问题
I\'ve looked through a couple of questions to find out if an HTML5 element is playing, but can\'t find the answer. I\'ve looked at the W3 documentation and it has an event named \"playing\" but I can\'t seem to get it to work.
This is my current code:
var stream = document.getElementsByTagName(\'video\');
function pauseStream() {
if (stream.playing) {
for (var i = 0; i < stream.length; i++) {
stream[i].pause();
$(\"body > header\").addClass(\"paused_note\");
$(\".paused_note\").text(\"Stream Paused\");
$(\'.paused_note\').css(\"opacity\", \"1\");
}
}
}
回答1:
Note : This answer was given in 2011. Please check the updated documentation on HTML5 video before proceeding.
If you just want to know whether the video is paused, use the flag stream.paused.
There is no property for video element for getting the playing status. But there is one event "playing" which will be triggered when it starts to play. Event "ended" is triggered when it stops playing.
So the solution is
- decalre one variable videoStatus
- add event handlers for different events of video
- update videoStatus using the event handlers
- use videoStatus to identify the status of the video
This page will give you a better idea about video events. Play the video on this page and see how events are triggered.
http://www.w3.org/2010/05/video/mediaevents.html
回答2:
It seems to me like you could just check for !stream.paused.
回答3:
My answer at How to tell if a <video> element is currently playing?:MediaElement does not have a property that tells about if its playing or not. But you could define a custom property for it.
Object.defineProperty(HTMLMediaElement.prototype, 'playing', {
get: function(){
return !!(this.currentTime > 0 && !this.paused && !this.ended && this.readyState > 2);
}
})
Now you can use it on video or audio elements like this:
if(document.querySelector('video').playing){
// Do anything you want to
}
回答4:
jQuery(document).on('click', 'video', function(){
if (this.paused) {
this.play();
} else {
this.pause();
}
});
回答5:
Add eventlisteners to your media element. Possible events that can be triggered are: Audio and video media events
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title>Html5 media events</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
</head>
<body >
<div id="output"></div>
<video id="myVideo" width="320" height="176" controls autoplay>
<source src="http://www.w3schools.com/tags/mov_bbb.mp4" type="video/mp4">
<source src="http://www.w3schools.com/tags/mov_bbb.ogg" type="video/ogg">
</video>
<script>
var media = document.getElementById('myVideo');
// Playing event
media.addEventListener("playing", function() {
$("#output").html("Playing event triggered");
});
// Pause event
media.addEventListener("pause", function() {
$("#output").html("Pause event triggered");
});
// Seeking event
media.addEventListener("seeking", function() {
$("#output").html("Seeking event triggered");
});
// Volume changed event
media.addEventListener("volumechange", function(e) {
$("#output").html("Volumechange event triggered");
});
</script>
</body>
</html>回答6:
I encountered a similar problem where I was not able to add event listeners to the player until after it had already started playing, so @Diode's method unfortunately would not work. My solution was check if the player's "paused" property was set to true or not. This works because "paused" is set to true even before the video ever starts playing and after it ends, not just when a user has clicked "pause".
回答7:
Here is what we are using at http://www.develop.com/webcasts to keep people from accidentally leaving the page while a video is playing or paused.
$(document).ready(function() {
var video = $("video#webcast_video");
if (video.length <= 0) {
return;
}
window.onbeforeunload = function () {
var htmlVideo = video[0];
if (htmlVideo.currentTime < 0.01 || htmlVideo.ended) {
return null;
}
return "Leaving this page will stop your video.";
};
}
回答8:
a bit example
var audio = new Audio('https://www.soundhelix.com/examples/mp3/SoundHelix-Song-1.mp3')
if (audio.paused) {
audio.play()
} else {
audio.pause()
}回答9:
function playPauseThisVideo(this_video_id){
var this_video = document.getElementById(this_video_id);
if(this_video.paused){
console.log("VIDEO IS PAUSED");
} else {
console.log("VIDEO IS PLAYING");
}
}
回答10:
I just looked at the link @tracevipin added (http://www.w3.org/2010/05/video/mediaevents.html), and I saw a property named "paused".
I have ust tested it and it works just fine.
回答11:
This is my code - by calling the function play() the video plays or pauses and the button image is changed.
By calling the function volume() the volume is turned on/off and the button image also changes.
function play() {
var video = document.getElementById('slidevideo');
if (video.paused) {
video.play()
play_img.src = 'img/pause.png';
}
else {
video.pause()
play_img.src = 'img/play.png';
}
}
function volume() {
var video = document.getElementById('slidevideo');
var img = document.getElementById('volume_img');
if (video.volume > 0) {
video.volume = 0
volume_img.src = 'img/volume_off.png';
}
else {
video.volume = 1
volume_img.src = 'img/volume_on.png';
}
}
回答12:
I just did it very simply using onpause and onplay properties of the html video tag. Create some javascript function to toggle a global variable so that the page knows the status of the video for other functions.
Javascript below:
// onPause function
function videoPause() {
videoPlaying = 0;
}
// onPause function
function videoPlay() {
videoPlaying = 1;
}
Html video tag:
<video id="mainVideo" width="660" controls onplay="videoPlay();" onpause="videoPause();" >
<source src="video/myvideo.mp4" type="video/mp4">
</video>
than you can use onclick javascript to do something depending on the status variable in this case videoPlaying.
hope this helps...
回答13:
I just added that to the media object manually
let media = document.querySelector('.my-video');
media.isplaying = false;
...
if(media.isplaying) //do something
Then just toggle it when i hit play or pause.
来源：https://stackoverflow.com/questions/8599076/detect-if-html5-video-element-is-playing