效果就是实现按下按钮时, 网页铺满整个电脑屏幕1 html 代码<input value="全屏" type='button' />2 js代码function toggleFullScreen() { if (!document.fullscreenElement && // alternative standard method !document.mozFullScreenElement && !document.webkitFullscreenElement) {// current working methods if (document.documentElement.requestFullscreen) { document.documentElement.requestFullscreen(); } else if (document.documentElement.mozRequestFullScreen) { document.documentElement.mozRequestFullScreen(); } else if (document.documentElement.webkitRequestFullscreen) { document.documentElement.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT); } } else { if (document.cancelFullScreen) { document.cancelFullScreen(); } else if (document.mozCancelFullScreen) { document.mozCancelFullScreen(); } else if (document.webkitCancelFullScreen) { document.webkitCancelFullScreen(); } }}document.getElementsByTagName('input')[0].addEventListener('click', toggleFullScreen);