我的跟老师写的一样,但是没有变大的效果,怎么回事?
好雪君
2015-10-27 20:27
<style>
* { margin:0px; padding:0px;}
.top { width:200px; overflow:hidden; float:left;}
.top ul {width:200px; overflow:hidden; float:left; }
.top ul li { width:200px; height:100px; background:#ffd800; float:left; margin-bottom:20px;}
</style>
<script>
window.onload = function () {
var count = document.getElementsByTagName("li");
for (var i = 0; i < count.length; i++) {
count[i].onmouseover = function () {
startMove(this, 400);
}
count[i].onmouseout = function () {
startMove(this, 200);
}
}
}
var time = null;
function startMove(obj, end) {
clearInterval(time);
time = setInterval(function () {
var speed = (end - obj.offsetWidth) / 8;
speed = speed > 0 ? Math.ceil(speed) : Math.floor(speed);
if (obj.offsetWidth == end) {
clearInterval(time);
} else {
obj.style.width = obj.offsetWidth + speed + 'px';
}
}, 30)
}
</script>
<body>
<div class="top" id="top">
<ul>
<li></li>
<li></li>
<li></li>
</ul>
</div>
哪位小伙伴能帮我看看,非常感谢
3回答
-
- Aurora丶
- 2015-10-31 10:06:01
这个代码的完整答案是这样的
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>demo</title> <style type="text/css"> *{margin: 0;padding: 0;} ul{list-style-type: none;} ul li{width: 200px;height: 100px;background: yellow;margin-bottom: 20px;} </style> <script type="text/javascript"> window.onload = function(){ var oLi = document.getElementsByTagName('li'); for(var i = 0 ; i < oLi.length ; i++){ oLi[i].timer = null; oLi[i].onmouseover = function(){ starMove(this,400); } oLi[i].onmouseout = function(){ starMove(this,200); } } } function starMove(obj,iTarget){ clearInterval(obj.timer); obj.timer = setInterval(function(){ var speed = (iTarget - obj.offsetWidth)/5; speed=speed>0 ? Math.ceil(speed):Math.floor(speed); if (obj.offsetWidth == iTarget) { clearInterval(obj.timer); }else{ obj.style.width = obj.offsetWidth + speed + "px"; } },30) } </script> </head> <body> <ul> <li></li> <li></li> <li></li> </ul> </body> </html> -
- 好雪君
- 2015-11-02 17:58:23
非常感谢！我写的时候div定死了宽度,所以li就不会变大
-
- Aurora丶
- 2015-10-31 09:55:50
代码测试了完全没有问题阿
JS动画效果
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