处理跨域jsonp调用的jQuery.ajax错误

$.ajax({
  url: "http://example.com/jsonp",
  dataType: "jsonp",
  jsonp: "callback",
  error: function(jqXHR, textStatus, errorThrown) {
    console.log("请求失败：" + textStatus + "，错误信息：" + errorThrown);
  }
});

$.ajax({
  url: "http://example.com/jsonp",
  dataType: "jsonp",
  jsonp: "callback",
  statusCode: {
    404: function() {
      console.log("请求的资源未找到");
    },
    500: function() {
      console.log("服务器内部错误");
    }
  }
});

$.ajax({
  url: "http://example.com/jsonp",
  dataType: "jsonp",
  jsonp: "callback",
  timeout: 5000,
  error: function(jqXHR, textStatus, errorThrown) {
    if (textStatus === "timeout") {
      console.log("请求超时");
    } else {
      console.log("请求失败：" + textStatus + "，错误信息：" + errorThrown);
    }
  }
});