<span style="font-size:14px;"><!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>测试return false的作用</title>
<script src="../Scripts/jquery.js"></script>
<script>
$(document).ready(function () {
$("#box").on("click", ".btn", function (event) {
$(".text").toggle();
<span style="color:#ff0000;">event.preventDefault();</span>
<span style="color:#3333ff;">//这里是用来阻止<a>标签的默认打开链接事件,要是不加这句,默认打开链接,当href=""时,刷新当前页
//用return false也可以,但不规范,因为return只是结束的事件的冒泡,相当于event.stopPropagation()</span>
});
});
</script>
</head>
<body>
<div id="box">
<p class="text">这是一段话</p>
<a href="" class="btn">我不是链接</a>
</div>
</body>
</html></span>