控制HTML元素的显示与隐藏——display和visibility

时间：2021-03-09 20:29:35

有些时候我们需要根据某些条件来控制Web页面中的HTML元素显示还是隐藏，可以通过display或visibility来实现。通过下面的例子了解display和visibility的区别，简单的例子代码如下：

<html>

<head>

<title>HTML元素的显示与隐藏控制</title>

<script type="text/javascript">

function showAndHidden1(){

  var div1=document.getElementById("div1");

  var div2=document.getElementById("div2");

  if(div1.style.display=='block') div1.style.display='none';

  else div1.style.display='block';

  if(div2.style.display=='block') div2.style.display='none';

  else div2.style.display='block';

}  

function showAndHidden2(){

  var div3=document.getElementById("div3");

  var div4=document.getElementById("div4");

  if(div3.style.visibility=='visible') div3.style.visibility='hidden';

  else div3.style.visibility='visible';

  if(div4.style.visibility=='visible') div4.style.visibility='hidden';

  else div4.style.visibility='visible';

}

</script>

</head>

<body>

<div>display：元素的位置不被占用</div>

<div id="div1" style="display:block;">DIV 1</div>

<div id="div2" style="display:none;">DIV 2</div>

<input type="button" onclick="showAndHidden1();" value="DIV切换" />

<hr>

<div>visibility：元素的位置仍被占用</div>

<div id="div3" style="visibility:visible;">DIV 3</div>

<div id="div4" style="visibility:hidden;">DIV 4</div>

<input type="button" onclick="showAndHidden2();" value="DIV切换" />

</body>

</html>

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