故障进行简单的GET请求返回JSON的JavaScript [英] Trouble performing simple GET request returning JSON with Javascript

问题描述

我是可怕的，在Javascript中，提前让对不起什么，我要继续前进，并假设是一个令人惊讶的愚蠢的问题。

I'm horrible at Javascript, so sorry in advance for what I'm going to go ahead and assume is an amazingly stupid question.

我只是试图执行一个GET请求到GitHub的公开回购的API给定用户，并返回值作为JSON。

I'm simply trying to perform a GET request to GitHub's public repo API for a given user, and return the value as JSON.

下面的功能我想要使用：

Here's the function I'm trying to use:

function get_github_public_repos(username) {

    var the_url = "http://github.com/api/v2/json/repos/show/" + username

    $.ajax({
      url: the_url,
      dataType: 'json',
      type: 'get',
      success: function(data) {
        alert('raw data: ' + data)
        var json_response = $.parseJSON(data);
        alert(json_response);
      }
    });
}

这是返回NULL数据。而在控制台中，我看到无法加载资源：取消。我知道网址是正确的，因为如果我跑卷曲的URL，它返回预期的数据。

This is returning Null for data. And in the console, I see Failed to load resource: cancelled. I know the URL is correct, because if I run curl on the url, it returns the expected data.

推荐答案

jQuery的AJAX功能支持JSONP，它允许跨域请求（你需要，因为你试图请求github.com数据从另一个域）。

jQuery's ajax function supports JSONP which allows cross-domain requests (which you need because you're trying to request data from github.com from another domain). Just change the dataType from 'json' to 'jsonp';

function get_github_public_repos(username) {

    var the_url = "http://github.com/api/v2/json/repos/show/" + username

    $.ajax({
      url: the_url,
      dataType: 'jsonp',
      type: 'get',
      success: function(data) {
        var json_response = data;
        alert(data);
      }
    });
}

更新：它的进口地注意到，端品脱（这种情况下github.com的API中）具有支持JSONP这个工作。它不会对任何跨域请求guarnateed解决方案在评论中指出的。

UPDATE: It's import to note that the end pint (in this case github.com's API) has to support JSONP for this to work. It's not a guarnateed solution for ANY cross-domain request as pointed out in the comments.

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