<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>阻止事件冒泡</title>
</head>
<body>
<div>
<p>
<span>点我</span>
</p>
</div>
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$("span").click(function (e) {
alert("span");
e.stopPropagation();
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alert("p");
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alert("div");
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