全屏API；浏览器认为我不是以用户手势开始的
Fullscreen API; browser thinks I don't start with a user gesture
我正在使用 HTML5 video 元素开发自定义视频播放器，但我无法让全屏按钮与 Fullscreen API 一起使用。
当我点击它时，我收到错误信息：
Failed to execute 'requestFullscreen' on 'Element': API can only be initiated by a user gesture.
但是，我正在使用用户手势发起对 requestFullscreen 的调用...除非我误解了什么构成了用户手势。单击元素是一种用户手势，不是吗？
我知道 SO 上有很多关于全屏的问题 API，但看起来很多人想要在没有用户交互的情况下启动全屏模式。
我做错了什么？
此代码有一个 pen，但我可能会在找到解决方案后更改它。我不会在这里更改代码。
代码如下：
/* Get our elements. */
const player = document.querySelector('.player');
const video = player.querySelector('.viewer');
const progress = player.querySelector('.progress');
const progressBar = player.querySelector('.progress__filled');
const toggle = player.querySelector('.toggle');
const skipButtons = player.querySelectorAll('[data-skip]');
const ranges = player.querySelectorAll('.player__slider');
const fullscreen = player.querySelector('.fullscreen');
let isFullScreen = false;
/* Build our functions */
function togglePlay() {
const action = video.paused ? 'play' : 'pause';
video[action]();
}
function updatePlayIcon() {
toggle.classList.toggle('playing');
}
function skip() {
video.currentTime += parseFloat(this.dataset.skip);
}
function handleRangeUpdate() {
video[this.name] = this.value;
}
function handleProgress() {
const percent = (video.currentTime / video.duration) * 100;
progressBar.style.flexBasis = percent + '%';
}
function scrub(e) {
const seconds = (e.offsetX / progress.offsetWidth) * video.duration;
video.currentTime = seconds;
}
function toggleFullScreen() {
if (isFullScreen) {
console.log("exiting fullscreen");
if (document.exitFullscreen) {
document.exitFullscreen();
} else if (document.mozCancelFullScreen) {
document.mozCancelFullScreen();
} else if (document.webkitCancelFullScreen) {
document.webkitCancelFullScreen();
} else if (document.msExitFullscreen) {
document.msExitFullscreen();
}
console.log('removing fullscreen class');
player.classList.remove('fullscreen');
} else {
console.log("entering fullscreen");
if (player.requestFullscreen) {
console.log('requestFullScreen');
player.requestFullscreen(); // standard
} else if (player.webkitRequestFullscreen) {
console.log('webkitRequestFullscreen');
player.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT);
} else if (player.mozRequestFullScreen) {
console.log('mozRequestFullScreen');
player.mozRequestFullScreen();
} else if (player.msRequestFullscreen) {
console.log('msRequestFullscreen');
player.msRequestFullscreen();
} else {
console.error('Unable to find a fullscreen request method');
}
console.log('adding fullscreen class');
player.classList.add('fullscreen');
}
isFullScreen = !isFullScreen;
}
/* Hook up the event listeners */
video.addEventListener('click', togglePlay);
toggle.addEventListener('click', togglePlay);
video.addEventListener('play', updatePlayIcon);
video.addEventListener('pause', updatePlayIcon);
video.addEventListener('timeupdate', handleProgress);
skipButtons.forEach(button => button.addEventListener('click', skip));
ranges.forEach(range => range.addEventListener('change', handleRangeUpdate));
ranges.forEach(range => range.addEventListener('mousemove', handleRangeUpdate));
let mousedown = false;
progress.addEventListener('click', scrub);
progress.addEventListener('mousemove', (e) => mousedown && scrub(e));
progress.addEventListener('mousedown', () => mousedown = true);
progress.addEventListener('mouseup', () => mousedown = false);
fullscreen.addEventListener('click', toggleFullScreen);
document.addEventListener('fullscreenchange', toggleFullScreen);
document.addEventListener('mozfullscreenchange', toggleFullScreen);
document.addEventListener('webkitfullscreenchange', toggleFullScreen);
document.addEventListener('msfullscreenchange', toggleFullScreen);
html {
box-sizing: border-box;
}
*,
*:before,
*:after {
box-sizing: inherit;
}
html, body {
height: 100%;
}
body {
margin: 0;
display: flex;
background: #7A419B;
background: linear-gradient(135deg, #7c1599 0%, #921099 48%, #7e4ae8 100%);
background-size: cover;
align-items: center;
justify-content: center;
}
.player {
max-width: 750px;
max-height: 100%;
border: 5px solid rgba(0, 0, 0, 0.2);
box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
position: relative;
font-size: 0;
overflow: hidden;
}
button.toggle.fullscreen::before {
font-family: "FontAwesome";
content: "\f065";
}
.player.fullscreen .player__controls .toggle.fullscreen::before {
content: "\f066";
}
/* This css is only applied when fullscreen is active. */
.player.fullscreen {
max-width: none;
max-height: none;
width: 100%;
height: 100%;
background-color: black;
}
.player.fullscreen video {
width: 100%;
}
.player__video {
max-width: 100%;
max-height: 100%;
}
.player__button {
background: none;
border: 0;
line-height: 1;
color: white;
text-align: center;
outline: 0;
padding: 0;
cursor: pointer;
max-width: 50px;
}
.player__button:focus {
border-color: #ffc600;
}
.toggle::before {
font-family: "FontAwesome";
content: "\f04b";
}
.toggle.playing::before {
font-family: "FontAwesome";
content: "\f04c";
}
.player__slider {
width: 10px;
height: 30px;
}
.player__controls {
display: flex;
position: absolute;
bottom: 0;
width: 100%;
transform: translateY(100%) translateY(-5px);
transition: all .3s;
flex-wrap: wrap;
background: rgba(0, 0, 0, 0.1);
}
.player:hover .player__controls {
transform: translateY(0);
}
.player:hover .progress {
height: 15px;
}
.player__controls > * {
flex: 1;
}
.progress {
flex: 10;
position: relative;
display: flex;
flex-basis: 100%;
height: 5px;
transition: height 0.3s;
background: rgba(0, 0, 0, 0.5);
cursor: ew-resize;
}
.progress__filled {
width: 50%;
background: #ffc600;
flex: 0;
flex-basis: 0%;
}
.player__slider {
position: relative;
}
.player__slider::after {
content: attr(name);
position: absolute;
top: -2px;
text-shadow: 1px 1px 1px 0 rgba(0,0,0,0.5);
font-size: 0.8em;
}
/* unholy css to style input type="range" */
input[type=range] {
-webkit-appearance: none;
background: transparent;
width: 100%;
margin: 0 5px;
}
input[type=range]:focus {
outline: none;
}
input[type=range]::-webkit-slider-runnable-track {
width: 100%;
height: 8.4px;
cursor: pointer;
box-shadow: 1px 1px 1px rgba(0, 0, 0, 0), 0 0 1px rgba(13, 13, 13, 0);
background: rgba(255, 255, 255, 0.8);
border-radius: 1.3px;
border: 0.2px solid rgba(1, 1, 1, 0);
}
input[type=range]::-webkit-slider-thumb {
box-shadow: 0 0 0 rgba(0, 0, 0, 0), 0 0 0 rgba(13, 13, 13, 0);
height: 15px;
width: 15px;
border-radius: 50px;
background: #ffc600;
cursor: pointer;
-webkit-appearance: none;
margin-top: -3.5px;
box-shadow: 0 0 2px rgba(0, 0, 0, 0.2);
}
input[type=range]:focus::-wefbkit-slider-runnable-track {
background: #bada55;
}
input[type=range]::-moz-range-track {
width: 100%;
height: 8.4px;
cursor: pointer;
box-shadow: 1px 1px 1px rgba(0, 0, 0, 0), 0 0 1px rgba(13, 13, 13, 0);
background: #ffffff;
border-radius: 1.3px;
border: 0.2px solid rgba(1, 1, 1, 0);
}
input[type=range]::-moz-range-thumb {
box-shadow: 0 0 0 rgba(0, 0, 0, 0), 0 0 0 rgba(13, 13, 13, 0);
height: 15px;
width: 15px;
border-radius: 50px;
background: #ffc600;
cursor: pointer;
}
<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet"/>
<div class="player">
<video class="player__video viewer" src="https://player.vimeo.com/external/194837908.sd.mp4?s=c350076905b78c67f74d7ee39fdb4fef01d12420&profile_id=164"></video>
<div class="player__controls">
<div class="progress">
<div class="progress__filled"></div>
</div>
<button class="player__button toggle" title="Toggle Play"></button>
<input type="range" name="volume" class="player__slider" min="0" max="1" step="0.05" value="1">
<input type="range" name="playbackRate" class="player__slider" min="0.5" max="2" step="0.1" value="1">
<button data-skip="-10" class="player__button"><i class="fa fa-step-backward"></i> 10s</button>
<button data-skip="25" class="player__button">25s <i class="fa fa-step-forward"></i></button>
<button class="player__button toggle fullscreen"></button>
</div>
</div>
我不是专家...只是有空闲时间的人:)
你的 const player = document.querySelector('.player'); 是一个元素，尝试 player.requestFullscreen(); 会给你错误。修改您的代码，以便 api 调用可能来自 player.onclick().requestFullscreen(); 之类的东西。对不起，如果我没有那么有用。
问题是当我点击全屏按钮时，我的 toggleFullScreen 函数被调用了两次。我在回复 Bibek Khadka 的回答时看到了它。第一次是我单击按钮，第二次是 full-screen 模式因为这些事件侦听器而实际改变时...
document.addEventListener('fullscreenchange', toggleFullScreen);
document.addEventListener('mozfullscreenchange', toggleFullScreen);
document.addEventListener('webkitfullscreenchange', toggleFullScreen);
document.addEventListener('msfullscreenchange', toggleFullScreen);
它会进入全屏模式，然后很快返回，以至于我没有看到变化。我相信第二次在没有用户手势的情况下调用全屏 API 方法（技术上），这就是我收到错误消息的原因。
解决方案（至少现在）是创建一个单独的函数来更改 类 和我用来跟踪我是否处于全屏模式的变量 ...
function toggleFullScreenClasses() {
player.classList.toggle('fullscreen');
isFullScreen = !isFullScreen;
}
...然后我不使用它来处理按钮上的点击。我只用它来处理实际的 fullscreenchange 事件...
document.addEventListener('fullscreenchange', toggleFullScreenClasses);
document.addEventListener('mozfullscreenchange', toggleFullScreenClasses);
document.addEventListener('webkitfullscreenchange', toggleFullScreenClasses);
document.addEventListener('msfullscreenchange', toggleFullScreenClasses);
我知道这很草率，但它暂时解决了问题。我之前尝试使用 :fullscreen pseudo-class，但我遇到了一些困难，因此我切换到更熟悉的切换 类 和变量的方法。我需要再看看那个。
我正在使用 HTML5 video 元素开发自定义视频播放器，但我无法让全屏按钮与 Fullscreen API 一起使用。
当我点击它时，我收到错误信息：
Failed to execute 'requestFullscreen' on 'Element': API can only be initiated by a user gesture.
但是，我正在使用用户手势发起对 requestFullscreen 的调用...除非我误解了什么构成了用户手势。单击元素是一种用户手势，不是吗？
我知道 SO 上有很多关于全屏的问题 API，但看起来很多人想要在没有用户交互的情况下启动全屏模式。
我做错了什么？
此代码有一个 pen，但我可能会在找到解决方案后更改它。我不会在这里更改代码。
代码如下：
/* Get our elements. */
const player = document.querySelector('.player');
const video = player.querySelector('.viewer');
const progress = player.querySelector('.progress');
const progressBar = player.querySelector('.progress__filled');
const toggle = player.querySelector('.toggle');
const skipButtons = player.querySelectorAll('[data-skip]');
const ranges = player.querySelectorAll('.player__slider');
const fullscreen = player.querySelector('.fullscreen');
let isFullScreen = false;
/* Build our functions */
function togglePlay() {
const action = video.paused ? 'play' : 'pause';
video[action]();
}
function updatePlayIcon() {
toggle.classList.toggle('playing');
}
function skip() {
video.currentTime += parseFloat(this.dataset.skip);
}
function handleRangeUpdate() {
video[this.name] = this.value;
}
function handleProgress() {
const percent = (video.currentTime / video.duration) * 100;
progressBar.style.flexBasis = percent + '%';
}
function scrub(e) {
const seconds = (e.offsetX / progress.offsetWidth) * video.duration;
video.currentTime = seconds;
}
function toggleFullScreen() {
if (isFullScreen) {
console.log("exiting fullscreen");
if (document.exitFullscreen) {
document.exitFullscreen();
} else if (document.mozCancelFullScreen) {
document.mozCancelFullScreen();
} else if (document.webkitCancelFullScreen) {
document.webkitCancelFullScreen();
} else if (document.msExitFullscreen) {
document.msExitFullscreen();
}
console.log('removing fullscreen class');
player.classList.remove('fullscreen');
} else {
console.log("entering fullscreen");
if (player.requestFullscreen) {
console.log('requestFullScreen');
player.requestFullscreen(); // standard
} else if (player.webkitRequestFullscreen) {
console.log('webkitRequestFullscreen');
player.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT);
} else if (player.mozRequestFullScreen) {
console.log('mozRequestFullScreen');
player.mozRequestFullScreen();
} else if (player.msRequestFullscreen) {
console.log('msRequestFullscreen');
player.msRequestFullscreen();
} else {
console.error('Unable to find a fullscreen request method');
}
console.log('adding fullscreen class');
player.classList.add('fullscreen');
}
isFullScreen = !isFullScreen;
}
/* Hook up the event listeners */
video.addEventListener('click', togglePlay);
toggle.addEventListener('click', togglePlay);
video.addEventListener('play', updatePlayIcon);
video.addEventListener('pause', updatePlayIcon);
video.addEventListener('timeupdate', handleProgress);
skipButtons.forEach(button => button.addEventListener('click', skip));
ranges.forEach(range => range.addEventListener('change', handleRangeUpdate));
ranges.forEach(range => range.addEventListener('mousemove', handleRangeUpdate));
let mousedown = false;
progress.addEventListener('click', scrub);
progress.addEventListener('mousemove', (e) => mousedown && scrub(e));
progress.addEventListener('mousedown', () => mousedown = true);
progress.addEventListener('mouseup', () => mousedown = false);
fullscreen.addEventListener('click', toggleFullScreen);
document.addEventListener('fullscreenchange', toggleFullScreen);
document.addEventListener('mozfullscreenchange', toggleFullScreen);
document.addEventListener('webkitfullscreenchange', toggleFullScreen);
document.addEventListener('msfullscreenchange', toggleFullScreen);
html {
box-sizing: border-box;
}
*,
*:before,
*:after {
box-sizing: inherit;
}
html, body {
height: 100%;
}
body {
margin: 0;
display: flex;
background: #7A419B;
background: linear-gradient(135deg, #7c1599 0%, #921099 48%, #7e4ae8 100%);
background-size: cover;
align-items: center;
justify-content: center;
}
.player {
max-width: 750px;
max-height: 100%;
border: 5px solid rgba(0, 0, 0, 0.2);
box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
position: relative;
font-size: 0;
overflow: hidden;
}
button.toggle.fullscreen::before {
font-family: "FontAwesome";
content: "\f065";
}
.player.fullscreen .player__controls .toggle.fullscreen::before {
content: "\f066";
}
/* This css is only applied when fullscreen is active. */
.player.fullscreen {
max-width: none;
max-height: none;
width: 100%;
height: 100%;
background-color: black;
}
.player.fullscreen video {
width: 100%;
}
.player__video {
max-width: 100%;
max-height: 100%;
}
.player__button {
background: none;
border: 0;
line-height: 1;
color: white;
text-align: center;
outline: 0;
padding: 0;
cursor: pointer;
max-width: 50px;
}
.player__button:focus {
border-color: #ffc600;
}
.toggle::before {
font-family: "FontAwesome";
content: "\f04b";
}
.toggle.playing::before {
font-family: "FontAwesome";
content: "\f04c";
}
.player__slider {
width: 10px;
height: 30px;
}
.player__controls {
display: flex;
position: absolute;
bottom: 0;
width: 100%;
transform: translateY(100%) translateY(-5px);
transition: all .3s;
flex-wrap: wrap;
background: rgba(0, 0, 0, 0.1);
}
.player:hover .player__controls {
transform: translateY(0);
}
.player:hover .progress {
height: 15px;
}
.player__controls > * {
flex: 1;
}
.progress {
flex: 10;
position: relative;
display: flex;
flex-basis: 100%;
height: 5px;
transition: height 0.3s;
background: rgba(0, 0, 0, 0.5);
cursor: ew-resize;
}
.progress__filled {
width: 50%;
background: #ffc600;
flex: 0;
flex-basis: 0%;
}
.player__slider {
position: relative;
}
.player__slider::after {
content: attr(name);
position: absolute;
top: -2px;
text-shadow: 1px 1px 1px 0 rgba(0,0,0,0.5);
font-size: 0.8em;
}
/* unholy css to style input type="range" */
input[type=range] {
-webkit-appearance: none;
background: transparent;
width: 100%;
margin: 0 5px;
}
input[type=range]:focus {
outline: none;
}
input[type=range]::-webkit-slider-runnable-track {
width: 100%;
height: 8.4px;
cursor: pointer;
box-shadow: 1px 1px 1px rgba(0, 0, 0, 0), 0 0 1px rgba(13, 13, 13, 0);
background: rgba(255, 255, 255, 0.8);
border-radius: 1.3px;
border: 0.2px solid rgba(1, 1, 1, 0);
}
input[type=range]::-webkit-slider-thumb {
box-shadow: 0 0 0 rgba(0, 0, 0, 0), 0 0 0 rgba(13, 13, 13, 0);
height: 15px;
width: 15px;
border-radius: 50px;
background: #ffc600;
cursor: pointer;
-webkit-appearance: none;
margin-top: -3.5px;
box-shadow: 0 0 2px rgba(0, 0, 0, 0.2);
}
input[type=range]:focus::-wefbkit-slider-runnable-track {
background: #bada55;
}
input[type=range]::-moz-range-track {
width: 100%;
height: 8.4px;
cursor: pointer;
box-shadow: 1px 1px 1px rgba(0, 0, 0, 0), 0 0 1px rgba(13, 13, 13, 0);
background: #ffffff;
border-radius: 1.3px;
border: 0.2px solid rgba(1, 1, 1, 0);
}
input[type=range]::-moz-range-thumb {
box-shadow: 0 0 0 rgba(0, 0, 0, 0), 0 0 0 rgba(13, 13, 13, 0);
height: 15px;
width: 15px;
border-radius: 50px;
background: #ffc600;
cursor: pointer;
}
<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet"/>
<div class="player">
<video class="player__video viewer" src="https://player.vimeo.com/external/194837908.sd.mp4?s=c350076905b78c67f74d7ee39fdb4fef01d12420&profile_id=164"></video>
<div class="player__controls">
<div class="progress">
<div class="progress__filled"></div>
</div>
<button class="player__button toggle" title="Toggle Play"></button>
<input type="range" name="volume" class="player__slider" min="0" max="1" step="0.05" value="1">
<input type="range" name="playbackRate" class="player__slider" min="0.5" max="2" step="0.1" value="1">
<button data-skip="-10" class="player__button"><i class="fa fa-step-backward"></i> 10s</button>
<button data-skip="25" class="player__button">25s <i class="fa fa-step-forward"></i></button>
<button class="player__button toggle fullscreen"></button>
</div>
</div>
我不是专家...只是有空闲时间的人:)
你的 const player = document.querySelector('.player'); 是一个元素，尝试 player.requestFullscreen(); 会给你错误。修改您的代码，以便 api 调用可能来自 player.onclick().requestFullscreen(); 之类的东西。对不起，如果我没有那么有用。
问题是当我点击全屏按钮时，我的 toggleFullScreen 函数被调用了两次。我在回复 Bibek Khadka 的回答时看到了它。第一次是我单击按钮，第二次是 full-screen 模式因为这些事件侦听器而实际改变时...
document.addEventListener('fullscreenchange', toggleFullScreen);
document.addEventListener('mozfullscreenchange', toggleFullScreen);
document.addEventListener('webkitfullscreenchange', toggleFullScreen);
document.addEventListener('msfullscreenchange', toggleFullScreen);
它会进入全屏模式，然后很快返回，以至于我没有看到变化。我相信第二次在没有用户手势的情况下调用全屏 API 方法（技术上），这就是我收到错误消息的原因。
解决方案（至少现在）是创建一个单独的函数来更改 类 和我用来跟踪我是否处于全屏模式的变量 ...
function toggleFullScreenClasses() {
player.classList.toggle('fullscreen');
isFullScreen = !isFullScreen;
}
...然后我不使用它来处理按钮上的点击。我只用它来处理实际的 fullscreenchange 事件...
document.addEventListener('fullscreenchange', toggleFullScreenClasses);
document.addEventListener('mozfullscreenchange', toggleFullScreenClasses);
document.addEventListener('webkitfullscreenchange', toggleFullScreenClasses);
document.addEventListener('msfullscreenchange', toggleFullScreenClasses);
我知道这很草率，但它暂时解决了问题。我之前尝试使用 :fullscreen pseudo-class，但我遇到了一些困难，因此我切换到更熟悉的切换 类 和变量的方法。我需要再看看那个。