2
我已經在這個主題上進行了很多搜索，但是我只能找到與Youtube API的V2相關的資源，這些資源也沒有被depricated。使用Youtube V3 API和JavaScript獲取Youtube視頻網址
我想要做的就是從使用Javascript的Youtube V3 API URL的JSON響應中獲取Youtube視頻標題，縮略圖和鏈接。
我運行下面的代碼，但得到一個錯誤消息Uncaught TypeError: Cannot read property 'items' of undefined
<input id="searchquery" />
<div id="results"></div>
<!-- Include the latest jQuery library -->
<script src="http://code.jquery.com/jquery-latest.min.js"></script>
<script type="text/javascript">
jQuery(document).ready(function ($) {
$('#searchquery').keyup(function() {
// the search term
var q = $('#searchquery').val().trim();
// container to display search results
var $results = $('#results');
// YouTube Data API base URL (JSON response)
var url = "https://www.googleapis.com/youtube/v3/search?part=snippet&order=date&key=AIzaSyC3TJRI1C0EVEdl7b19InH1gv9yrAOX2YU"
url = url + '&max-results=50';
$.getJSON(url + "&q=" + q, function (json) {
var count = 0;
if (json.data.items) {
var items = json.data.items;
var html = "";
items.forEach(function (item) {
// Check the duration of the video,
// full-length movies are generally longer than 1 hour
var duration = Math.round((item.duration)/(60 * 60));
// Filter out videos that aren't in the Film or Movies category
if ((duration > 1) && (item.category == "Movies" || item.category == "Film")) {
// Include the YouTube Watch URL youtu.be
html += '<p><a href="http://youtu.be/' + item.id + '">';
// Add the default video thumbnail (default quality)
html += '<img src="http://i.ytimg.com/vi/' + item.id + '/default.jpg">';
// Add the video title and the duration
html += '<h2>' + item.title + ' ' + item.duration + '</h2></a></p>';
count++;
}
});
}
// Did YouTube return any search results?
if (count === 0) {
$results.html("No videos found");
} else {
// Display the YouTube search results
$results.html(html);
}
});
});
});
</script>
我的網址是 https://www.googleapis.com/youtube/v3/search?part=snippet&order=date&key=AIzaSyC3TJRI1C0EVEdl7b19InH1gv9yrAOX2YU&q=opencourseware
這將返回
{
"kind": "youtube#searchListResponse",
"etag": "\"sGDdEsjSJ_SnACpEvVQ6MtTzkrI/anQeVHiFN6CH_dx-tP89Q8heOos\"",
"nextPageToken": "CAUQAA",
"pageInfo": {
"totalResults": 24815,
"resultsPerPage": 5
},
"items": [
{
"kind": "youtube#searchResult",
"etag": "\"sGDdEsjSJ_SnACpEvVQ6MtTzkrI/4DMiUQkDt0Bic4cV0lZbi7KZ1tk\"",
"id": {
"kind": "youtube#playlist",
"playlistId": "PL-4XVpiAbrw8bRUhUHfm-omUYAyBepYiB"
},
"snippet": {
"publishedAt": "2015-09-01T06:23:39.000Z",
"channelId": "UCOY4GuDhH3KHVcpZqD5S87w",
"title": "Popular Videos - Bioinformatics & OpenCourseWare",
"description": "",
"thumbnails": {
"default": {
"url": "https://i.ytimg.com/vi/R-PjAS8d1_0/default.jpg"
},
"medium": {
"url": "https://i.ytimg.com/vi/R-PjAS8d1_0/mqdefault.jpg"
},
"high": {
"url": "https://i.ytimg.com/vi/R-PjAS8d1_0/hqdefault.jpg"
}
},
"channelTitle": "",
"liveBroadcastContent": "none"
}
},
{
"kind": "youtube#searchResult",
"etag": "\"sGDdEsjSJ_SnACpEvVQ6MtTzkrI/-D3XCQyB-podnhbL-keBQoIZMb8\"",
"id": {
"kind": "youtube#video",
"videoId": "vOpp8nOp9uA"
},
"snippet": {
"publishedAt": "2015-08-10T09:27:38.000Z",
"channelId": "UCBL-6EKd9b1DW73ZcY-PNcw",
"title": "Audio OpenCourseWare",
"description": "OpenCourseWare dilaksanakan pada tanggal 10 Juli 2015 di Ruang Video Conference, Gedung D, Lantai 2 Direktorat Sistem Informasi, Telkom University ...",
"thumbnails": {
"default": {
"url": "https://i.ytimg.com/vi/vOpp8nOp9uA/default.jpg"
},
"medium": {
"url": "https://i.ytimg.com/vi/vOpp8nOp9uA/mqdefault.jpg"
},
"high": {
"url": "https://i.ytimg.com/vi/vOpp8nOp9uA/hqdefault.jpg"
}
},
"channelTitle": "",
"liveBroadcastContent": "none"
}
},
{
"kind": "youtube#searchResult",
"etag": "\"sGDdEsjSJ_SnACpEvVQ6MtTzkrI/hwBjyzzUi0M3qf0QKR6EvAD6RTs\"",
"id": {
"kind": "youtube#playlist",
"playlistId": "PL2Co6UkQCJCrvFuM-KEY6Pfccm2PKNhGe"
},
"snippet": {
"publishedAt": "2015-08-03T21:28:26.000Z",
"channelId": "UCqHlUWMIi07M5U6kVSJT7RA",
"title": "Popular Videos - OpenCourseWare & Teacher",
"description": "",
"thumbnails": {
"default": {
"url": "https://i.ytimg.com/vi/SQI2I48QUBQ/default.jpg"
},
"medium": {
"url": "https://i.ytimg.com/vi/SQI2I48QUBQ/mqdefault.jpg"
},
"high": {
"url": "https://i.ytimg.com/vi/SQI2I48QUBQ/hqdefault.jpg"
}
},
"channelTitle": "",
"liveBroadcastContent": "none"
}
},
{
"kind": "youtube#searchResult",
"etag": "\"sGDdEsjSJ_SnACpEvVQ6MtTzkrI/igp-ZANLFmAQxfuTsPHpNeJwdwg\"",
"id": {
"kind": "youtube#playlist",
"playlistId": "PLfu3FYNDydnC8bAZrkXpFXXxbCE8O9ZYS"
},
"snippet": {
"publishedAt": "2015-07-07T15:38:00.000Z",
"channelId": "UCqL4K9FRJ90uHEvRsSXi5cA",
"title": "Popular Videos - MIT OpenCourseWare & Field",
"description": "",
"thumbnails": {
"default": {
"url": "https://i.ytimg.com/vi/PgE9oBDIgdc/default.jpg"
},
"medium": {
"url": "https://i.ytimg.com/vi/PgE9oBDIgdc/mqdefault.jpg"
},
"high": {
"url": "https://i.ytimg.com/vi/PgE9oBDIgdc/hqdefault.jpg"
}
},
"channelTitle": "",
"liveBroadcastContent": "none"
}
},
{
"kind": "youtube#searchResult",
"etag": "\"sGDdEsjSJ_SnACpEvVQ6MtTzkrI/9G1cGWzCiMxuc7L_KpgWTyJFjzk\"",
"id": {
"kind": "youtube#playlist",
"playlistId": "PL2Co6UkQCJCp_IpNmpim5CPhKC0gE95jv"
},
"snippet": {
"publishedAt": "2015-06-19T21:28:19.000Z",
"channelId": "UCqHlUWMIi07M5U6kVSJT7RA",
"title": "Popular Videos - OpenCourseWare & Educational Technology",
"description": "",
"thumbnails": {
"default": {
"url": "https://i.ytimg.com/vi/ad4oFCHBSRQ/default.jpg"
},
"medium": {
"url": "https://i.ytimg.com/vi/ad4oFCHBSRQ/mqdefault.jpg"
},
"high": {
"url": "https://i.ytimg.com/vi/ad4oFCHBSRQ/hqdefault.jpg"
}
},
"channelTitle": "",
"liveBroadcastContent": "none"
}
}
]
}
感謝@Nick Hammond，它的工作原理 –