jQuery中event.preventDefault()和return false有什么区别?
从 jQuery 事件处理程序中返回 false 就像同时调用 preventDefault() 和 stopPropagation()。preventDefault() 方法可防止浏览器执行默认操作。
示例
你可以尝试运行以下代码在 jQuery 中运行 event.preventDefault() 方法 −
<html> <head> <title>jQuery preventDefault() method</title> <script src = "https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script> <script> $(document).ready(function() { $("a").click(function(event){ event.preventDefault(); alert( "Default behavior is disabled!" ); }); }); </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
你可以尝试运行以下代码从 jQuery 事件处理程序中返回 false −
<html> <head> <title>jQuery return false</title> <script src = "https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script> <script> $(document).ready(function() { $("a").click(function(event){ alert( "Default behavior is disabled!" ); 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>
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