In JavaScript, you can use the style object attribute to change the div background color. The syntax format is "element object.style.background="color value"". The Style object represents a single style declaration and can be accessed from the document or element to which the style is applied.
The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.
Idea: Clicking on a div changes the background color by judging the number of clicks to change the background color. It mainly uses the addition and accumulation of numbers.
Code;
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>js实现点击div改变背景颜色</title>
<style>
div{
background: red;
width: 100px;
height: 100px;
}
</style>
</head>
<body>
<div></div>
</body>
<script type="text/javascript">
var div=document.getElementsByTagName("div")[0];/*通过标签名div组*/
var count=0;/*计数，从0开始，每点击一下加一*/
div.onclick = function () { /*给div绑定点击函数*/
count ++;
/*判断点击的次数，来改变背景颜色*/
if(count % 3==1){
this.style.background="yellow"
}else if(count % 3==0){
this.style.background="red"
}else {
this.style.backgroundColor="#ff9000"
}
}
</script>
</html>[Recommended learning: javascript advanced tutorial]
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