本文实例讲述了jQuery实现右下角可缩放大小的层。分享给大家供大家参考，具体如下：
<Meta http-equiv="Content-Type" content="text/html; charset=utf-8">
大小可缩放层测试@H_<a href="/tag/404/" target="_blank" class="keywords">404</a>_5@
<script type = "text/javascript" src="jquery-1.7.2.js"></script>
<style type = "text/css">
#fa{
border:1px solid blue;
overflow:auto;
width:400px;
height:400px;
}
#main{
margin:0;
padding:0;
width:300px;
height:280px;
border:1px solid red;
}
</style>
<script type = "text/javascript">
$(function(){
var div = getObj("main");
div.onmousemove = function(e){
var e = e || window.event;
var posx = e.clientX;
var posy = e.clientY;
var l = div.offsetLeft;
var t = div.offsetTop;
var h = div.clientHeight;
var w = div.clientWidth;
var ol = l+w-10;
var or = l+w+10;
var ot = t+h-10;
var ob = t+h+10;
this.style.cursor = "";
if(posx>ol && posx<or && posy >ot && posy<ob){
div.style.cursor = "nw-resize";
}
}
div.onmousedown = function(e){
var e = e || window.event;
var initX = e.clientX;
var initY = e.clientY;
var l = div.offsetLeft;
var t = div.offsetTop;
var h = div.clientHeight;
var w = div.clientWidth;
var ol = l+w-10;
var or = l+w+10;
var ot = t+h-10;
var ob = t+h+10;
if(initX>ol && initX<or && initY >ot && initY<ob){
document.onmousemove = function(evt){
var e = evt || window.event;
var currX = e.clientX;
var currY = e.clientY;
div.style.width = w + (currX - initX)+"px";
div.style.height = h+(currY-initY)+"px";
}
document.onmouseup = function(){
document.onmousemove = null;
document.onmouseup = null;
}
}
}
});
function getObj(id){
return document.getElementById(id);
}
</script>
</head>
<body>
<div id = "fa">
<div id = "main"></div>
</div>
</body>
</html>
</pre>
</div>
<p><a href="/tag/hanshu/" target="_blank" class="keywords">函数</a>封装后：</p>
<div class="jb51code">
<pre class="brush:js;">
function resize(div){
div.mousemove(function(e){
var e = e || window.event;
var posx = e.clientX;
var posy = e.clientY;
var l = div.offset().left;
var t = div.offset().top;
var h = div.height();
var w = div.width();
var ol = l+w-10;
var or = l+w+10;
var ot = t+h-10;
var ob = t+h+10;
$(this).css("cursor","");
if(posx>ol && posx<or && posy >ot && posy<ob){
$(this).css("cursor","nw-resize");
}
});
div.mousedown(function(e){
var e = e || window.event;
var posx = e.clientX;
var posy = e.clientY;
var l = div.offset().left;
var t = div.offset().top;
var h = div.height();
var w = div.width();
var ol = l+w-10;
var or = l+w+10;
var ot = t+h-10;
var ob = t+h+10;
if(posx>=ol && posx<=or && posy >=ot && posy<=ob){
document.onmousemove = function(e){
var e = e || window.event;
var currX = e.clientX;
var currY = e.clientY;
div.width(w + (currX - posx));
div.height(h+(currY-posy));
}
$(document).mouseup(function(){
document.onmousemove = null;
});
}
});
}
</pre>
</div>
<p>更多关于jQuery相关<a href="/tag/neirong/" target="_blank" class="keywords">内容</a>感兴趣的读者可查看本站专题：《<a target="_blank" href="//www.jb51.cc/Special/539.htm">jQuery表格(table)操作技巧汇总</a>》、《<a target="_blank" href="//www.jb51.cc/Special/200.htm">jQuery常用插件及用法总结</a>》、《<a target="_blank" href="//www.jb51.cc/Special/93.htm">jquery中Ajax用法总结</a>》、《<a target="_blank" href="//www.jb51.cc/Special/497.htm">jQuery拖拽特效与技巧总结</a>》、《<a target="_blank" href="//www.jb51.cc/Special/451.htm">jQuery扩展技巧总结</a>》、《<a target="_blank" href="//www.jb51.cc/Special/430.htm">jQuery常见经典特效汇总</a>》、《<a target="_blank" href="//www.jb51.cc/Special/104.htm">jQuery动画与特效用法总结</a>》及《<a target="_blank" href="//www.jb51.cc/Special/75.htm">jquery选择器用法总结</a>》</p>
<p>希望本文所述对大家jQuery程序设计有所帮助。</p></div>
<div class="topcard-tags"><a href="/tag/jQuery/" class="tag_link" target="_blank">jQuery</a><a href="/tag/kesuofangdaxiao/" class="tag_link" target="_blank">可缩放大小</a><a href="/tag/youxiajiao/" class="tag_link" target="_blank">右下角</a><a href="/tag/ceng/" class="tag_link" target="_blank">层</a><a href="/tag/cengp/" class="tag_link" target="_blank">层</a></div>
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