js中对String去空格

Posted 2021-11-30 showcase

str为要去除空格的字符串:
去除所有空格:   
str   =   str.replace(/\\s+/g,"");       
去除两头空格:   
str   =   str.replace(/^\\s+|\\s+$/g,"");
去除左空格：
str=str.replace( /^\\s*/, ‘‘);
去除右空格：
str=str.replace(/(\\s*$)/g, "");

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     ‘;">    
<a href="http://www.yaoasnsi.com" target="_blank">访问yaosansi.com</a> 

去除所有空格: 
str = str.replace(/\\s+/g,"");
去除两头空格: 
str = str.replace(/^\\s+|\\s+$/g,"");
去除空格(TimeSheet用过)
arg0=arg0.replace(/\\s+$|^\\s+/g,"");




来源：http://www.cnblogs.com/fumj/p/3406420.html