js全屏指定元素全屏 requestFullscreen exitFullscreen |
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1、全屏模式:requestFullscreen()方法用于发出异步请求实现元素全屏显示 const openFullscreen = () => { /* 获取()元素以全屏显示页面 */ const full = document.getElementById('content') if (full.RequestFullScreen) { full.RequestFullScreen() //兼容Firefox } else if (full.mozRequestFullScreen) { full.mozRequestFullScreen() //兼容Chrome, Safari and Opera等 } else if (full.webkitRequestFullScreen) { full.webkitRequestFullScreen() //兼容IE/Edge } else if (full.msRequestFullscreen) { full.msRequestFullscreen() } }2、取消全屏模式:exitFullscreen()方法退出全屏模式 const exitFullscreen = () => { function exitFullscreen() { if(document.exitFullScreen) { document.exitFullScreen(); //兼容Firefox } else if(document.mozCancelFullScreen) { document.mozCancelFullScreen(); //兼容Chrome, Safari and Opera等 } else if(document.webkitExitFullscreen) { document.webkitExitFullscreen(); //兼容IE/Edge } else if(element.msExitFullscreen) { element.msExitFullscreen(); } } }3、返回当前页面以全屏显示的element节点,如果没有使用全屏模式,则返回null const getFullscreenElement = () => { return ( document.fullscreenElement || document.mozFullScreenElement || document.msFullScreenElement || document.webkitFullscreenElement||null ); }4、判断当前是否全屏,fullscreen已废弃,可以通过检查document.fullscreenelement是否为null来确定文档上是否启用全屏模式 const isFullScreen = () => { return !! ( document.fullscreen || document.mozFullScreen || document.webkitIsFullScreen || document.webkitFullScreen || document.msFullScreen ); }5、返回一个布尔值,表明浏览器是否支持全屏模式。全屏模式只在那些不包含窗口化的插件的页面中可用.对于一个元素中的页面,则它必需拥有mozallowfullscreen属性 const isFullscreenEnabled = () => { return ( document.fullscreenEnabled || document.mozFullScreenEnabled || document.webkitFullscreenEnabled || document.msFullscreenEnabled ); }requestFullscreen()方法只能在用户交互或者设备方向改变的时候调用,否则将会失败,比如:在onload事件中不能触发 路由页面跳转需先退出全屏模式 进入全屏的元素,将脱离其父元素,所以可能导致之前某些css的失效,可以使用 :full-screen伪类解决 为元素添加全屏时的样式(使用时为了兼容注意添加-webkit、-moz或-ms前缀) 一个元素A全屏后,其子元素要再全屏,需先让元素A退出全屏 原文链接:https://blog.csdn.net/xiaoxia188/article/details/116996656 |
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