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@jermspeaks
Forked from nathansearles/isAutoplaySupported.js
Created October 5, 2017 18:37
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Test if HTML5 video autoplay is supported
// isAutoplaySupported(callback);
// Test if HTML5 video autoplay is supported
isAutoplaySupported = function(callback) {
// Is the callback a function?
if (typeof callback !== 'function') {
console.log('isAutoplaySupported: Callback must be a function!');
return false;
}
// Check if sessionStorage exist for autoplaySupported,
// if so we don't need to check for support again
if (!sessionStorage.autoplaySupported) {
// Create video element to test autoplay
var video = document.createElement('video');
video.autoplay = true;
video.src = 'data:video/mp4;base64,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';
video.load();
video.style.display = 'none';
video.playing = false;
video.play();
// Check if video plays
video.onplay = function() {
this.playing = true;
};
// Video has loaded, check autoplay support
video.oncanplay = function() {
if (video.playing) {
sessionStorage.autoplaySupported = 'true';
callback(true);
} else {
sessionStorage.autoplaySupported = 'false';
callback(false);
}
};
} else {
// We've already tested for support
// use sessionStorage.autoplaySupported
if (sessionStorage.autoplaySupported === 'true') {
callback(true);
} else {
callback(false);
}
}
}
// Usage: isAutoplaySupported(callback);
// Using a callback assures that support
// has been properly checked
isAutoplaySupported(function(supported) {
if (supported) {
// HTML5 Video Autoplay Supported!
console.log('HTML5 Video Autoplay Supported!');
} else {
// HTML5 Video Autoplay Not Supported :(
console.log('HTML5 Video Autoplay Not Supported :(');
}
});
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