js之切换全屏和退出全屏实现

Posted 2022-09-16 youcong

应用场景:
比如很多网页游戏全屏之类的，或者是网上看小说等。

核心代码:

//控制全屏
function enterfullscreen()  //进入全屏
    $("#fullscreen").html("退出全屏");
    var docElm = document.documentElement;
    //W3C
    if(docElm.requestFullscreen) 
        docElm.requestFullscreen();
    
    //FireFox
    else if(docElm.mozRequestFullScreen) 
        docElm.mozRequestFullScreen();
    
    //Chrome等
    else if(docElm.webkitRequestFullScreen) 
        docElm.webkitRequestFullScreen();
    
    //IE11
    else if(elem.msRequestFullscreen) 
        elem.msRequestFullscreen();
    


function exitfullscreen()  //退出全屏
    $("#fullscreen").html("切换全屏");
    if(document.exitFullscreen) 
        document.exitFullscreen();
     else if(document.mozCancelFullScreen) 
        document.mozCancelFullScreen();
     else if(document.webkitCancelFullScreen) 
        document.webkitCancelFullScreen();
     else if(document.msExitFullscreen) 
        document.msExitFullscreen();
    


var a = 0;
$(‘#fullscreen‘).on(‘click‘, function() 
    a++;
    a % 2 == 1 ? enterfullscreen() : exitfullscreen();
)

前端代码:

<a type="button" id="fullscreen" class="btn btn-default visible-lg visible-md"><i class="fa fa-refresh" aria-hidden="true"></i> 切换全屏</a>