通过JavaScript抓取Reddit数据 [英] grabbing Reddit data via javascript

问题描述

我碰到了这篇文章，这几乎是我想要做的:

I came across this post, which is pretty much what I'm looking to do:

如何提取url数据使用JSON从Reddit API中获取

我已经修改了提供的jsfiddle( NSFW http://jsfiddle .net/DHKtW/170/)显示为:

I have modified the jsfiddle that was provided (NSFW http://jsfiddle.net/DHKtW/170/) to read:

$.getJSON("http://www.reddit.com/r/pics/.json?jsonp=?", function(data) {
  $.each(data.data.children, function(i,item){
    console.log($('.score.likes').html(item));
  });
});

我的目标是在给定的页面上收集全部支持.当您运行此命令并查看控制台时，将返回对象，而不是实际的数目.我以为只在选择器上调用html会返回票数，但显然是错误的.有更好的方法吗?

My goal is to gather the total amount of upvotes on a given page. When you run this and look at the console, objects are being returned but not the actual number. I thought just calling html on the selector would return the number of votes but apparently am wrong. Any better way of doing this?

推荐答案

您需要console.log(item)才能查看返回的数据.使用它，我们可以看到item.data.score返回帖子的分数.

You need to console.log(item) to see the returned data. Using that we can then see that item.data.score returns the score of a post.

$.getJSON("http://www.reddit.com/r/pics/.json?jsonp=?", function (data) {
    $.each(data.data.children, function (i, item) {
        console.log(item.data);
        $('<div/>', {
            text: 'Post ' + item.data.permalink + ' has a score of ' + item.data.score
        }).appendTo('#images');
    });
});

http://jsfiddle.net/DHKtW/353/

看到没有数字的对象的原因是因为您调用了console.log($('selector'))并且返回了jQuery对象而不是请求中的json.

The reason you saw objects without number is because you called console.log($('selector')) and that returns the jQuery object not the json from the request.

这篇关于通过JavaScript抓取Reddit数据的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！