点击图片改变背景的demo-学习第二天

实例代码：
<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>学习实验课</title>

</head>

<style>

body{

background: url(images/0.jpg)no-repeat;

background-size:cover;

}

.box{

    width:100%;

    height:300px;

}

.inner_image{

    width:1200px;

    height:300px;

    background:gray;

    opacity:0.7;

    margin:0 auto;

}

.inner_image img{

 position: relative;

 float:left;

 width:200px;

 height:200px;

 border:2px solid yellow;

 margin-left: 20px;

 left:40px;

 top:40px;

}

</style>

<body>

    <div class="box">

         <div class="inner_image">

                <img src="data:images/0.jpg" alt="" id="img1"/>

                <img src="data:images/1.jpg" alt="" id="img2"/>

                <img src="data:images/2.jpg" alt="" id="img3"/>

                <img src="data:images/3.jpg" alt="" id="img4" />

                <img src="data:images/4.jpg" alt="" id="img5" />

         </div>

    </div>

<script>

window.onload=function(){

 var image1=document.getElementById('img1');

 var image2=document.getElementById('img2');

 var image3=document.getElementById('img3');

 var image4=document.getElementById('img4');

 var image5=document.getElementById('img5'); 

 image1.onclick=function(){

  changeImg(0);

 }

  image2.onclick=function(){

  changeImg(1);

 }

  image3.onclick=function(){

  changeImg(2);

 }

  image4.onclick=function(){

  changeImg(3);

 }

  image5.onclick=function(){

  changeImg(4);

 }

 function changeImg(num){

     document.body.style.backgroundImage="url(images/"+num+".jpg)";

 }

}

</script>

</body>

</html>
巴特西

点击图片改变背景的demo-学习第二天

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