Javascript method to dynamically change layer size_javascript skills-JS Tutorial-php.cn

Javascript method to dynamically change layer size_javascript skills

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Release： 2016-05-16 15:59:15

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The example in this article describes the method of dynamically changing the layer size in JavaScript. Share it with everyone for your reference. The specific implementation method is as follows:

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>动态设置层的大小</title>
<style type="text/css">
.divMain
{
  width:10px;
  height:100px;
  border-style:solid;
  border-width:1px;
  border-color:Green;
  display:none;      
}
</style>
<script type="text/javascript">
var setIntervalID;
function ZoomDiv() {
  var divMain = document.getElementById("divMain");
  divMain.style.width = "200px";
  divMain.style.height = "200px";
}
function ShowDiv() {
  setIntervalID = setInterval("inc()", 100);
}
function inc() {
  var divMain = document.getElementById("divMain2");
  //div不能设置class,否则使用divMain.style.width取到的值时空的
  //只能在元素里设置style="width:10px;height:100px"
  var oldWidth = divMain.style.width;
  var oldHeight = divMain.style.height;
  oldWidth = parseInt(oldWidth);
  oldHeight = parseInt(oldHeight);
  oldWidth += 1;
  oldHeight += 1;
  if (oldWidth >= 200) {
    //清除定时器
    clearInterval(setIntervalID);
    return;
  }
  divMain.style.width = oldWidth + "px";
  divMain.style.height = oldHeight + "px";
}
</script>
</head>
<body>
<input type="button" value="放大层" onclick="ZoomDiv()" />
<input type="button" value="动态放大层" onclick="ShowDiv()" />
<div id="divMain" class="divMain">
案例:跟着鼠标飞的图片。提示:鼠标移动的事件时onmousemove,通过
window.event的clientX,clientY属性获得鼠标的位置
</div>
<!--这里不能设置class,否则使用divMain.style.width取到的值时空的-->
<div id="divMain2" style="width:10px;height:100px;background-color:Red;">
案例:跟着鼠标飞的图片。提示:鼠标移动的事件时onmousemove,通过
window.event的clientX,clientY属性获得鼠标的位置
</div>
</body>
</html>

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I hope this article will be helpful to everyone’s JavaScript programming design.