问题描述：通过JavaScript将精灵图里面的小图标给遍历出来。
关键代码：
<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title><style>* {margin: 0;padding: 0;}#box {width: 230px;height: 270px;}#box ul {width: 100%;height: 100%;list-style: none;}#box li {width: 70px;height: 90px;display: block;float: left;text-align: center;}span {width: 24px;height: 44px;display: inline-block;}</style>
</head><body><div id="box"><ul></ul></div><script>var box = document.querySelector('#box');var arr = ['企业购', '礼品卡', '话费', '机票', '游戏', '白条', '火车票', '加油卡', '五金城', '电影票', '酒店', '云建站'];var html = '';for (var i = 0; i < arr.length; i++) {html +=`<li><span style='background:url(./sprite.png) no-repeat 0px -${i*43}px'></span><p>${arr[i]}</p></li>`}var ul = document.querySelector('ul');ul.innerHTML = html;</script>
</body></html> 效果图：
