jQuery - 通过JSON数组搜索 [英] jQuery - Search through JSON array

问题描述

我需要搜索JSON数据并找到每个包含kind播放列表的对象，然后遍历轨道并提取将放入hmtl列表的信息。问题是，在某些情况下（取决于URL的类型）而不是包含所有对象的多维数组，json信息只是一个单一对象。

是两种url类型。

这是一个只包含一级信息的播放列表。
http://api.soundcloud.com/playlists/1980151.json ？client_id = bcc776e7aa65dbc29c40ff21a1a94ecd

这是一个只包含多个播放列表作为对象的数组。
http://api.soundcloud.com/users/dubstep /playlists.json?client_id=bcc776e7aa65dbc29c40ff21a1a94ecd

目前的代码是这样的：

  $ .getJSON（'http://api.soundcloud.com/users/dubstep/playlists.json?client_id=bcc776e7aa65dbc29c40ff21a1a94ecd'，{get_param：'value'}，function（url_data）{ 
 $ .each（url_data，function（i，elem）{
 if（elem.kind ==='playlist'）{
 $ .each（elem.tracks，function（i， elem）{
 console.log（elem.title）; 
}）; 
} 
}）; 
  

$ b $ p
$ b

仅当 处理用户网址时才起作用有多个播放列表。

为了总结我的问题，我需要一种方法来搜索数组的所有级别以找到具有===播放列表的级别。

解决方案

这应该做你想要的。

  $。each（json，function（i，elem）{
 if（elem.kind ==='playlist'）{
 $ .each（elem.tracks，function i，elem）{
 console.log（elem.title）; 
}）; 
} 
}）; 
  

更新：

这将适用于任一网址。另外，这里有更多更高级的客户端输出： http://jsfiddle.net/jTLvE/

  var parse = function（json）{
 $ .each（json，function（i，elem）{ 
 if（elem.kind ==='playlist'）{
 $ .each（elem.tracks，function（i，elem）{
 console.log（elem.title）; 
}）; 
} 
}）; 
}，
 parseReturnedData = function（json）{
 var isObject =（typeof json ==='object'&&& json instanceof Object），
 isArray =（typeof json ==='object'&&& json instanceof Array），
 newArray = []; 
 if（isArray）{
 parse（json）; 
} else if（isObject）{
 newArray.push（json）; 
 parse（newArray）; 
} 
}; 
  

I need to search through JSON data and find every object that contains the "kind" "playlist" and then go through the tracks and pull information which will be put into a hmtl list. The problem is that in some instances (depending on the type of URL) instead of a multidimensional array containing all the objects, the json information is just a singular object.

Below are the two url types.

This is a playlist which contains just one level of information. http://api.soundcloud.com/playlists/1980151.json?client_id=bcc776e7aa65dbc29c40ff21a1a94ecd

This is an array which contains just multiple playlists as objects. http://api.soundcloud.com/users/dubstep/playlists.json?client_id=bcc776e7aa65dbc29c40ff21a1a94ecd

The current code I have is this:

$.getJSON('http://api.soundcloud.com/users/dubstep/playlists.json?client_id=bcc776e7aa65dbc29c40ff21a1a94ecd', { get_param: 'value' }, function(url_data) {
$.each(url_data, function (i, elem) {
    if (elem.kind === 'playlist') {
        $.each(elem.tracks, function (i, elem) {
            console.log(elem.title);
        });
    }
});

});

It only works when dealing with "user" urls where there are multiple playlists.

To sum up what my issue is, I need a way to search through all the levels of an array to find levels with the kind === playlist.

解决方案

This should do what you're looking for.

$.each(json, function (i, elem) {
    if (elem.kind === 'playlist') {
        $.each(elem.tracks, function (i, elem) {
            console.log(elem.title);
        });
    }
});

UPDATE:

This will work with either URL. Also, here's a fiddle with more a more advanced client-side output: http://jsfiddle.net/jTLvE/

var parse = function (json) {
    $.each(json, function (i, elem) {
        if (elem.kind === 'playlist') {
            $.each(elem.tracks, function (i, elem) {
                console.log(elem.title);
            });
        }
    });
},
parseReturnedData = function (json) {
    var isObject = (typeof json === 'object' && json instanceof Object),
        isArray = (typeof json === 'object' && json instanceof Array),
        newArray = [];
    if (isArray) {
        parse(json);
    } else if (isObject) {
        newArray.push(json);
        parse(newArray);
    }
};

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