如何在视频播放时更新视频的当前时间?


开始

播放视频后的每一秒,我希望它运行称为showComments的功能

为了确保它每秒都在运行,我只是添加了

alert(getCurrentTime().toFixed());

但是,它甚至没有运行:(

如何使此运行显示评论每秒运行一次?

这是演示和代码。

演示:https://jsfiddle.net/f0buajyz/

<div id="player"></div>
<script>
    var tag = document.createElement('script');
    tag.src = "https://www.youtube.com/iframe_api";
    var firstScriptTag = document.getElementsByTagName('script')[0];
    firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
    var player;
    function onYouTubeIframeAPIReady() {
        player = new YT.Player('player', {
            height: '270',
            width: '480',
            videoId: 'mzIdhSTHJts',
        });
    }

    var fixedTimeHtml5Youtube = 0;
    function getStatus(){
        if(player.getCurrentTime().toFixed() != fixedTimeHtml5Youtube){
            alert(getCurrentTime().toFixed());
            showComments(player.getCurrentTime().toFixed());
            fixedTimeHtml5Youtube = player.getCurrentTime().toFixed();
        }  
    }
</script>

您可以使用 setInterval 每 1000ms(1s) 运行一次函数,并结合 onStateChange 事件。每当事件触发时,它都会检查视频是否正在播放。如果它正在播放,它会每秒开始调用 showComments 函数。否则,它将停止间隔。

工作小提琴:https://jsfiddle.net/crisbeto/f0buajyz/4/

.HTML:

<div id="player"></div>
<textarea id="output"></textarea>

JavaScript:

var tag = document.createElement('script');
var player = null;
var interval = null;
tag.src = "https://www.youtube.com/iframe_api";
document.body.appendChild(tag);    

window.onYouTubeIframeAPIReady = function(){
    player = new window.YT.Player(document.getElementById('player'), {
        height: '270',
        width: '480',
        videoId: 'mzIdhSTHJts',
        events: {
            onStateChange: function(event){
                callback(event);
            }
        }
    });
}
function callback(event){
    var playerStatus = event.data;
    // player is playing
    if(playerStatus === 1){
        interval = setInterval(showComments, 1000);
        // player is stopped
    }else if(interval){
        clearInterval(interval);
    }
}
function showComments(){
    document.getElementById('output').value += "n showComments called.";
}

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