js去除前后空格方法
js去除前后空格方法//去除前后空格方法String.prototype.trim = function(){ return this.replace(/(^\s*)|(\s*$)/g, "");}//去除前面的空格方法String.prototype.trimLeft = function(){ return this.replace(/(^\s*)/g, ""); } //去除后面的空格方法String.prototype.trimRight = function(){ return this.replace(/(\s*$)/g, ""); } //表单验证function fastSubmit(f){var form=f;var ra=form.searchType;var radioValue="";for(var i=0;i<ra.length;i++){ if(ra.checked){ radioValue=ra.value; }}if(radioValue==""){ alert("请选择查询类型！"); return false; }else if(form.content.value.trim()==""){ alert("请输入内容！"); return false;}}<form action="/fastSearch.action" method="post" id="fastForm" > <ul> <li style="padding-left:20px;"> <input type="radio" value="0" name="searchType"/> PN / FC <input type="radio" value="1" name="searchType"/> 整机型号 <input type="radio" value="2" name="searchType"/> 整机名称 <input type="text" class="m3" name="content"/> </li> <li> <input type="submit" value="提交"/> </li> </ul></form>
参考：
http://blog.stevenlevithan.com/archives/faster-trim-javascript
http://www.iteye.com/topic/1021677
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