js 实现全屏预览（F11功能）--转

可参考文档：http://blog.csdn.net/tywali/article/details/8623938

js代码

function fullScreen(el) {  
    var rfs = el.requestFullScreen || el.webkitRequestFullScreen || el.mozRequestFullScreen || el.msRequestFullScreen,  
        wscript;  
   
    if(typeof rfs != "undefined" && rfs) {  
        rfs.call(el);  
        return;  
    }  
   
    if(typeof window.ActiveXObject != "undefined") {  
        wscript = new ActiveXObject("WScript.Shell");  
        if(wscript) {  
            wscript.SendKeys("{F11}");  
        }  
    }  
}  
  
function exitFullScreen(el) {  
    var el= document,  
        cfs = el.cancelFullScreen || el.webkitCancelFullScreen || el.mozCancelFullScreen || el.exitFullScreen,  
        wscript;  
   
    if (typeof cfs != "undefined" && cfs) {  
      cfs.call(el);  
      return;  
    }  
   
    if (typeof window.ActiveXObject != "undefined") {  
        wscript = new ActiveXObject("WScript.Shell");  
        if (wscript != null) {  
            wscript.SendKeys("{F11}");  
        }  
  }  
}  

html 代码

<button id='btn'>全屏按钮</button>  
        <div id="content" style="background:yellow;500px;height:500px;">sljfsdlfj  
            <div id="quite" class="btn">退出全屏</div>  
        </div>  

调用

var btn = document.getElementById('btn');  
        var content = document.getElementById('content');  
        btn.onclick = function(){  
            fullScreen(content);  
        }  
        var quite = document.getElementById('quite');  
        quite.onclick = function(){  
            exitFullScreen();  
        }

　　不仅可以实现整个document 全屏预览 还能实现特定的div来进行全屏预览

转：http://blog.csdn.net/wu595679200/article/details/51195142