event.preventDefault()和jQuery中的false返回有什么区别？
从jQuery事件处理程序返回false就像调用preventDefault()和stopPropagation()。该preventDefault()方法可防止浏览器执行默认操作。
示例
您可以尝试运行以下代码以在jQuery中运行event.preventDefault()方法-
<html>
<head>
<title>jQuery preventDefault() method</title>
<script src = "https://cdn.staticfile.org/jquery/2.1.3/jquery.min.js"></script>
<script>
$(document).ready(function() {
$("a").click(function(event){
event.preventDefault();
alert( "默认行为已禁用！" );
});
});
</script>
</head>
<body>
<span>Click the following link and it won't work:</span>
<a href = "https://www.google.com">GOOGLE Inc.</a>
</body>
</html>示例
您可以尝试运行以下代码以从jQuery事件处理程序返回false：
<html>
<head>
<title>jQuery return false</title>
<script src = "https://cdn.staticfile.org/jquery/2.1.3/jquery.min.js"></script>
<script>
$(document).ready(function() {
$("a").click(function(event){
alert( "默认行为已禁用！" );
return false;
});
});
</script>
</head>
<body>
<span>Click the following link and it won't work:</span>
<a href = "https://www.google.com">GOOGLE Inc.</a>
</body>
</html>