JS去除空格（转）

 1 SCRIPT LANGUAGE="JavaScript">   
 2 <!--   
 3 //出处:网上搜集   
 4 // Trim() , Ltrim() , RTrim()   
 5 String.prototype.Trim = function()    
 6 {    
 7 return this.replace(/(^\s*)|(\s*$)/g, "");    
 8 }    
 9 String.prototype.LTrim = function()    
10 {    
11 return this.replace(/(^\s*)/g, "");    
12 }    
13 String.prototype.RTrim = function()    
14 {    
15 return this.replace(/(\s*$)/g, "");    
16 }    
17 //-->   
18 </SCRIPT>   
19 <input type="text" value="   前后都是空格    " >   
20 <input type="button" value="去前后空格" onclick="javascript:document.getElementById('space').value=document.getElementById('space').value.Trim();document.getElementById('space').select();">   
21 <input type="button" value="去前空格" onclick="javascript:document.getElementById('space').value=document.getElementById('space').value.LTrim();document.getElementById('space').select();">   
22 <input type="button" value="去后空格" onclick="javascript:document.getElementById('space').value=document.getElementById('space').value.RTrim();document.getElementById('space').select();">   
23 <input type="button" value="还原" onclick="javascript:document.getElementById('space').value='     前后都是空格    ';">   
24 <a href="http://www.yaoasnsi.com" target="_blank">访问yaosansi.com</a>