JS 去字符串空格 总结

转载自:http://www.cnblogs.com/fumj/p/3406420.html

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,"");

原文地址:https://www.cnblogs.com/zrui-xyu/p/4898258.html