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javascript implements a method to dynamically change the size of layers

  • 2020-06-12 08:33:07
  • OfStack

This article illustrates how javascript can dynamically change the size of layers. Share to everybody for everybody reference. Specific implementation methods are as follows: 


<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title> Dynamically sets the size of the layer </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 Cannot set class, Otherwise, use divMain.style.width Of time and space 
  // Can only be set within elements 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) {
    // Clearance timer 
    clearInterval(setIntervalID);
    return;
  }
  divMain.style.width = oldWidth + "px";
  divMain.style.height = oldHeight + "px";
}
</script>
</head>
<body>
<input type="button" value=" Enlarge layer " onclick="ZoomDiv()" />
<input type="button" value=" Dynamic amplification layer " onclick="ShowDiv()" />
<div id="divMain" class="divMain">
 case : Follow the mouse to fly the picture. prompt : Mouse movement of events when onmousemove, through 
window.event the clientX,clientY Property gets the mouse position 
</div>
<!-- I can't set it here class, Otherwise, use divMain.style.width Of time and space -->
<div id="divMain2" style="width:10px;height:100px;background-color:Red;">
 case : Follow the mouse to fly the picture. prompt : Mouse movement of events when onmousemove, through 
window.event the clientX,clientY Property gets the mouse position 
</div>
</body>
</html>

Hopefully, this article has been helpful in your javascript programming.

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