晕。javascript没有trim函数？

[WorldCreater]

晕。javascript没有trim函数？
好久没写这东西了，忘得厉害

<form id="scanInputForm" action="" method="post" onsubmit=''>
请输入：<input type="text" name="nsrsbh" value="35010219771124089601">
<button name="showAttachmentBtn" onclick='if(document.all.scanInputForm.nsrsbh.value==""){alert("请输入");exit();}
//////////////这里加上trim的话就没反应 trim(document.all.scanInputForm.nsrsbh.value)==""

document.all.scanInputForm.action="showallfjbynsrsbh.jsp";document.all.scanInputForm.submit()'>查看附件</button>
<button name="showScannerFormBtn" onclick='if(document.all.scanInputForm.nsrsbh.value==""){alert("请输入");exit();}document.all.scanInputForm.action="scanner.jsp";document.all.scanInputForm.submit()'>扫描输入</button>
</form>

[whnnet]

// Trim() , Ltrim() , RTrim() 函数
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, "");
}


使用：

x = " d "
alert(x.Trim())

[JasonJHu]

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, "");
}

[wenww]

function trim(strValue)
{
if(strValue==null || strValue.length == 0) return ("");
var cr=String.fromCharCode(13);
var oldstr="";

while (oldstr.length!=strValue.length)
{
oldstr = strValue;
strValue=b_trim(strValue," ");
strValue=b_trim(strValue,"　");
strValue=b_trim(strValue,cr);
}
return strValue;
}

[张佩]

ding

[笨笨兔兔兔兔兔]

whnnet(赚钱攒嫁妆)MM写的非常好…………

[WorldCreater]

trim函数还要自个写？

[AspNet2005]

String.prototype.trim() = function()
{
return this.replace(/(^\s*)|(\s*$)/g);
}