有什么方法可以去掉字符串左右两边的空格？？？？？

[rywln]

请指教？

[X25]

str=str.replace(/(^\s*)|(\s*$)/g, "");

[flyxing]

function trim(value){
var res = String(value).replace(/^[\s]+|[\s]+$/g,'');
return res;
}

[zhiwen_huang]

自己来定义Trim LRrim RTrim
<script language=javascript>
String.prototype.Trim = function(){return this.replace(/(^\s*)|(\s*$)/g, "");}
String.prototype.LTrim = function(){return this.replace(/(^\s*)/g, "");}
String.prototype.RTrim = function(){return this.replace(/(\s*$)/g, "");}
var s = " leading and trailing spaces ";
window.alert(s + " (" + s.length + ")");
s = s.Trim();
window.alert(s + " (" + s.length + ")");
</script>

[zhiwen_huang]

http://www.csdn.net/expert/topic/806/806410.xml?temp=.3242456

[zhiwen_huang]

自己写一个
function LTrim(tempString){
while (tempString.charAt(0) == ' ') {
tempString= tempString.substring(1,tempString.length);
}
return tempString;
}
function RTrim(tempString){
while (tempString.charAt(tempString.length - 1) == ' ') {
tempString= tempString.substring(0,tempString.length - 1);
}
return tempString;
}