根据输入的数据渲染柱形图
背景：根据不同季度的销售额，生成对应的柱形图，直观的看出差异
效果：
代码
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<html lang="en"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title><style>* {margin: 0;padding: 0;}body {background-color: #0c143d;}.box {display: flex;justify-content: space-around;align-items: flex-end;width: 800px;min-height: 300px;border-left: 1px solid #4b578f;border-bottom: 1px solid #4b578f;margin: 0 auto;padding-top: 50px;text-align: center;color: #9799ab;}.box>div {position: relative;display: flex;flex-direction: column;justify-content: space-between;width: 40px;height: 0;background: linear-gradient(#3c99ff, #4489d0, #2283e4);cursor: pointer;border-radius: 8px 8px 0 0;transition: all .2s;}.box>div:hover {animation: bg .5s alternate infinite;}@keyframes bg {to {box-shadow: 0 5px 29px rgb(53 111 226 / 88%);background: linear-gradient(#3c99ff, #68aff6, #2283e4);}}.box>div::after {content: '';position: absolute;bottom: 0;left: 50%;width: 2px;height: 10px;background-color: #4b578f;transform: translate(-50%, 100%);}.box div span {width: 60px;margin: -30px 0 -5px -6px;}.box div h4 {width: 70px;margin: 0 0 -35px -10px;}.title {margin-top: 50px;text-align: center;color: #9799ab;}</style>
</head><body><h3 class="title">2099年季度销售数额（单位万）</h3><!-- <div class="box"><div style="height: 123px;" title="第1季度-123万"><span>123万</span><h4>第1季度</h4></div><div style="height: 156px;" title="第2季度-156万"><span>156万</span><h4>第2季度</h4></div><div style="height: 120px;" title="第3季度-120万"><span>120万</span><h4>第3季度</h4></div><div style="height: 210px;" title="第4季度-210万"><span>210万</span><h4>第4季度</h4></div></div> --><script>// 功能1： 用户输入4次，并且把数据存放到数组里面// 1.1 声明一个空的数组let arr = []// 1.2 利用循环的形式让用户输入4次，并且把数据追加给数组for (let i = 1; i <= 4; i++) {let num = +prompt(`请您输入第${i}季度的销售额`)arr.push(num)}console.log(arr)// 功能2：根据数组生成柱形图// 2.1 声明一个空的字符串 strlet str = ''// 2.2 利用循环拼接字符串，生成多个柱子for (let i = 0; i < arr.length; i++) {str += `<div style="height: ${arr[i]}px;" title="第${i + 1}季度-${arr[i]}万"><span>${arr[i]}万</span><h4>第${i + 1}季度</h4></div>`}console.log(str)// 2.3 把生成的柱子放到box盒子里面进行渲染document.write(`<div class="box">${str}</div> `)</script>
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