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AudioContext does not have a pause property?

I have used javascript Audio() before, but now I need to add some reverb effect in the audio and I am using reverb.js which uses the AudioContext api. I have the start property available, but no pause property? How do I pause or stop the audio??
Here is my code:
<script src="http://reverbjs.org/reverb.js"></script>
<script>
// 1) Setup your audio context (once) and extend with Reverb.js.
var audioContext = new (window.AudioContext || window.webkitAudioContext)();
reverbjs.extend(audioContext);
// 2) Load the impulse response; upon load, connect it to the audio output.
var reverbUrl = "http://reverbjs.org/Library/SaintLawrenceChurchMolenbeekWersbeekBelgium.m4a";
var reverbNode = audioContext.createReverbFromUrl(reverbUrl, function() {
reverbNode.connect(audioContext.destination);
});
// 3) Load a test sound; upon load, connect it to the reverb node.
var sourceUrl = "./sample.mp3";
var sourceNode = audioContext.createSourceFromUrl(sourceUrl, function() {
sourceNode.connect(reverbNode);
});
</script>
Play
Stop
Also, I tried using stop(), and it works, but when I fire start() after clicking on stop, the start() doesn't work. Can you you help me out with a solution??

You can use the suspend() and resume() methods of AudioContext to pause and resume your audio: https://developer.mozilla.org/en-US/docs/Web/API/AudioContext/suspend
One way to implement this with a single button for play/pause/resume, would be to add a function that controls the player state. For example:
let started = false;
function pauseOrResume() {
if (!started) {
sourceNode.start();
started = true;
document.getElementById("pauseButton").innerHTML = 'Pause';
} else if (audioContext.state === 'running') {
audioContext.suspend().then(function () {
document.getElementById("pauseButton").innerHTML = 'Resume';
});
} else if (audioContext.state === 'suspended') {
audioContext.resume().then(function () {
document.getElementById("pauseButton").innerHTML = 'Pause';
});
}
}
And replace your existing "Play" button with:
<a id="pauseButton" href="javascript:pauseOrResume()">Play</a>
This does the following:
If the audio hasn't yet been started, the link will say "Play".
If the user clicks "Play", the audio will start playing and the text of the link will change to "Pause".
If the user clicks "Pause" while the audio is playing, it will be paused, and the text of the link will change to "Resume".

Play and Pause with onclick on the same Img

The following script is playing a soundfile when i click on a img (onclick). How do i pause it by clicking on the same img? I´ve tried audio.pause(), but it won´t work.
function play(){
var audio = document.getElementById("myaudio");
audio.style.display="block";
audio.play();
}
<img src="Bilder/play2.png">

You should rename your function to audioHandler() for example which will handle whether to play or pause your audio.
Create a boolean to remember if your audio was playing or was on pause.
//initial status: audio is not playing
var status = false;
var audio = document.getElementById("myaudio");
function audioHandler(){
if(status == false || audio.paused){
audio.play();
status = true;
}else{
audio.pause();
status = false;
}
}

Check the media.paused property of your HTMLMediaElement
function play_pause(media) {
if (media.paused) {
media.play();
else {
media.pause();
}
}
Use this in the handler on the element you want to control the action
var elm = document.getElementById('play_button'),
audio = document.getElementById('myaudio');
elm.addEventListener('click', function (e) {
play_pause(audio);
});

How can I check whether user is currently using the audio seekbar?

I have an HTML audio player like this:
<audio id="audioPlayer" controls>
<source src="test.mp3">
</audio>
I want to display some images in sync the audio file, including when the user is moving the seekbar.
However, I can't find a way to check whether user is currently using the audio seekbar.
I have tried to use the timeupdateevent with no success: the code below works only when user seeks back in time.
var audioPlayer = document.getElementById('audioPlayer');
var lastUpdateTime;
audioPlayer.addEventListener('timeupdate', function() {update();});
function update() {
if ( audioPlayer.currentTime - lastUpdateTime < 0 )
console.log("seeking");
lastUpdateTime = audioPlayer.currentTime;
}
I am looking for something working on "recent" browsers (e.g. IE10+).

It's a bit hacky but works:
Version with jQuery:
var $audio = $( '#myAudio' );
var onPause = false;
// Pause event helps us to know is player playing or not
$audio.on( 'pause', function() {
onPause = true;
setTimeout(function() {
onPause = false;
});
});
$audio[0].on( 'timeupdate', function(e) {
// trick to get current pause state
setTimeout(function(){
// checks if player paused and not last timeupdate event call
if ( $audio[0].paused && !onPause ) {
// Fire event then user is changing seek bar
$audio.trigger( 'userSeeking' );
}
});
});
$audio.on( 'userSeeking', function(){
// do some magic
});
Version with pure javascript:
var audio = document.getElementById( 'myAudio' );
var onPause = false;
var seek = false;
// Pause event helps us to know is player playing or not
audio.addEventListener( 'pause', function(e) {
onPause = true;
setTimeout(function() {
onPause = false;
});
});
audio.addEventListener( 'timeupdate', function(e) {
// trick to get current pause state
setTimeout(function(){
seek = false;
// checks if player paused and not last timeupdate event call
if ( $audio[0].paused && !onPause ) {
seek = true;
// Fire event then user is changing seek bar
}
// or you can return current state of seeking here
});
});
And here is working example ( codepen using jQuery version ):
http://codepen.io/GomatoX/pen/ZYpWbN

Play video if no other video playing

Hi I have a page with multiple small videos which can be played by clicking on the covering image. How can I stop them playing onclick if there is already one playing? My script is as follows
function PlayVideo(aid, vid)
{
var myVideo = document.getElementsByTagName("video");
if (myVideo.paused) {
document.getElementById(vid).style.display = "block";
document.getElementById(vid).play();
document.getElementById(aid).style.display = "none";
document.getElementById(vid).addEventListener('ended', myHandler, false);
function myHandler(e) {
if (!e) {
e = window.event;
}
document.getElementById(vid).style.display = "none";
document.getElementById(vid).load();
document.getElementById(aid).style.display = "block";
}
} else {
alert("this is an alert");
return false;
}
}
Works fine without the if/else statement but any click starts the movie and then several movies are playing at once how do I define the parameters so that IF any video is playing then a new one will not start.

myVideo is a NodeList, you have to check the value of each video.
var allVideos = document.getElementsByTagName("video");
var areAllPaused = true;
for(var i=0; i < allVideos.length; i++) {
if (!allVideos[i].paused) {
areAllPaused = false;
}
}

you could just use a flag to check, ie
var videoIsPlaying = false;
function playVideo () {
if(videoIsPlaying){
//dont play video
}else{
//play video and set to true
videoIsPlaying = true;
}
}
you'd have to set it on pause etc

document.getElementsByTagName() will return an array with all the video elements in it. To check if any of them is playing you need to loop through the array and check whether any video is playing:
var anyPlaying=false;
for(var i=0;i<myVideo.length;i++){
if(!myVideo[i].paused){
anyPlaying=true;
}
}
if(!anyPlaying){
//...
}else{
return false;
}

How to create html button that runs two functions?

Hello I'm trying to create a play and pause button for a little web application I'm creating. I've already made a button that plays and another button that pauses but but now I need a button that'll run the play function when clicked and go back to the pause button when clicked.
var audio = new Audio("audio.mp3");
$(".play").click(function () {
audio.play();
})
$(".pause").click(function () {
audio.pause();
$(this).toggleClass(".play");
});
And here's the buttons
<div class="play"><img src="../images/play.gif"></img></div>
<div class="pause"><img src="../images/pause.gif"></img></div>
I know there could be and easy way to make a div change classes every time its clicked.

I would set up the <html> like this:
<div id="play"><img src="../images/play.gif"></img></div>
<!-- initially a play button -->
Then I would just use a boolean to switch back and forth in the script.
var toggleIt = false;
$("#play").click(function(){
if (!toggleIt){
audio.play();
toggleIt = true;
$("#play").find("img").attr("src", "file url here");
}
else{
audio.pause();
toggleIt = false;
$("#play").find("img").attr("src", "file url here");
}
})
edit: and here is a fiddle using wonderful place holder kittens. Yes, you should be grateful for my exquisite taste in placeholder pictures.

var audio = new Audio("audio.mp3");
$(".play").click(function () {
$(this).hide();
$(".pause").show();
audio.play();
})
$(".pause").click(function () {
audio.pause();
$(this).hide();
$(".play").show();
$(this).toggleClass(".play");
});
this is the simplest way. it would probably be better to do it with css psuedo classes, but i leave this pleasure to you if you care enough

You can create 2 diferents button and change de visibility
var audio = new Audio("audio.mp3");
$("#play").click(function () {
audio.play();
$("#play").hide();
$("#pause").show();
})
$("#pause").click(function () {
$("#pause").hide();
$("#play").show();
});

Set a variable then use a conditional to see if you should either play or pause the audio:
<div class="button"><img src="../images/play.gif"></img></div>
var play = true;
$(".button").click(function(){
if (play){
// Play
audio.play();
$(".button img").attr("src", "../images/pause.gif");
play = false;
} else {
// Pause
audio.pause();
$(".button img").attr("src", "../images/play.gif");
play = true;
}
});
Example

var audio = new Audio("audio.mp3");
$(".play").click(function () {
$(this).hide();
$(".pause").show();
audio.play();
})
$(".pause").click(function () {
audio.pause();
$(this).hide();
$(".play").show();
$(this).toggleClass(".play");
});