javascript 的trim 函数在firefox 下面使用没有问题
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<script language= "javascript" >
var test1 = " aa " ;
test1 = test1.toString();
test1 = test1.trim();
</script>
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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
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String.prototype.trim= function (){ return this .replace(/(^\s*)|(\s*$)/g, "" );}
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在头上加上这一句,上面的就可以在IE和FF下都可以运行了
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<script language= "javascript" >
String.prototype.trim= function (){ return this .replace(/(^\s*)|(\s*$)/g, "" );}
var test1 = " aa " ;
test1 = test1.toString();
test1 = test1.trim();
</script>
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JQuery提供的方法:
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<!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>
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