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jquery控制元素位置方法

2012-03-08 18:05 239 查看 
<html>
<head>
<script type="text/javascript" src="/jquery/jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("button").click(function(){
x=$("p").position();
alert("Left position: " + x.left + " Top position: " + x.top);
});
});
</script>
</head>
<body><br>
<p>     This is a paragraph.</p>
<button>获得 p 元素的位置坐标</button>
</body>
</html>

<html>
<head>
<script type="text/javascript" src="/jquery/jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$(".btn1").click(function(){
$("p").height("23px");
$("p").width("176px");
$("span").text($("p").height()+"---"+$("p").width());
});
});
</script>
</head>
<body>
<p>本段落的高度是 <span>unknown</span> px。</p>
<button class="btn1">获得高度</button>
</body>
</html>

<html>
<head>
<script type="text/javascript" src="/jquery/jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("button").click(function(){
x=$("p").offset();
$("#span1").text(x.left);
$("#span2").text(x.top);
});
});
</script>
</head>
<body>
<p>本段落的偏移是 <span id="span1">unknown</span> left 和 <span id="span2">unknown</span> top。</p>
<button>获得 offset</button>
</body>
</html>

<html>
<head>
<script type="text/javascript" src="/jquery/jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("button").click(function(){
$("p").offset(function(n,c){
newPos=new Object();
newPos.left=c.left+100;
newPos.top=c.top+100;
return newPos;
});
});
});
</script>
</head>
<body>
<p>这是一个段落。</p>
<button>设置 p 元素的 offset 坐标</button>
</body>
</html>

<html>
<head>
<script type="text/javascript" src="/jquery/jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("button").click(function(){

var ll=$("p").offset().left;
var tt=$("p").offset().top;
newPos22=new Object();
newPos22.left=ll+150;
newPos22.top=tt+150;

$("p").offset(newPos22);
});
});
</script>
</head>
<body>
<p>这是一个段落。</p>
<button>设置 p 元素的 offset 坐标</button>
</body>
</html>

<html>
<head>
<script type="text/javascript" src="/jquery/jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("button").click(function(){
$("div").scrollLeft(100);
});
});
</script>
</head>
<body>
<div style="border:1px solid black;width:100px;height:130px;overflow:auto">
The longest word in the english dictionary is: pneumonoultramicroscopicsilicovolcanoconiosis.
</div>
<button class="btn1">把滚动条的水平位置设置为 100px</button>
</body>
</html>

<html>
<head>
<script type="text/javascript" src="/jquery/jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$(".btn1").click(function(){
$("div").scrollTop(100);
});
$(".btn2").click(function(){
alert($("div").scrollTop()+" px");
});
});
</script>
</head>
<body>
<div style="border:1px solid black;width:200px;height:200px;overflow:auto">
This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text. This is some text.
</div>
<button class="btn1">把 scroll top offset 设置为 100px</button>
<br />
<button class="btn2">获得 scroll top offset</button>
</body>
</html>
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