$ .ajax-数据类型 [英] $.ajax - dataType

问题描述

contentType: "application/json; charset=utf-8",
dataType: "json",

vs.

contentType: "application/json",
dataType: "text",

推荐答案

• contentType是发送到服务器的标头，指定特定格式.
  • 示例:我正在发送json或XML
  • contentType is the header sent to the server, specifying a particular format.
    • Example: I'm sending json or XML
    • 期望JSON，XML或HTML等...jQuery尝试将其弄清楚的默认值.

    $.ajax()文档对此也有完整描述.

    The $.ajax() documentation has full descriptions of these as well.

    在您的特定情况下，第一个请求将响应保存在utf-8中，第二个则不在乎.同样，第一个将响应视为javascript对象，第二个将其视为字符串.

    In your particular case, the first is asking for the response to be in utf-8, the second doesn't care. Also the first is treating the response as a javascript object, the second is going to treat it as a string.

    第一个是:

    success: function(data) {
      //get data, e.g. data.title;
    }
    

    第二个:

    success: function(data) {
      alert("Here's lots of data, just a string: " + data);
    }
    

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