怎样去掉字符串两边的空格?

[lichunloverit]

我有一个字符串，左右两边可能含有空格，怎样去掉?

[dfyuening]

aa=Replace(aa," ","")

[zltostem]

其实还有简单的：

a=" dfldf "
a=Trim(a)

呵呵 ...

[191301587]

// -----------------------------------------------------------------------------------
//1本函数用于对sString字符串进行前空格截除
// -----------------------------------------------------------------------------------
function JHshLTrim(sString)
{
var sStr,i,iStart,sResult = "";

sStr = sString.split("");
iStart = -1 ;
for (i = 0 ; i < sStr.length ; i++)
{
if (sStr[i] != " ")
{
iStart = i;
break;
}
}
if (iStart == -1) { return "" ;} //表示sString中的所有字符均是空格,则返回空串
else { return sString.substring(iStart) ;}
}


// -----------------------------------------------------------------------------------
//2 本函数用于对sString字符串进行后空格截除
// -----------------------------------------------------------------------------------
function JHshRTrim(sString)
{
var sStr,i,sResult = "",sTemp = "" ;

// if (sString.length == 0) { return "" ;} // 参数sString是空串

sStr = sString.split("");
for (i = sStr.length - 1 ; i >= 0 ; i --) // 将字符串进行倒序
{
sResult = sResult + sStr[i];
}
sTemp = JHshLTrim(sResult) ; // 进行字符串前空格截除

if (sTemp == "") { return "" ; }

sStr = sTemp.split("");
sResult = "" ;
for (i = sStr.length - 1 ; i >= 0 ; i--) // 将经处理后的字符串再进行倒序
{
sResult = sResult + sStr[i];
}
return sResult ;
}
// -----------------------------------------------------------------------------------
//3本函数用于对sString字符串进行前后空格截除
//
function JHshTrim(sString)
{
var strTmp ;

strTmp = JHshRTrim(JHshLTrim(sString)) ;

return strTmp ;
}

[bearoom]

trim(string s)

[jnnxwjh]

以上各层讨论的是客户端的实现,我补充一下服务器端(vbscript>的实现
<%
newStr=trim(oldStr)
%>

[gaochao79]

高人真多哦

[wangxiaomax]

function trim(str) {
return str.replace(/(^\s*)|(\s*$)/g,"");
}

[ecobin]

<script>
function NegBlank(str)
{
return str.replace(/(^\s*)|(\s*$)/g, "");
}
document.write("welcome "+NegBlank(" to Beijing "))
</script>

[smallyear]

replace(/(^\s*)|(\s*$)/ig,"");

[gaofaq]

<script>
String.prototype.trim=function() {
return this.replace(/(^\s*)|(\s*$)/ig,"");
}
alert(" gao faq ".trim());
</script>

[lichunloverit]

多谢各位高人指点

[gaofaq]

光谢就完了吗
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点右上角的管理
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输入你的密码
点结贴

[ouyld]

replace(/(^\s*)|(\s*$)/ig,"");

[cgliang00]

javascript中string不支持trim(）吧，要自定义函数？

[JK_10000]

/(^\s*)|(\s*$)/

--->>>

(^\s+)|(\s+$)/

[hyxgdzj]

说来说都是一样的replace(/(^\s*)|(\s*$)/,'')

[是是非非]

String.prototype.trim=function (){return this.replace(/(^\s*)|(\s*$)/,'');}
var str=' aaaaaa ';
alert(str.trim());

[是是非非]

<script language="JavaScript">
<!--
String.prototype.trim=function (){return this.replace(/(^\s*)|(\s*$)/g,'');}
var str=' aaaaaa ';
alert('['+str.trim()+']');
-->
</script>