javascript 的trim 函数在firefox 下面使用没有问题
- <script language="javascript">
- var test1 = " aa ";
- test1 = test1.toString();
- test1 = test1.trim();
- </script>
在火狐下这样用没有问题, 但是在IE下就报错
那么我们可以修改一下
- String.prototype.trim=function(){return this.replace(/(^s*)|(s*$)/g,"");}
在头上加上这一句,上面的就可以在IE和FF下都可以运行了
- <script language="javascript">
- String.prototype.trim=function(){return this.replace(/(^s*)|(s*$)/g,"");}
- var test1 = " aa ";
- test1 = test1.toString();
- test1 = test1.trim();
- </script>
JQuery提供的方法:
- <!DOCTYPE html>
- <html>
- <head>
- <script src="http://code.jquery.com/jquery-latest.js"></script>
- </head>
- <body>
- <button>Show Trim Example</button>
- <script>
- $("button").click(function () {
- var str = " lots of spaces before and after ";
- alert("'" + str + "'");
- str = jQuery.trim(str);
- alert("'" + str + "' - no longer");
- });
- </script>
- </body>
- </html>