js设置ie8浏览器全屏

function enterFullScreen() {
    try {
        var wsh = new ActiveXObject('WScript.Shell');
        wsh.SendKeys('{F11}');
    } catch (e) {
        alert('此操作仅在IE浏览器下有效且可能需要调整浏览器安全设置');
    }
}

function enterFullScreenModern() {
    var elem = document.documentElement;
    if (elem.requestFullscreen) {
        elem.requestFullscreen();
    } else if (elem.mozRequestFullScreen) { // Firefox
        elem.mozRequestFullScreen();
    } else if (elem.webkitRequestFullscreen) { // Chrome, Safari and Opera
        elem.webkitRequestFullscreen();
    } else if (elem.msRequestFullscreen) { // IE/Edge
        elem.msRequestFullscreen();
    }
}