我試圖從代碼完美的作品時,我有沒有別的我的網頁上developers.google.com/*YouTube播放器API樣品
<script>
// 2. This code loads the IFrame Player API code asynchronously.
var tag = document.createElement('script');
tag.src = "https://www.youtube.com/iframe_api";
var firstScriptTag = document.getElementsByTagName('script')[0];
firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
// 3. This function creates an <iframe> (and YouTube player)
// after the API code downloads.
var player;
function onYouTubeIframeAPIReady() {
player = new YT.Player('player', {
height: '390',
width: '640',
videoId: 'yZxrao3zou4',
events: {
'onReady': onPlayerReady,
'onStateChange': onPlayerStateChange
}
});
}
// 4. The API will call this function when the video player is ready.
function onPlayerReady(event) {
event.target.playVideo();
}
// 5. The API calls this function when the player's state changes.
// The function indicates that when playing a video (state=1),
// the player should play for six seconds and then stop.
var done = false;
function onPlayerStateChange(event) {
if (event.data == YT.PlayerState.PLAYING && !done) {
setTimeout(stopVideo, 6000);
done = true;
}
}
function stopVideo() {
player.stopVideo();
}
</script>
給出的樣本下面的代碼,但是當我嘗試將其與我的項目合併它似乎並不奏效。
我猜問題是下面幾行:
var firstScriptTag = document.getElementsByTagName('script')[0];
firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
有人能告訴我這是什麼上面兩行,尤其是[0]的一部分?
我的代碼幾乎是相同的,除了代替腳本標記我有一個函數內的代碼,它接受videoId的參數。
編輯: 我的代碼如下:
<script>
// I have a input area, where the user can enter the movie name. When the user submits the movie name, I capture the val and pass it to the youtube().
function youtube(movie_name) {
var videoId;
$.ajax({
url:"https://www.googleapis.com/youtube/v3/search?part=snippet&q="+movie_name+"&type=video&key=my_key",
success: function (response) {
videoId = response.items[0].id.videoId;
findMovieById(videoId);
}
});
}
function findMovieById(videoID) {
$("#player").css('display', 'inline-block');
var tag = document.createElement('script');
tag.src = "https://www.youtube.com/iframe_api";
var firstScriptTag = document.getElementsByTagName('script')[0];
firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
// 3. This function creates an <iframe> (and YouTube player)
// after the API code downloads.
var player;
function onYouTubeIframeAPIReady() {
player = new YT.Player('player', {
height: '390',
width: '640',
videoId: ""+videoID,
events: {
'onReady': onPlayerReady,
'onStateChange': onPlayerStateChange
}
});
}
// 4. The API will call this function when the video player is ready.
function onPlayerReady(event) {
alert('Player Ready');
event.target.playVideo();
}
// 5. The API calls this function when the player's state changes.
// The function indicates that when playing a video (state=1),
// the player should play for six seconds and then stop.
var done = false;
function onPlayerStateChange(event) {
if (event.data == YT.PlayerState.PLAYING && !done) {
setTimeout(stopVideo, 6000);
done = true;
}
}
function stopVideo() {
player.stopVideo();
}
}
</script>
document.getElementsByTagName('script')返回html上所有腳本元素的數組,並且此代碼在您的第一個腳本標記(腳本標記數組的第0個元素)之前插入iframe_api。你能顯示你的合併代碼嗎? –