- <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
- <html>
- <head>
- <title>test</title>
- <script type="text/javascript">
- String.prototype.trim = function()
- {
- return this.replace(/(^s*)|(s*$)/g, "");
- }
- function check(){
- var str = document.getElementById("test").value;
- alert(str.trim());
- }
- </script>
- </head>
- <body>
- <center>
- <input id="test" type="text" />
- <input id="but" type="button" value="检验" onclick="check();"/>
- </center>
- </body>
- </html>