form表单实现下载功能

//实现步骤：
//1.给下载元素添加点击事件
//2.创建form标签
//3.通过input的type="hidden"来传递后台需要的参数
//4.借助form的submit方法提交数据到后台实现下载功能

   <button class="downResult">下载</button>
    $(".downResult").off('click').on('click',function(){
        var $eleForm = $("<form method='get'></form>");
        var tempInput = "<input type = 'hidden' name = 'clearStartDate' value = '"+timeStart+"' />"
            +"<input type = 'hidden' name = 'clearEndDate' value = '"+timeEnd+"' />"
            +"<input type = 'hidden' name = 'parkOperatorType' value = '"+parkOperatorType+"' />"
            +"<input type = 'hidden' name = 'parkName' value = '"+parkName+"' />"
        ;
        $eleForm.append(tempInput);
        $eleForm.attr("action", serverUrl+"parkClearing/exportParkClearingData");
        $(document.body).append($eleForm);
        $eleForm.submit();
        $eleForm.remove();
    });