一个JavaScript去除字符串末尾的空白实例代码

每天一个JavaScript实例-<a href="https://www.jb51.cc/tag/quchu/" target="_blank" class="keywords">去除</a>字符串末尾的空白

<a href="#" onClick="white()">clickMe</a> 
</body> 
</html></pre>
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<p>检测低版本浏览器，向下兼容：</p>
<div class="jb51code">
<pre class="brush:js;">
if(typeof String.trim == "undefined") 
String.prototype.trim = function(){ 
return this.replace(/(^\s*)|(\s*$)/g,""); 
} 
}</pre>
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