页面被载入和调出时的一些特效。duration表示特效的持续时间,以秒为单位。transition表示使用哪种特效,取值为1-23:
  0 矩形缩小
  1 矩形扩大
  2 圆形缩小
  3 圆形扩大
  4 下到上刷新
  5 上到下刷新
  6 左到右刷新
  7 右到左刷新
  8 竖百叶窗
  9 横百叶窗
  10 错位横百叶窗
  11 错位竖百叶窗
  12 点扩散
  13 左右到中间刷新
  14 中间到左右刷新
  15 中间到上下
  16 上下到中间
  17 右下到左上
  18 右上到左下
  19 左上到右下
  20 左下到右上
  21 横条
  22 竖条
  23 以上22种随机选择一种

39.在规定时间内跳转
<META http-equiv=V="REFRESH" content="5;URL=http://www.williamlong.info">

40.网页是否被检索
<meta name="ROBOTS" content="属性值">
  其中属性值有以下一些:
  属性值为"all": 文件将被检索,且页上链接可被查询;
  属性值为"none": 文件不被检索,而且不查询页上的链接;
  属性值为"index": 文件将被检索;
  属性值为"follow": 查询页上的链接;
  属性值为"noindex": 文件不检索,但可被查询链接;
  属性值为"nofollow": 文件不被检索,但可查询页上的链接。

最大化窗口?
<script language="JavaScript">
<!--
self.moveTo(0,0)
self.resizeTo(screen.availWidth,screen.availHeight)
//-->
</script>
解 决问题:由于层与下拉框之间的优先级是:下拉框 > 层,因此在显示的时候,会因为优先级的次序而会出现如上问题。(如果几个元素都是层的话,我们可以通过层的 z-index 属性来设置)解决办法就是:给层中放一个优先级比下拉框更高的元素(iframe),从而解决此问题!具体解决代码如下:

<div id="menu" style="position:absolute; visibility:hidden; top:20px; left:20px; width:100px; height:200px; background-color:#6699cc;">
<table>
<tr><td>item 1</td></tr>
<tr><td>item 2</td></tr>
<tr><td>item 3</td></tr>
<tr><td>item 4</td></tr>
<tr><td>item 5</td></tr>
</table>
<iframe src="/blog/javascript:false" style="position:absolute; visibility:inherit; top:0px; left:0px; width:100px; height:200px; z-index:-1; filter='progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0)';"></iframe>
</div>

<a href="#" onclick="document.getElementById('menu').style.visibility='visible'">menu</a>

<form>
<select><option>A form selection list</option></select>
</form>

输入框也可以做的很漂亮了
<div align="center"><input type="hidden" name="hao" value="yes">
外向数:<input
name=answer
style="color: rgb(255,0,0); border-left: medium none; border-right: medium none; border-top: medium none; border-bottom: 1px solid rgb(192,192,192)">
 没回答的题数:<input
name=unanswer id="unanswer"
style="color: rgb(255,0,0); border-left: medium none; border-right: medium none; border-top: medium none; border-bottom: 1px solid rgb(192,192,192)">
<br/>
总得分:
<input
name=score id="score"
style="color: rgb(255,0,0); border-left: medium none; border-right: medium none; border-top: medium none; border-bottom: 1px solid rgb(192,192,192)">
 结    论:
<input
name=xgjg id="xgjg"
style="color: rgb(255,0,0); border-left: medium none; border-right: medium none; border-top: medium none; border-bottom: 1px solid rgb(192,192,192)">
<br/>
<br/>

<input onClick=processForm(this.form) style="FONT-FAMILY: 宋体; FONT-SIZE: 9pt" type=button value=查看结果 name="button">

<input type="reset" name="Submit" value="重做">
</div>
注意:修改<body>为<body onload="max.Click()">即为打开最大

化窗口,而如果改为<body onload="min.Click()">就变为窗口一打开就最小化

<object id="min" type="application/x-oleobject" classid="clsid:adb880a6-d8ff-11cf-9377-00aa003b7a11">
<param name="Command" value="Minimize">
</object> <object id="max" type="application/x-oleobject" classid="clsid:adb880a6-d8ff-11cf-9377-00aa003b7a11">
<param name="Command" value="Maximize">
</object>
</body>

页面自动刷新(说明)

当你做网页时,是不是有的时候想让你的网页自动不停刷新,或者过一段时间自动跳转到另外一个你自己设定的页面?其实实现这个效果非常地简单,而且这个效果甚至不能称之为特效。你只要把如下代码加入你的网页中就可以了。

1,页面自动刷新:把如下代码加入<head>区域中<meta http-equiv="refresh" content="20">,其中20指每隔20秒刷新一次页面.

2, 页面自动跳转:把如下代码加入<head>区域中<meta http-equiv="refresh" content="20;url=http://www.williamlong.info">,其中20指隔20秒后跳转到http: //www.williamlong.info页面。

页面自动关闭

5000是指时间<body onLoad="setTimeout(window.close, 5000)">

弹出窗口自动关闭

10秒后弹出窗口自动关闭

注意:在新的tan.htm的body中要加 <onLoad="closeit()">
head

<script language="JavaScript">

<!--

var gt = unescape('%3e');

var popup = null;

var over = "Launch Pop-up Navigator";

popup = window.open('', 'popupnav', 'width=225,height=235,resizable=1,scrollbars=auto');

if (popup != null) {

if (popup.opener == null) {

popup.opener = self;

}

popup.location.href = 'tan.htm';

}

// -->

</script>
<body>注意:这段代码是在新建文件中的
<script language="JavaScript">

function closeit()

</script>

这个可不是<iframe>(引用)呀。是直接调用的。以下代码加入<body>区域

<object type="text/x-scriptlet" width="800" height="1000" data="../index.htm">
</object>

============================================================================

用java实现script语句的完成

/===================================== ErrorCheck.java =====================================

package cn.rzdd.cbs.util;
/**
* @author donkey.
* @version 1.2
* @expression javascript 代码来校验表单的.
* @Tel:020 33586834
* @Email:
donkeyzheng@163.net
*/

public class ErrorCheck    {

/* public: the javascript string */
String errorCheckStr;

/* public: the form name you used */
public String formName;

public void setFormName(String formName) {
   this.formName = formName;
}

/***************************************************************************/
  *        public: constructor functions
  *        构造函数
/***************************************************************************/
public ErrorCheck()    {
   this.errorCheckStr =
     "<script ID=clientEventHandlersJS language=javascript>/n" +
     "<!--" + "/n";
   this.neededFunction();    // load the needed functions
   this.errorCheckStr +=
     "function errorCheck() {" + "/n";
  }

  /***************************************************************************/
   *        public: export javascript script
   *        输出 javascript 脚本
  /***************************************************************************/
  public String ErrorCheckScript()    {
    this.errorCheckStr +=
      "}" + "/n" +
      "//-->" + "/n" +
      "</script>" + "/n";
    return this.errorCheckStr;
  }

  /***************************************************************************/
   *        public: check if null value
   *        检查录入框值是否为空
  /***************************************************************************/
  public void inputnull(String inputName, String errorMsg)    {
    this.errorCheckStr +=
      "  if(fucChecknull(document."+formName+"."+inputName+".value) == 0) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "  }" + "/n/n";
  }

  /***************************************************************************/
   *        public: check the numeric
   *        检查录入框值是否是数字
  /***************************************************************************/
  public void numericCheck(String inputName, String errorMsg)    {
    this.errorCheckStr +=
      "  if(fucCheckNUM(trim(document."+formName+"."+inputName+".value)) == 0) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "  }" + "/n/n";
  }

  /***************************************************************************/
   *        public: check the length
   *        检查录入框值的长度
  /***************************************************************************/
  public void lengthCheck(String inputName, String errorMsg, int MinLength, int MaxLength) {
    this.errorCheckStr +=
      "  if((fucCheckLength(document."+formName+"."+inputName+".value)<"+MinLength+" || " + "/n" +
      "    fucCheckLength(document."+formName+"."+inputName+".value)>"+MaxLength+") && fucCheckLength(document."+formName+"."+inputName+".value)!=0) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "  }" + "/n/n";
  }

  /***************************************************************************/
   *        public: check the email
   *        检查录入框值是否是正确的EMAIL格式
  /***************************************************************************/
  public void emailCheck(String inputName, String errorMsg)    {
    this.errorCheckStr +=
      "  if(chkemail(document."+formName+"."+inputName+".value) == 0) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "  }" + "/n/n";
  }

  /***************************************************************************/
   *        public: check the telephone number
   *        检查录入框值是否是电话分机号码
  /***************************************************************************/
  public void telCheck(String inputName, String errorMsg)    {
    this.errorCheckStr +=
      "  if(fucCheckTEL(document."+formName+"."+inputName+".value) == 0) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "  }" + "/n/n";
  }

  /***************************************************************************/
   *        public: check the telephone or fax number
   *        检查录入框值是否是普通电话、传真号码
  /***************************************************************************/
  public void faxTelCheck(String inputName, String errorMsg)    {
    this.errorCheckStr +=
      "  if(iscommontel(document."+formName+"."+inputName+".value) == 0) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "  }" + "/n/n";
  }

  /***************************************************************************/
   *        public: check if the input value contian the prefered string
   *        检查录入框值是否是包含给定字串
  /***************************************************************************/
  public void stringCheck(String inputName, String errorMsg, String string)    {
    this.errorCheckStr +=
      "  if(document." + formName + "." + inputName +".value.length != 0 && "+
      "     document."+  formName + "." + inputName +".value.indexOf(/""+string+
      "/") == -1) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "  }" + "/n/n";
  }

  /***************************************************************************/
   *        public: check if the input value contain the denyed string
   *        检查录入框值是否是包含给禁止的字串
  /***************************************************************************/
  public void denyStrCheck(String inputName, String errorMsg, String string)    {
    this.errorCheckStr +=
        "  if (document." + formName + "." + inputName +
        ".value.length != 0 && " + "/n" +
        "    document." + formName + "." + inputName + ".value.indexOf(/"" +
        string + "/") != -1) {" + "/n" +
        "    alert(/"" + errorMsg + "./");" + "/n" +
        "    document." + formName + "." + inputName + ".focus();" + "/n" +
        "    return(false);" + "/n" +
        "  }" + "/n/n";
  }

  /***************************************************************************/
   *        public: check the YYYY format date
   *        检查录入框值是否是YYYY的日期格式
  /***************************************************************************/
  public void dateCheckY(String inputName, String errorMsg)    {
    this.errorCheckStr +=
      "  if(chkdateY(document."+formName+"."+inputName+".value) == 0) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "  }" + "/n/n";
  }

  /***************************************************************************/
   *        public: check the YYYY-MM format date
   *        检查录入框值是否是YYYY-MM的日期格式
  /***************************************************************************/
  public void dateCheckYM(String inputName, String errorMsg)    {
    this.errorCheckStr +=
      "  if(chkdateYM(document."+formName+"."+inputName+".value) == 0) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "  }" + "/n/n";
  }

  /***************************************************************************/
   *        public: check the YYYY-MM-DD format date
   *        检查录入框值是否是YYYY-MM-DD的日期格式
  /***************************************************************************/
  public void dateCheckYMD(String inputName, String errorMsg)    {
    this.errorCheckStr +=
      "  if(chkdateYMD(document."+formName+"."+inputName+".value) == 0) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "  }" + "/n/n";
  }

  /***************************************************************************/
   *        public: check the YYYY-MM-DD YYYY-MM  YYYY  format date
   *        检查录入框值是否是YYYY-MM-DD YYYY-MM  YYYY 的日期格式
  /***************************************************************************/
  public void dateCheckAny(String inputName, String errorMsg)    {
    this.errorCheckStr +=
      "  if(chkdateY(document."+formName+"."+inputName+".value) == 0" +
      "  && chkdateYM(document."+formName+"."+inputName+".value) == 0" +
      "  && chkdateYMD(document."+formName+"."+inputName+".value) == 0" +
      "  && document." + formName + "." + inputName +".value.length != 0 " +
      "  && document."+  formName + "." + inputName +".value.indexOf("+"/"任何时候!/""+
      ") == -1) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "  }" + "/n/n";

  }

  /***************************************************************************/
   *        public: check the YYYY-MM-DD hh:mm format date
   *        检查录入框值是否是YYYY-MM-DD hh:mm 的日期格式
  /***************************************************************************/
  public void dateCheckYMDhm(String inputName, String errorMsg)    {
    this.errorCheckStr +=
      "  if(chkdateYMDhm(document."+formName+"."+inputName+".value) == 0) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "  }" + "/n/n";
  }

  /***************************************************************************/
   *        public: check one date must before the other date
   *        检查前一个日期是否在另一个日期以前,格式为YYYY-MM-dd或者YYYY-MM-dd h:m。。
  /***************************************************************************/
  public void dateCheckorder(String inputName1,String inputName2,String errorMsg)    {
    this.errorCheckStr +=
      "  if(chkdateorder(document."+formName+"."+inputName1+".value,document."+formName+"."+inputName2+".value) == 0) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName2+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "  }" + "/n/n";
  }

  /***************************************************************************/
   *        public: check one date must before the other date
   *        检查前一个日期是否在另一个日期以前,前一个日期直接传入日期字符串,格式为YYYY-MM-dd或者YYYY-MM-dd h:m。
  /***************************************************************************/
  public void dateCheckorderS(String inputName1,String inputName2,String errorMsg)    {
    this.errorCheckStr +=
      "  if(chkdateorder(/""+inputName1+"/",document."+formName+"."+inputName2+".value) == 0) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName2+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "  }" + "/n/n";
  }

  /***************************************************************************/
   *        public: check if the post code.
   *        检查是否是邮政编码。
  /***************************************************************************/
  public void postalCodeCheck(String inputName,String errorMsg)    {
    this.errorCheckStr +=
      "  if(isPostalCode(document."+formName+"."+inputName+".value) == 0) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "  }" + "/n/n";
  }
  /***************************************************************************/
   *        public: check if the mobile phone.
   *        检查是否是手机号码。
  /***************************************************************************/
  public void mobileCheck(String inputName,String errorMsg)    {
    this.errorCheckStr +=
      "  if(isMobile(document."+formName+"."+inputName+".value) == 0) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "  }" + "/n/n";
  }

  /***************************************************************************/
   *        public: check if the ID card.
   *        检查是否是身份证号码。
  /***************************************************************************/
  public void idCardCheck(String inputName,String errorMsg)    {
    this.errorCheckStr +=
      "  if(CheckNum15(document."+formName+"."+inputName+".value) == 0 && CheckNum18(document."+formName+"."+inputName+".value) == 0 ) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "  }" + "/n/n";
  }

  /***************************************************************************/
   *        public: check with the condition.
   *        根据选择条件来检查是录入框的值,如果为0,则检查是否为身份证,如果为1,则检查是否为其他证件号码。
  /***************************************************************************/
  public void seletAnICheck(String inputName1, String inputName2, String errorMsg)    {
    this.errorCheckStr +=
      "  if(document."+formName+"."+inputName1+".value==/"0/") {" + "/n" +
      "  if(CheckNum15(document."+formName+"."+inputName2+".value) == 0 && CheckNum18(document."+formName+"."+inputName2+".value) == 0 ) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName2+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "    }" + "/n"+
      "  }" + "/n"+
      "  else {" + "/n" +
      "  if(isNumorChar(document."+formName+"."+inputName2+".value) == 0) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName2+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "  }" + "/n"+
      "  }" + "/n/n";
  }

  /***************************************************************************/
   *        public: check user.
   *        检查用户名的输入。
  /***************************************************************************/
  public void userNameCheck(String inputName,String errorMsg)    {
    this.errorCheckStr +=
      "  if(isRegisterUserName(document."+formName+"."+inputName+".value) == 0) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "  }" + "/n/n";
  }

  /***************************************************************************/
   *        public: check password.
   *        检查密码的输入。
  /***************************************************************************/
  public void passwdCheck(String inputName,String errorMsg)    {
    this.errorCheckStr +=
      "  if(isPasswd(document."+formName+"."+inputName+".value) == 0) {" + "/n" +
      "    alert(/""+errorMsg+"./");" + "/n" +
      "    document."+formName+"."+inputName+".focus();" + "/n" +
      "    return(false);" + "/n" +
      "  }" + "/n/n";
  }

  /***************************************************************************/
   *        public: wipe off blanks.
   *        去除空格。
  /***************************************************************************/
  public void wipeblank(String inputName)    {
    this.errorCheckStr +=
      "document."+formName+"."+inputName+".value="+"document."+formName+"."+inputName+".value.trim();" + "/n" +
    "/n/n";
  }

  /***************************************************************************/
   *        public: wipe off blanks.
   *        去除空格。
  /***************************************************************************/
  public void comparenumber(String inputName1,String inputName2,String errorMsg)    {
    this.errorCheckStr +=
      "if(document."+formName+"."+inputName1+".value.trim()!='' && document."+formName+"."+inputName2+".value.trim()!=''){" + "/n" +
      "  if(document."+formName+"."+inputName1+".value>document."+formName+"."+inputName2+".value){" + "/n" +
      "   alert(/""+errorMsg+"./");" + "/n" +
      "   document."+formName+"."+inputName2+".focus();" + "/n" +
      "   return(false);" + "/n" +
      "    }" + "/n"+
      "  }" + "/n/n";
  }

  public void neededFunction()    {
    this.errorCheckStr +=
      "//检查是否为空" + "/n" +
      "function fucChecknull(str) {" + "/n" +
      "  for(var  i=0;i<str.length && str.charAt(i)==' ';i++  );" + "/n" +
      "  for(var  j=str.length;j>0 && str.charAt(j-1)==' ';j--);" + "/n" +
      "  if(i>=j)  return  0;" + "/n" +
      "  else return  1;" + "/n" +
      " }"+ "/n/n" +

      "//去除空格" + "/n" +
      "function trim(str) " + "/n" +
      "{ " + "/n" +
      "  return str.replace(/(^//s*)|(
//s*$)/g,
/"/"); " + "/n" +
      "}  "+ "/n/n" +

      "//检查是否为数字" + "/n" +
      "function fucCheckNUM(NUM) {" + "/n" +
      "  var i,j,strTemp;" + "/n" +
      "  strTemp=/"0123456789.+-/";" + "/n" +
      "  if ( NUM.length == 0) return 1;" + "/n" +
      "  for (i=0;i<NUM.length;i++)    {" + "/n" +
      "    j = strTemp.indexOf(NUM.charAt(i));" + "/n" +
      "    if (j==-1) {" + "/n" +
      "      //说明有字符不是数字" + "/n" +
      "      return 0;" + "/n" +
      "    }" + "/n" +
      "  }" + "/n" +
      "  //说明是数字" + "/n" +
      "  return 1;" + "/n" +
      "}" + "/n/n" +

      "//检查字符串的长度" + "/n" +
      "function fucCheckLength(strTemp) {" + "/n" +
      "  var i,sum;" + "/n" +
      "  sum=0;" + "/n" +
      "  for(i=0;i<strTemp.length;i++) {" + "/n" +
      "    if ((strTemp.charCodeAt(i)>=0) && (strTemp.charCodeAt(i)<=255))" + "/n" +
      "      sum=sum+1;" + "/n" +
      "    else" + "/n" +
      "      sum=sum+2;" + "/n" +
      "  }" + "/n" +
      "  return sum;" + "/n" +
      "}" + "/n/n" +

      "//检查是否为Email Address" + "/n" +
      "function chkemail(a)    {" + "/n" +
      "  var i=a.length;" + "/n" +
      " if(i==0) return 1;" + "/n" +
      "  var temp = a.indexOf(
'@');"
+ "/n" +
      "  var tempd = a.indexOf('.');" + "/n" +
      "  if (temp >= 1) {" + "/n" +
      "    if ((i-temp) >= 3) {" + "/n" +
      "      if (tempd!=-1) {" + "/n" +
      "        return 1;" + "/n" +
      "      }" + "/n" +
      "    }" + "/n" +
      "  }" + "/n" +
      "  return 0;" + "/n" +
      "}" + "/n/n" +

      "//检查是否为电话号码。" + "/n" +
      "function fucCheckTEL(TEL) {" + "/n" +
      "  var i,j,strTemp;" + "/n" +
      "  strTemp=/"0123456789-()#/";" + "/n" +
      "  if (TEL.length == 0) return 1;" + "/n" +
      "  for (i=0;i<TEL.length;i++) {" + "/n" +
      "    j=strTemp.indexOf(TEL.charAt(i));" + "/n" +
      "    if (j==-1) {" + "/n" +
      "      //说明有字符不合法" + "/n" +
      "      return 0;" + "/n" +
      "    }" + "/n" +
      "  }" + "/n" +
      "  //说明合法" + "/n" +
      "  return 1;" + "/n" +
      "}" + "/n/n" +

      "//检查日期是否为(YYYY)的格式。" + "/n" +
      "function chkdateY(s)" + "/n"+
      "{" + "/n"+
      " var patrn=/^[0-9]{4}$/;" + "/n"+
      " if (!patrn.exec(s) && s!='') return 0;" + "/n"+
      " return 1;" + "/n"+
      "}" + "/n/n" +

      "//检查日期是否为(YYYY-MM-DD)的格式。" + "/n" +
      "function chkdateYMD(datestr) {" + "/n" +
      "  var lthdatestr" + "/n" +
      "  if (datestr != /"/")" + "/n" +
      "    lthdatestr= datestr.length ;" + "/n" +
      "  else" + "/n" +
      "    lthdatestr=0;" + "/n" +
      "  var tmpy=/"/";" + "/n" +
      "  var tmpm=/"/";" + "/n" +
      "  var tmpd=/"/";" + "/n" +
      "  //var datestr;" + "/n" +
      "  var status;" + "/n" +
      "  status=0;" + "/n" +
      "  if ( lthdatestr== 0)" + "/n" +
      "    return 1;" + "/n" +
      "  for (i=0;i<lthdatestr;i++) {" + "/n" +
      "    if (datestr.charAt(i)== '-') {" + "/n" +
      "      status++;" + "/n" +
      "    }" + "/n" +
      "    if (status>2) {" + "/n" +
      "      return 0;" + "/n" +
      "    }" + "/n" +
      "    if ((status==0) && (datestr.charAt(i)!='-')) {" + "/n" +
      "      tmpy=tmpy+datestr.charAt(i);" + "/n" +
      "    }" + "/n" +
      "    if ((status==1) && (datestr.charAt(i)!='-')) {" + "/n" +
      "      tmpm=tmpm+datestr.charAt(i);" + "/n" +
      "    }" + "/n" +
      "    if ((status==2) && (datestr.charAt(i)!='-')) {" + "/n" +
      "      tmpd=tmpd+datestr.charAt(i);" + "/n" +
      "    }" + "/n" +
      "  }" + "/n" +
      "  year=new String (tmpy);" + "/n" +
      "  month=new String (tmpm);" + "/n" +
      "  day=new String (tmpd);" + "/n" +
      "  if ((tmpy.length!=4) || (tmpm.length>2) || (tmpd.length>2)) {" + "/n" +
      "    return 0;" + "/n" +
      "  }" + "/n" +
      "  if (!((1<=month) && (12>=month) && (31>=day) && (1<=day)) ) {" + "/n" +
      "    return 0;" + "/n" +
      "  }" + "/n" +
      "  if (!((year % 4)==0) && (month==2) && (day==29)) {" + "/n" +
      "    return 0;" + "/n" +
      "  }" + "/n" +
      "  if ((month<=7) && ((month % 2)==0) && (day>=31)) {" + "/n" +
      "    return 0;" + "/n" +
      "  }" + "/n" +
      "  if ((month>=8) && ((month % 2)==1) && (day>=31)) {" + "/n" +
      "    return 0;" + "/n" +
      "  }" + "/n" +
      "  if ((month==2) && (day==30)) {" + "/n" +
      "    return 0;" + "/n" +
      "  }" + "/n" +
      "  return 1;" + "/n" +
      "}" + "/n/n"+

      "//检查日期是否为(YYYY-MM)的格式。" + "/n" +
      "function chkdateYM(datestr) {" + "/n" +
      "  var lthdatestr" + "/n" +
      "  if (datestr != /"/")" + "/n" +
      "    lthdatestr= datestr.length ;" + "/n" +
      "  else" + "/n" +
      "    lthdatestr=0;" + "/n" +
      "  var tmpy=/"/";" + "/n" +
      "  var tmpm=/"/";" + "/n" +
      "  //var datestr;" + "/n" +
      "  var status;" + "/n" +
      "  status=0;" + "/n" +
      "  if ( lthdatestr== 0)" + "/n" +
      "    return 1;" + "/n" +
      "  for (i=0;i<lthdatestr;i++) {" + "/n" +
      "    if (datestr.charAt(i)== '-') {" + "/n" +
      "      status++;" + "/n" +
      "    }" + "/n" +
      "    if (status>1) {" + "/n" +
      "      return 0;" + "/n" +
      "    }" + "/n" +
      "    if ((status==0) && (datestr.charAt(i)!='-')) {" + "/n" +
      "      tmpy=tmpy+datestr.charAt(i);" + "/n" +
      "    }" + "/n" +
      "    if ((status==1) && (datestr.charAt(i)!='-')) {" + "/n" +
      "      tmpm=tmpm+datestr.charAt(i);" + "/n" +
      "    }" + "/n" +
      "  }" + "/n" +
      "  year=new String (tmpy);" + "/n" +
      "  month=new String (tmpm);" + "/n" +
      "  if ((tmpy.length!=4) || (tmpm.length>2) ) {" + "/n" +
      "    return 0;" + "/n" +
      "  }" + "/n" +
      "  if (!((1<=month) && (12>=month) )) {" + "/n" +
      "    return 0;" + "/n" +
      "  }" + "/n" +
      "  return 1;" + "/n" +
      "}" + "/n/n"+

    "//检查是否为(YYYY-MM-DD hh:mm)的格式。" + "/n" +
    "function chkdateYMDhm(datestr) {" + "/n" +
    "  var lthdatestr" + "/n" +
    "  if (datestr != /"/")" + "/n" +
    "    lthdatestr= datestr.length ;" + "/n" +
    "  else" + "/n" +
    "    lthdatestr=0;" + "/n" +
    "  var tmpy=/"/";" + "/n" +
    "  var tmpm=/"/";" + "/n" +
    "  var tmpd=/"/";" + "/n" +
    "  var tmph=/"/";" + "/n" +
    "  var tmpmi=/"/";" + "/n" +
    "  //var datestr;" + "/n" +
    "  var status;" + "/n" +
    "  status=0;" + "/n" +
    "  if ( lthdatestr== 0)" + "/n" +
    "    return 1;" + "/n" +
    "  for (i=0;i<lthdatestr;i++) {" + "/n" +
    "    if (datestr.charAt(i)== '-'||datestr.charAt(i)==' '||datestr.charAt(i)==':') {" + "/n" +
    "      status++;" + "/n" +
    "    }" + "/n" +
    "    if (status>4) {" + "/n" +
    "      return 0;" + "/n" +
    "    }" + "/n" +
    "    if ((status==0) && (datestr.charAt(i)!='-')) {" + "/n" +
    "      tmpy=tmpy+datestr.charAt(i);" + "/n" +
    "    }" + "/n" +
    "    if ((status==1) && (datestr.charAt(i)!='-')) {" + "/n" +
    "      tmpm=tmpm+datestr.charAt(i);" + "/n" +
    "    }" + "/n" +
    "    if ((status==2) && (datestr.charAt(i)!=' ') && (datestr.charAt(i)!='-')) {" + "/n" +
    "      tmpd=tmpd+datestr.charAt(i);" + "/n" +
    "    }" + "/n" +
    "    if ((status==3) && (datestr.charAt(i)!=':') && (datestr.charAt(i)!=' ')) {" + "/n" +
    "      tmph=tmph+datestr.charAt(i);" + "/n" +
    "    }" + "/n" +
    "    if ((status==4) && (datestr.charAt(i)!=':')) {" + "/n" +
    "      tmpmi=tmpmi+datestr.charAt(i);" + "/n" +
    "    }" + "/n" +
    "  }" + "/n" +
    "  year=new String (tmpy);" + "/n" +
    "  month=new String (tmpm);" + "/n" +
    "  day=new String (tmpd);" + "/n" +
    "  hour=new String (tmph);" + "/n" +
    "  minute=new String (tmpmi);" + "/n" +
    "  if(tmpy=='' || tmpm=='' || tmpd=='' || tmph=='' || tmpmi=='') {" + "/n" +
    "    return 0;" + "/n" +
    "  }" + "/n" +
    "  if ((tmpy.length!=4) || (tmpm.length>2) || (tmpd.length>2)||(tmph.length>2)||(tmpmi.length>2)) {" + "/n" +
    "    return 0;" + "/n" +
    "  }" + "/n" +
    "  if (!((1<=month) && (12>=month) && (31>=day) && (1<=day) && (0<=hour) && (24>=hour) && (0<=minute) && (60>=minute)) ) {" + "/n" +
    "    return 0;" + "/n" +
    "  }" + "/n" +
    "  if (!((year % 4)==0) && (month==2) && (day==29)) {" + "/n" +
    "    return 0;" + "/n" +
    "  }" + "/n" +
    "  if ((month<=7) && ((month % 2)==0) && (day>=31)) {" + "/n" +
    "    return 0;" + "/n" +
    "  }" + "/n" +
    "  if ((month>=8) && ((month % 2)==1) && (day>=31)) {" + "/n" +
    "    return 0;" + "/n" +
    "  }" + "/n" +
    "  if ((month==2) && (day==30)) {" + "/n" +
    "    return 0;" + "/n" +
    "  }" + "/n" +
    "  return 1;" + "/n" +
    "}" + "/n/n"+

    "//检查日期1是否在日期2之前" + "/n" +
    "function chkdateorder(datestr1,datestr2) {" + "/n" +
    "  var lthdatestr1=/"/";" + "/n" +
    "  var lthdatestr2=/"/";" + "/n" +
    "  var vdatestr1=/"/";" + "/n" +
    "  var vdatestr2=/"/";" + "/n" +
    "  if (datestr1 != /"/" && datestr2 != /"/"){" + "/n" +
    "    vdatestr1=datestr1.replace(/-/i, /"//");" + "/n" +
    "    vdatestr2=datestr2.replace(/-/i, /"//");" + "/n" +
    "    lthdatestr1= Date.parse(vdatestr1) ;" + "/n" +
    "    lthdatestr2= Date.parse(vdatestr2) ;" + "/n" +
    "    if(lthdatestr1>lthdatestr2) return 0;" + "/n" +
    "    else return 1;" + "/n" +
    " }" + "/n" +
    "  else return 1;" + "/n" +
    "}" + "/n/n"+

    "//校验邮政编码" + "/n" +
    "function isPostalCode(s)" + "/n" +
    "{" + "/n" +
    "var patrn=/^[1-9]{1}(
//d){5}$/;"
+ "/n" +
    "if (!patrn.exec(s) && s!='') return 0;" + "/n" +
    "return 1;" + "/n" +
    "}" + "/n" +

    "// 检验手机号" + "/n" +
    "function isMobile(s)" + "/n" +
    "{" + "/n" +
    " var patrn=/^[0]?13//d[ ]?[-]?//d{8}$/;" + "/n" +
    " if (!patrn.exec(s) && s!='') return 0;" + "/n" +
    " return 1;" + "/n" +
    "}" + "/n"+

    "//检查是否为15位身份证号" + "/n" +
    "function CheckNum15(s)" + "/n" +
    "{" + "/n" +
    " var patrn = /^//d{15}$/;" + "/n" +
    " if (!patrn.exec(s) && s!='') return 0;" + "/n" +
    " return 1;" + "/n" +
    "}" + "/n" +

    "//检查是否为18位身份证号" + "/n" +
    "function CheckNum18(s)" + "/n" +
    "{" + "/n" +
    " var patrn = /^//d{17}(?://d|x)$/;" + "/n" +
    " if (!patrn.exec(s) && s!='') return 0;" + "/n" +
    " return 1;" + "/n" +
    "}" + "/n"+

    "//检查用户名:只能输入2-20个以字母开头、可带数字、“_”、“.”的字串" + "/n"+
    "function isRegisterUserName(s)" + "/n"+
    "{" + "/n"+
    " var patrn=/^[a-zA-Z]{1}([a-zA-Z0-9._]){1,19}$/;" + "/n"+
    " if (!patrn.exec(s) && s!='') return 0;" + "/n"+
    " return 1;" + "/n"+
    "}" + "/n"+

    "//校验普通电话、传真号码:可以“+”开头,除数字外,可含有“-”" + "/n"+
    "function iscommontel(s)" + "/n"+
    "{" + "/n"+
    " var patrn=/^[+]{0,1}(
//d){1,3}[
]?([-]?((
//d)|[
]){1,12})+$/;" + "/n"+
    " if (!patrn.exec(s) && s!='') return 0;" + "/n"+
    " return 1;" + "/n"+
    "}" + "/n"+

    "//校验密码:只能输入5-18个字母、数字" + "/n"+
    "function isPasswd(s)" + "/n"+
    "{" + "/n"+
    " var patrn=/^[a-zA-Z0-9]{5,18}$/;" + "/n"+
    " if (!patrn.exec(s) && s!='') return 0;" + "/n"+
    " return 1;" + "/n"+
    "}" + "/n"+

    "//检查是否为数字或字符" + "/n"+
    "function isNumorChar(s)" + "/n"+
    "{" + "/n"+
    " var patrn=/^[a-zA-Z0-9]+$/;" + "/n"+
    " if (!patrn.exec(s) && s!='') return 0;" + "/n"+
    " return 1;" + "/n"+
    "}" + "/n"+

    "//去除字符串两端空格" + "/n"+
    "String.prototype.trim = function() " + "/n"+
    "{ " + "/n"+
    "return this.replace(/(^//s*)|(
//s*$)/g,
/"/"); " + "/n"+
    "} " + "/n";
  }

  public static void main(String[] args) {
    ErrorCheck ec = new ErrorCheck();
    ec.setFormName("myForm");
    ec.dateCheckorderS("number1","number2","error");
    String script = ec.ErrorCheckScript();
    System.out.println(script);
  }

}

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