elliott.david 2010-05-14 12:07 采纳率: 25%
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如何捕获 Ajax 查询 post 错误?

I would like to catch the error and show the appropriate message if the Ajax request fails.

My code is like the following, but I could not manage to catch the failing Ajax request.

function getAjaxData(id)
{
     $.post("status.ajax.php", {deviceId : id}, function(data){

        var tab1;

        if (data.length>0) {
            tab1 = data;
        }
        else {
            tab1 = "Error in Ajax";
        }

        return tab1;
    });
}

I found out that, "Error in Ajax" is never executed when the Ajax request failed.

How do I handle the Ajax error and show the appropriate message if it fails?

转载于:https://stackoverflow.com/questions/2833951/how-do-i-catch-an-ajax-query-post-error

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6条回答 默认 最新

  • 零零乙 2010-05-14 12:11
    关注

    Since jQuery 1.5 you can use the deferred objects mechanism:

    $.post('some.php', {name: 'John'})
        .done(function(msg){  })
        .fail(function(xhr, status, error) {
            // error handling
        });
    

    Another way is using .ajax:

    $.ajax({
      type: "POST",
      url: "some.php",
      data: "name=John&location=Boston",
      success: function(msg){
            alert( "Data Saved: " + msg );
      },
      error: function(XMLHttpRequest, textStatus, errorThrown) {
         alert("some error");
      }
    });
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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