JS去除空格格

SCRIPT LANGUAGE="JavaScript">
<!--
//出处:网上搜集
// Trim() , Ltrim() , RTrim()
String.prototype.Trim=function()
{
returnthis.replace(/(^\s*)|(\s*$)/g,"");
}
String.prototype.LTrim =function()
{
returnthis.replace(/(^\s*)/g,"");
}
String.prototype.RTrim =function()
{
returnthis.replace(/(\s*$)/g,"");
}
//-->
</SCRIPT>
<input type="text" value=" 前后都是空格 " id="space">
<input type="button" value="去前后空格" onclick="javascript:document.getElementById('space').value=document.getElementById('space').value.Trim();document.getElementById('space').select();">
<input type="button" value="去前空格" onclick="javascript:document.getElementById('space').value=document.getElementById('space').value.LTrim();document.getElementById('space').select();">
<input type="button" value="去后空格" onclick="javascript:document.getElementById('space').value=document.getElementById('space').value.RTrim();document.getElementById('space').select();">
<input type="button" value="还原" onclick="javascript:document.getElementById('space').value=' 前后都是空格 ';">
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