JS实现全屏预览F11功能的教程_F11 - 专业站长和开发者的学习网站

今天小编给大家带来JS实现全屏预览F11功能的教程

废话不多说，直接上代码：

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

举个小小例子，随便来一个按钮试试，按钮上在来个点击事件切换。

<html id="Content">
  <body>
    <ul>
      <li>
        <a id="BtnFullOpen" href="javascript:void(0);" rel="external nofollow" rel="external nofollow" title="按“F11”进入全屏模式">
          <i class="ace-icon fa fa-arrows-alt"></i>全屏查看
        </a>
        <a id="BtnFullQuite" href="javascript:void(0);" rel="external nofollow" rel="external nofollow" title="按“F11”关闭全屏模式" style="display:none;">
          <i class="ace-icon fa fa-arrows-alt"></i>全屏关闭
        </a>
      </li>
      <li>2</li>
      <li>3</li>
      <li>5</li>
    </ul>
  </body>
</html>

记得一定要加上调用代码，调用代码，调用代码，说三遍...

JS调用代码

var oBtnFullOpen = document.getElementById('BtnFullOpen');
var oContent = document.getElementById('Content');
oBtnFullOpen.onclick = function() {
  fullScreen(oContent);
  oBtnFullQuite.setAttribute("style", "display:block");
  oBtnFullOpen.setAttribute("style", "display:none");
}
var oBtnFullQuite = document.getElementById('BtnFullQuite');
oBtnFullQuite.onclick = function() {
  exitFullScreen(oContent);
  oBtnFullQuite.setAttribute("style", "display:none");
  oBtnFullOpen.setAttribute("style", "display:block");
};