ajax 编辑保存table

function save(){   var url = "${ctx}/repayment/saveRepaymentPlan";   var table = document.getElementById("contentTableTbody");   $("#btnSubmit").attr("disabled", "true");   loading('正在提交，请稍等...');   var jsonStr = "[";   for(var i=0; i<table.rows.length; i++){      // 标id      var bid = $("#contentTableTbody tr:eq("+i+")").find("input[name^='bid']").val();      // 代扣管理费      var managementCost = $("#contentTableTbody tr:eq("+i+")").find("input[name^='managementCost']").val();      // 还款计划id      var planId = $("#contentTableTbody tr:eq("+i+")").find("input[name^='planId']").val();      //参数JSON      jsonStr = jsonStr + "{\"bid\":\""+bid+"\",\"managementCost\":\""+managementCost+"\",\"planId\":\""+planId+"\"},"   }   jsonStr = jsonStr.substring(0,jsonStr.length-1)+"]"   $.ajax({      url:url,      type:'post',      data:{"afterPayPlan":jsonStr},      dataType:'JSON',      success:function(result){         if(result.status == '20000102'){            alert(result.msg);            window.location.href="";         }else{            alert(result.msg);            $("#btnSubmit").attr("disabled", "false");            //loading();         }      },      error:function(result){         alert("提交失败，请联系管理员！");         $("#btnSubmit").attr("disabled", "false");         window.location.href="";         //loading();      }   });   //alert(jsonStr);};