Question

我试图根据该歌曲的ID在json数组对象中获取一首特定歌曲。我的json文件看起来像这样......

文件名“playlist.json”......

 "song": [
       {
           "songTitle": "Song Title 01",
           "songDesc": "This is the description",
           "songUrl": "./music/sample.mp3",
           "ID": 1
       },
       {
           "songTitle": "Song Title 02",
           "songDesc": "This is the description",
           "songUrl": "./music/sample.mp3",
           "ID": 2
       }
]

请注意，json文件中还有其他对象。这只是歌曲列表。

我已经尝试过这样做并且不断出现错误。我可以获取一行的内容，但无法弄清楚如何只获取ID为1的特定行的内容。

$(function() {
$.getJSON('playlist.json', function(data) {
$.each(data.song, function(i, f) {
if (f.ID == 1) {
var currentStation = f.songUrl
}
});});});

如你所见，我显然不知道自己在做什么。我只想返回ID = 1的行的歌曲URL，然后将该歌曲URL设为currentStation变量。

请帮忙。

Answer 1

var currentStation; 


$(function() {
   $.getJSON('http://localhost:8080/playlist.json', function(data) {

        var songs = data["song"];

        for( var song_key in songs){  // Looping through songs by associating song to each javascript object found in the array.
            if(songs[song_key]["ID"] == 1){
                currentStation = songs[song_key]["songUrl"];
            }
        }
        console.log(currentStation);
    });
});

json条件只获得一个对象的val

1 个答案: