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半旧ad 2015-07-02 09:51:38

<body>
<div id="ph" style="position:absolute;top:0px;left:0px;z-index:3;">
<img src="float.gif" />
</div>
<script>
var m = document.getElementById("ph");
var x = 0;
var y = 0;

var xs = 10;
var ys = 10;

setInterval(function() {
x += xs;
y += ys;

m.style.left = x;
m.style.top = y;

},100);

</script>
</body>

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hch126163 2015-07-05

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m.style.left = x+"px"; m.style.top = y+"px";

你好，编程！ 2015-07-05

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奥，要加px

香蕉猪 2015-07-03

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代码没问题。。。若楼主是想要实现循环从页面飘过，，，楼主的思路有问题。。。可以改用css3动画实现。。。。

纯洁袜子 2015-07-03

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引用 2 楼 zyb112211 的回复:

<script>
var m = document.getElementById("ph");
var x = 0;
var y = 0;
var xs = 10;
var ys = 10;

setInterval(function() {
x += xs;
y += ys;

m.style.left = x+"px";
m.style.top = y+"px";
},100);

</script>
</body>

要加“px”

<script>
var m = document.getElementById("ph");
var x = 0;
var y = 0;
var xs = 10;
var ys = 10;

setInterval(function() {
x += xs;
y += ys;

m.style.left = x+"px";
m.style.top = y+"px";
},100);

</script>
</body>

纯洁袜子 2015-07-03

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<script>
var m = document.getElementById("ph");
var x = 0;
var y = 0;
var xs = 10;
var ys = 10;

setInterval(function() {
x += xs;
y += ys;

m.style.left = x+"px";
m.style.top = y+"px";
},100);

</script>
</body>

要加“px”