js去除空格

<pre name="code" class="html">SCRIPT LANGUAGE="JavaScript">
<!--
//出處:網上搜集
// Trim() , Ltrim() , RTrim()
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, ""); 
} 
//-->
</SCRIPT>
<input type="text" value="   前後都是空格    " id="space">
<input type="button" value="去前後空格" οnclick="javascript:document.getElementById('space').value=document.getElementById('space').value.Trim();document.getElementById('space').select();">
<input type="button" value="去前空格" οnclick="javascript:document.getElementById('space').value=document.getElementById('space').value.LTrim();document.getElementById('space').select();">
<input type="button" value="去後空格" οnclick="javascript:document.getElementById('space').value=document.getElementById('space').value.RTrim();document.getElementById('space').select();">
<input type="button" value="還原" οnclick="javascript:document.getElementById('space').value='     前後都是空格    ';">
<a href="http://www.yaoasnsi.com" target="_blank">訪問yaosansi.com</a>