Change method: 1. Use the "getElementById()" statement to obtain the element object based on the id value; 2. Use "element object.setAttribute("style","width: width value; height: height value;" )" statement changes the width and height of the element.
The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.
In javascript, you can use the setAttribute() method to change the element width and height.
The setAttribute() method adds or assigns the specified attribute to the specified value. If this specified property already exists, the value is only set/changed.
Grammar:
元素对象.setAttribute('属性','属性值');
Implementation code:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<style type="text/css">
div{
border: 1px solid red;
}
</style>
</head>
<body>
<div id="div" style="width: 200px;height: 200px;"></div>
<script>
var div=document.getElementById("div");
div.setAttribute("style","width: 100px;height: 100px;");
</script>
</body>
</html>Rendering:
javascript advanced tutorial】
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