問一下這個錯在哪？麻煩大神看下
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
#div1{
width:200px;
height:200px;
border:2px solid red;
position:absolute;
left:0px;
top:0px;
}
</style>
<script type="text/javascript">
function startqwe(){
var qwe=document.getElementById('div1');
function moveqwe(){
qwe.style.left=qwe.style.offsetLeft+10+'px';
}
setInterval(moveqwe(),30);
}
</script>
</head>
<body>
<div id="div1"></div>
<input type="button" value="點擊開始運動" onclick="startqwe()" />
</body>
</html>
2017-03-28
#div1{ width:200px; height:200px; border:2px?solid?red; position:absolute; left:0px; top:0px; } 加個z-index:-1； qwe.style.left=qwe.style.offsetLeft+10+'px'; 改成 qwe.style.left=qwe.offsetLeft+10+'px';2017-03-28
<script type="text/javascript">
function startqwe(){
var qwe=document.getElementById('div1');
qwe.style.left=qwe.offsetLeft+10+'px';
alert(qwe.style.left);
setInterval(startqwe,100);
//此處不能寫startqwe();
}
</script>