【JavaScript】js代码实现全屏以及取消全屏

代码如下，直接拷贝即可用

$("#button").on("click", function toggleFull() {
    if ((document.fullScreenElement !== undefined && document.fullScreenElement === null)
        || (document.msFullscreenElement !== undefined && document.msFullscreenElement === null)
        || (document.mozFullScreen !== undefined && !document.mozFullScreen)
        || (document.webkitIsFullScreen !== undefined && !document.webkitIsFullScreen)) {
        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.documentElement.msRequestFullscreen) {
            document.documentElement.msRequestFullscreen();
        }
    } else {
        if (document.cancelFullScreen) {
            document.cancelFullScreen();
        } else if (document.mozCancelFullScreen) {
            document.mozCancelFullScreen();
        } else if (document.webkitCancelFullScreen) {
            document.webkitCancelFullScreen();
        } else if (document.msExitFullscreen) {
            document.msExitFullscreen();
        }
    }
});