<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> <style type="text/css"> <!-- BODY { font-family:"Courier"; font-size: 12px; margin:0px 0px 0px 0px; overflow-x:no; overflow-y:no; background-color: #B8D3F4; } td { font-size:12px; } .default_input { border:1px solid #666666; height:18px; font-size:12px; } .default_input2 { border:1px solid #666666; height:18px; font-size:12px; } .nowrite_input { border:1px solid #849EB5; height:18px; font-size:12px; background-color:#EBEAE7; color: #9E9A9E; } .default_list { font-size:12px; border:1px solid #849EB5; } .default_textarea { font-size:12px; border:1px solid #849EB5; } .nowrite_textarea { border:1px solid #849EB5; font-size:12px; background-color:#EBEAE7; color: #9E9A9E; } .wordtd5 { font-size: 12px; text-align: center; vertical-align:top; padding-top: 6px; padding-right: 5px; padding-bottom: 3px; padding-left: 5px; background-color: #b8c4f4; } .wordtd { font-size: 12px; text-align: left; vertical-align:top; padding-top: 6px; padding-right: 5px; padding-bottom: 3px; padding-left: 5px; background-color: #b8c4f4; } .wordtd_1 { font-size: 12px; vertical-align:top; padding-top: 6px; padding-right: 5px; padding-bottom: 3px; padding-left: 5px; background-color: #516CD6; color:#fff; } .wordtd_2{ font-size: 12px; text-align: right; vertical-align:top; padding-top: 6px; padding-right: 5px; padding-bottom: 3px; padding-left: 5px; background-color: #64BDF9; } .wordtd_3{ font-size: 12px; text-align: right; vertical-align:top; padding-top: 6px; padding-right: 5px; padding-bottom: 3px; padding-left: 5px; background-color: #F1DD34; } .inputtd { font-size:12px; vertical-align:top; padding-top: 3px; padding-right: 3px; padding-bottom: 3px; padding-left: 3px; } .inputtd2 { text-align: center; font-size:12px; vertical-align:top; padding-top: 3px; padding-right: 3px; padding-bottom: 3px; padding-left: 3px; } .tablebg { font-size:12px; } .tb{ border-collapse: collapse; border: 1px outset #999999; background-color: #FFFFFF; } .td2{line-height:22px; text-align:center; background-color:#F6F6F6;} .td3{background-color:#B8D3F4; text-align:center; line-height:20px;} .td4{background-color:#F6F6F6;line-height:20px;} .td5{border:#000000 solid; border-right-width:0px; border-left-width:0px; border-top-width:0px; border-bottom-width:1px;} .tb td{ font-size: 12px; border: 2px groove #ffffff; } .noborder { border: none; } .button { border: 1px ridge #ffffff; line-height:18px; height: 20px; width: 45px; padding-top: 0px; background:#CBDAF7; color:#000000; font-size: 9pt; font-family:"Courier"; } .textarea { font-family: Arial, Helvetica, sans-serif, "??"; font-size: 9pt; color: #000000; border-bottom-width: 1px; border-top-style: none; border-right-style: none; border-bottom-style: solid; border-left-style: none; border-bottom-color: #000000; background-color:transparent; text-align: left } --> </style></head> <body> <div style="border:1px dashed #E6E6E6;margin:150px 0px 0px 450px; width:350px; height:200px; background-color:#E6E6E6;"> <table width="285" height="169" border="0" align="left" cellpadding="0" cellspacing="0" style="margin:15px 0px 0px 15px;"> <tr> <td width="126"> <!--multiple="multiple" 能同时选择多个 size="10" 确定下拉选的长度--> <select name="first" size="10" multiple="multiple" class="td3" id="first"> <option value="选项1">选项1</option> <option value="选项2">选项2</option> <option value="选项3">选项3</option> <option value="选项4">选项4</option> <option value="选项5">选项5</option> <option value="选项6">选项6</option> <option value="选项7">选项7</option> <option value="选项8">选项8</option> </select> </td> <td width="69" valign="middle"> <input name="add" id="add" type="button" class="button" value="-->" /> <input name="add_all" id="add_all" type="button" class="button" value="==>" /> <input name="remove" id="remove" type="button" class="button" value="<--" /> <input name="remove_all" id="remove_all" type="button" class="button" value="<==" /> </td> <td width="127" align="left"> <select name="second" size="10" multiple="multiple" class="td3" id="second"> <option value="选项9">选项9</option> </select> </td> </tr> </table> </div> </body> <script type="text/javascript"> window.onload=function(){ /********************************************************************************************************************/ //选中的从左边移植到右边 //<input name="add" id="add" type="button" class="button" value="-->" /> document.getElementById("add").onclick=function(){ //<select name="first" size="10" multiple="multiple" class="td3" id="first"> var firstElement=document.getElementById("first"); //获取 <select name="second" size="10" multiple="multiple" class="td3" id="second"> var selectElement=document.getElementById("second"); //获取id=first下所有的option元素 var firstOptionElements=firstElement.getElementsByTagName("option"); var len=firstOptionElements.length; //alert("len "+len); /* * * selectedIndex:该下标返回下拉列表中选中的索引值,没有被选中时,该值为-1 * * javaScrip的下拉选的索引从0开始 * * selectedIndex 查找索引值的时候,从0开始,如果0位置的元素不被移除,那么selectedIndex值永远是0 * * javaScrip中的数组时动态数组,数组的长度是可变的 */ for(var i=0;i<len;i++){ //获取选中的索引值 var index=firstElement.selectedIndex; // alert(index); if(index!=-1){ //从左边---右边 selectElement.appendChild(firstOptionElements[index]); } } } /********************************************************************************************************************/ //全部的从左端移动到右端 // <input name="add_all" id="add_all" type="button" class="button" value="==>" /> document.getElementById("add_all").onclick=function(){ //<select name="first" size="10" multiple="multiple" class="td3" id="first"> var firstElement=document.getElementById("first"); //获取 <select name="second" size="10" multiple="multiple" class="td3" id="second"> var selectElement=document.getElementById("second"); //获取id=first下所有的option元素 var firstOptionElements=firstElement.getElementsByTagName("option"); var len=firstOptionElements.length; for(var i=0;i<len;i++){ selectElement.appendChild(firstOptionElements[0]); } } /********************************************************************************************************************/ //双击的从左端移到右端 //方法一 // var firstElement=document.getElementById("first"); // firstElement.ondblclick=function(){ // // //获取 <select name="second" size="10" multiple="multiple" class="td3" id="second"> // var selectElement=document.getElementById("second"); // // //获取id=first下所有的option元素 // var firstOptionElements=this.getElementsByTagName("option"); // var len=firstOptionElements.length; // // for(var i=0;i<len;i++){ // //获取选中的索引值 // var index=this.selectedIndex; // // alert(index); // if(index!=-1){ // //从左边---右边 // selectElement.appendChild(firstOptionElements[index]); // } // } // } //方法二: document.getElementById("first").ondblclick=function(){ //alert(this.length); //获取右端的下拉选 var selectElement=document.getElementById("second"); /* * this.selectedIndex ==左端被选中的索引值 * this[this.selectedIndex]:id=first的元素也是一个数组 */ selectElement.appendChild(this[this.selectedIndex]); } } </script> </html>