小编典典

尝试通过JQuery进行2个Ajax调用,然后添加数据

ajax

我正在处理Freecodecamp Twitch API项目,但无法获取显示正确的API数据。徽标,频道和状态返回为未定义。

我知道API肯定可以正常工作。我编写代码的方式一定有问题,但无法弄清楚是什么。

这是我的代码:

$(document).ready(function() {

  var users = ["ESL_SC2", "OgamingSC2", "cretetion", "freecodecamp", "storbeck", "habathcx", "RobotCaleb", "noobs2ninjas"];

  for (i=0; i<users.length; i++) {
    var url="https://api.twitch.tv/kraken/channels/" + users[i];
    var logo;
    var channel;
    var status;
    $.ajax ({
      type: 'GET',
        url: url,
      headers: {
        'Client-ID': 'hw8qejm816w6tjk88fdhfjz1wxpypm'
      },
      success: function(data) {
        logo = data.logo;
        channel = data.name;
      }

    });
    var url2 = "https://api.twitch.tv/kraken/streams/" + users[i];
    $.ajax ({
      type: 'GET',
      url: url2,
      headers: {
        'Client-ID': 'hw8qejm816w6tjk88fdhfjz1wxpypm'
      },
      success: function(data2) {
        if (data2.stream == null) {
          status = "Offline";
        } else {
          status = "Online";
        };

      }

    });
    $("#channelInfo").prepend("<div class='row'><div class='col-xs-4'><img src="+logo+"></div><div class='col-xs-4'>"+channel+"</div><div class='col-xs-4'>"+status+"</div>")

  };
});

这是我的代码笔的链接:http
://codepen.io/drhectapus/pen/VPNQJa?editors=1011

任何帮助将不胜感激。


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2020-07-26

共1个答案

小编典典

由于AJAX在默认情况下是异步的,因此您的最后一行将在ajax请求完成之前得到执行。您应该在自己的success: function(data)区域内拥有通话后结果,如下所示。请注意,我已添加async:false到您的ajax调用中,以便内部请求按顺序进行,这将使您的对象保持同步:

$(document).ready(function() {

  var users = ["ESL_SC2", "OgamingSC2", "cretetion", "freecodecamp", "storbeck", "habathcx", "RobotCaleb", "noobs2ninjas"];

  for (i=0; i<users.length; i++) {
    var url="https://api.twitch.tv/kraken/channels/" + users[i];
    var user = users[i];
    var logo;
    var channel;
    $.ajax ({
      type: 'GET',
      url: url,
      async: false,
      headers: {
        'Client-ID': 'hw8qejm816w6tjk88fdhfjz1wxpypm'
      },
      success: function(data) {
        logo = data.logo;
        channel = data.name;

        var url2 = "https://api.twitch.tv/kraken/streams/" + user;
        $.ajax ({
          type: 'GET',
          async: false,
          url: url2,
          headers: {
            'Client-ID': 'hw8qejm816w6tjk88fdhfjz1wxpypm'
          },
          success: function(data) {
            if (data.stream == null) {
              status = "Offline";
            } else {
              status = "Online";
            };
            $("#channelInfo").append("<div class='row'><div class='col-xs-4'><img src="+logo+"></div><div class='col-xs-4'>"+channel+"</div><div class='col-xs-4'>"+status+"</div></div>");
          }

        });
      }

    });
  };
});
2020-07-26