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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <meta name="viewport" content="width=device-width, initial-scale=1.0">
- <title>Document</title>
- </head>
- <body>
- <a href="http://www.baidu.com">点击</a>
- <script>
- var a = document.querySelector("a");
- a.onclick = function(event) {
- alert("你好")
- // event.preventDefault();
- // IE老版本
- event.returnValue = false;
- }
- </script>
- </body>
- </html>
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