效果图如下：
源码如下：
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>例子</title>
<style>
ul,li{margin:0;padding:0;}
body{font:14px/1.5 Arial;color:#666;}
#box{position:relative;width:600px;height:400px;border:2px solid #000;margin:10px auto;overflow:hidden;}
#box ul{list-style-position:inside;margin:10px;}
#top,#bottom{color:#FFF;width:300px;height:400px;overflow:hidden;}
#top{background:green; float:left}
#bottom{background:blue;float:right}
#line{position:absolute;top:0;left:50%;height:100%;width:4px;overflow:hidden;background:red;cursor:w-resize;}
</style>
<script>
function $(id) {
return document.getElementById(id)
}
window.onload = function() {
var oBox = $("box"), oTop = $("top"), oBottom = $("bottom"), oLine = $("line");
oLine.onmousedown = function(e) {
var disX = (e || event).clientX;
oLine.left = oLine.offsetLeft;
document.onmousemove = function(e) {
var iT = oLine.left + ((e || event).clientX - disX);
var e=e||window.event,tarnameb=e.target||e.srcElement;
var maxT = oBox.clientWight - oLine.offsetWidth;
oLine.style.margin = 0;
iT < 0 && (iT = 0);
iT > maxT && (iT = maxT);
oLine.style.left = oTop.style.width = iT + "px";
oBottom.style.width = oBox.clientWidth - iT + "px";
$("msg").innerText='top.width:'+oLine.style.width+'---bottom.width:'+oBottom.style.width+'---oLine.offsetLeft:'+oLine.offsetLeft+'---disX:'+disX+'---tarnameb:'+tarnameb.tagName;
return false
};
document.onmouseup = function() {
document.onmousemove = null;
document.onmouseup = null;
oLine.releaseCapture && oLine.releaseCapture()
};
oLine.setCapture && oLine.setCapture();
return false
};
};
</script>
</head>
<body>
<center>左右拖动红条改变显示区域高度<span id="msg"></span></center>
<div id="box">
<div id="top">
<ul>
<li>西安一大厦发生爆炸7人遇难31人受伤</li>
<li>意大利经济学家蒙蒂出任过渡政府总理</li>
<li>天宫神八今晚分离后再对接 全程需半小时</li>
<li>吉林骗子承包厨子施工铁路桥墩将爆破拆除</li>
<li>胡锦涛：人民币升值无法解决美国问题</li>
<li>红会否认通过民政部门索捐 称按工龄捐款属谣言</li>
<li>昆明警车拒绝救助临产孕妇 市民称警察当时在玩游戏</li>
<li>网帖称贫困县人社局80名员工公款赴港澳旅游</li>
</ul>
</div>
<div id="bottom">
<ul>
<li>京沪高铁因质量问题被召回动车拟16日恢复运营</li>
<li>黑龙江穆棱河污染致数万人饮水难近10年</li>
<li>湖南政府采购买高不买低 琴行老板揭招标内幕</li>
<li>云南师宗矿难副矿长承认用煤灰抹脸假装逃生</li>
<li>中介操控卵子黑市 北大清华女生卖卵可得数万元</li>
<li>云南一村庄户籍"不存在" 村民身份不明四处碰壁</li>
<li>河北燕郊数千人陷传销 称发展下线可获利百万</li>
<li>国际原子能机构出示图片证明伊朗研发核武器</li>
</ul>
</div>
<div id="line"></div>
</div>
</body>
</html>
效果图如下：
源码如下：
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>例子</title>
<style>
ul,li{margin:0;padding:0;}
body{font:14px/1.5 Arial;color:#666;}
#box{position:relative;width:600px;height:400px;border:2px solid #000;margin:10px auto;overflow:hidden;}
#box ul{list-style-position:inside;margin:10px;}
#top,#bottom{color:#FFF;height:200px;overflow:hidden;}
#top{background:green;}
#bottom{background:blue;}
#line{position:absolute;top:50%;width:100%;height:4px;overflow:hidden;margin-top:-2px;background:red;cursor:n-resize;}
</style>
<script>
function $(id) {
return document.getElementById(id)
}
window.onload = function() {
var oBox = $("box"), oTop = $("top"), oBottom = $("bottom"), oLine = $("line");
oLine.onmousedown = function(e) {
var disY = (e || event).clientY;
oLine.top = oLine.offsetTop;
document.onmousemove = function(e) {
var iT = oLine.top + ((e || event).clientY - disY);
var maxT = oBox.clientHeight - oLine.offsetHeight;
oLine.style.margin = 0;
iT < 0 && (iT = 0);
iT > maxT && (iT = maxT);
oLine.style.top = oTop.style.height = iT + "px";
oBottom.style.height = oBox.clientHeight - iT + "px";
return false
};
document.onmouseup = function() {
document.onmousemove = null;
document.onmouseup = null;
oLine.releaseCapture && oLine.releaseCapture()
};
oLine.setCapture && oLine.setCapture();
return false
};
};
</script>
</head>
<body>
<center>上下拖动红条改变显示区域高度</center>
<div id="box">
<div id="top">
<ul>
<li>西安一大厦发生爆炸7人遇难31人受伤</li>
<li>意大利经济学家蒙蒂出任过渡政府总理</li>
<li>天宫神八今晚分离后再对接 全程需半小时</li>
<li>吉林骗子承包厨子施工铁路桥墩将爆破拆除</li>
<li>胡锦涛：人民币升值无法解决美国问题</li>
<li>红会否认通过民政部门索捐 称按工龄捐款属谣言</li>
<li>昆明警车拒绝救助临产孕妇 市民称警察当时在玩游戏</li>
<li>网帖称贫困县人社局80名员工公款赴港澳旅游</li>
</ul>
</div>
<div id="bottom">
<ul>
<li>京沪高铁因质量问题被召回动车拟16日恢复运营</li>
<li>黑龙江穆棱河污染致数万人饮水难近10年</li>
<li>湖南政府采购买高不买低 琴行老板揭招标内幕</li>
<li>云南师宗矿难副矿长承认用煤灰抹脸假装逃生</li>
<li>中介操控卵子黑市 北大清华女生卖卵可得数万元</li>
<li>云南一村庄户籍"不存在" 村民身份不明四处碰壁</li>
<li>河北燕郊数千人陷传销 称发展下线可获利百万</li>
<li>国际原子能机构出示图片证明伊朗研发核武器</li>
</ul>
</div>
<div id="line"></div>
</div>
</body>
</html>