参考：
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>左右可拖动的内容显示区</title>
<link rel="stylesheet" href="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/css/bootstrap.min.css">
<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:skyblue;float:right}
#line{position:absolute;top:0;left:50%;height:100%;width:4px;overflow:hidden;background:red;cursor:w-resize;}
/*p { cursor: text; } !* css注释： 设置鼠标移动到html p对象时鼠标变为文本选择样式 *!*/
/*a { cursor: pointer; } !* css注释： 设置鼠标移动到a超链接对象时鼠标变为手指形状（链接选择） *!*/
/*body { cursor: url("小图片地址")} !* 设置鼠标指针默认为一个小图片 *!*/
</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宽度<span id="msg"></span></center>
<div id="box">
<div id="top">
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</div>
<div id="bottom">
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</div>
<div id="line"></div>
</div>
</body>
</html>
时间： 2024-10-11 12:35:36