即使响应http状态为200，也会执行jQuery ajax错误回调

Question

I have written simple ajax code, in success callback I have written an alert but it does not work.

The code is:

$(".change_forex_transaction_status").click(function(){
  $("#insufficient_funds").css("display","none");
  var id = $(this).attr('data-transaction_id');
  //var ttype = $(this).attr('data-ttype');
  if (confirm("Are you sure you want to mark this transaction as complete?")) {
    $(this).unbind("click");
    $.ajax({
      url:"<?php echo Yii::app()->getBaseUrl(true);?>/customer/changeForexTransactionStatus",
      type:"POST",
      dataType: "json",
      //data:{id:id,tidentify:2,ttype:ttype},
      data:{id:id,tidentify:2},
      success:function(res){
        if(res == "unauthorized"){
          alert("You Are not authorize to perform this action.");

        }else{
        if(res == "success"){
          location.reload();
        } else if(res == "insufficient_fund"){
          alert('Insufficient Fees');
          $("#insufficient_funds").css("display","block");
        } else if(res == 'invalid_fee_account'){
          alert('Invalid Merchant Fees Account');
        }
      }
      },
      error:function(t) {
        console.log(t);
      }
    });
  }
});

Even though the response http status code is 200, it goes into error callback whereas it should have gone in success callback and opened an alert box.

Can anyone please help on this.

Answer 1

您期望json返回不是文本，所以将ajax dataType更改为text

 dataType: "text",

Answer 2

Use JSON.stringify to post data on server, and when you post data to server in json so use content type "application/json" . Now if you expect data in json from server then use dataType: "json" . If data from server is html then you can use dataType: "html" or it is text then you can use dataType: "text" .

data: JSON.stringify({ id: id, tidentify: 2 }),
contentType: "application/json",
dataType: "json"