MOUSEOVER MOUSEENTER
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<html>
<head>
<script type="text/javascript" src="/jquery/jquery.js"></script>
<script type="text/javascript">
x=0;
y=0;
$(document).ready(function(){
$("div.over").mouseover(function(){
$(".over span").text(x+=1);
});
$("div.enter").mouseenter(function(){
$(".enter span").text(y+=1);
});
});
</script>
</head>
<body>
<p>不论鼠标指针穿过被选元素或其子元素，都会触发 mouseover 事件。</p>
<p>只有在鼠标指针穿过被选元素时，才会触发 mouseenter 事件。</p>
<div class="over" style="background-color:lightgray;padding:20px;width:40%;float:left">
<h2 style="background-color:white;">被触发的 Mouseover 事件：<span></span></h2>
</div>
<div class="enter" style="background-color:lightgray;padding:20px;width:40%;float:right">
<h2 style="background-color:white;">被触发的 Mouseenter 事件：<span></span></h2>
</div>
</body>
<head>
<script type="text/javascript" src="/jquery/jquery.js"></script>
<script type="text/javascript">
x=0;
y=0;
$(document).ready(function(){
$("div.over").mouseover(function(){
$(".over span").text(x+=1);
});
$("div.enter").mouseenter(function(){
$(".enter span").text(y+=1);
});
});
</script>
</head>
<body>
<p>不论鼠标指针穿过被选元素或其子元素，都会触发 mouseover 事件。</p>
<p>只有在鼠标指针穿过被选元素时，才会触发 mouseenter 事件。</p>
<div class="over" style="background-color:lightgray;padding:20px;width:40%;float:left">
<h2 style="background-color:white;">被触发的 Mouseover 事件：<span></span></h2>
</div>
<div class="enter" style="background-color:lightgray;padding:20px;width:40%;float:right">
<h2 style="background-color:white;">被触发的 Mouseenter 事件：<span></span></h2>
</div>
</body>
</html>
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