过滤 URL 参数 空值，删除 FORM GET URL 空值解决函数方法

//form 上增加id或class
$(".orgainzationSubmit").submit(function(e){
       self.location = clearUrlParam($(this), e);
    })

    //过滤url参数空值删除掉函数，返回过滤后的url
    function clearUrlParam(_this, event){
      let urlParam = _this.serialize()
      let splitStr = urlParam.split('&')
      var newStr = ''
      var label = ''
      for (var i = 0; i < splitStr.length; i++ ) {
        let splitStrArray = splitStr[i].split('=')
        if (splitStrArray[1].length > 0) {
          newStr += unescape(splitStrArray[0] +'='+ splitStrArray[1] + '&')
        }
      }
      if(newStr != ''){
        label = '?'
        newStr = newStr.substring(0,newStr.length-1)
      }
      event.preventDefault()
      return _this.attr('action') + label + newStr
    }