html5移动端价格输入键盘的实现

<div class="main">    <div id="show-price">    </div>    <div class="keyboard">        <div>1</div>        <div>2</div>        <div>3</div>        <div>4</div>        <div>5</div>        <div>6</div>        <div>7</div>        <div>8</div>        <div>9</div>        <div>.</div>        <div>0</div>        <div>删除</div>    </div></div>

.keyboard {    position: fixed;    bottom: 0;    width: 100%;    height: 240px;    display: flex;    flex-wrap: wrap;}.keyboard div {    width: 30%;    height: 50px;    margin: 5px;    text-align: center;    line-height: 50px;    border-radius: 5px;    background: #eee;}

<script src="../js/jquery-3.4.1.min.js"></script><script>    window.onload = function () {        let key = $('.keyboard div');        let keyStr = ''        key.click(function () {            let str = ''            let eleStr = $(this).html() == '删除' ? '' : $(this).html(); // 是否删除            if(keyStr.length <= 0 && eleStr == '0') return; // 首位不能为0            keyStr = keyStr + eleStr; // 拼接点击的数字            if(eleStr == '') keyStr = keyStr.substr(0, keyStr.length - 1); // 删除            for (let i = 0; i < keyStr.length; i++) { // 遍历                if (keyStr[i] == '.') { // 判断是否为.                    if (str.indexOf('.') == -1) str = str + keyStr[i]; // 是.并且其中不存在                } else str = str + keyStr[i]; // 不是.就拼接            }            showPrice($('#show-price'), str); // 渲染        })        function showPrice(ele, str) {            let htmlStr = ''            for (let i = 0; i < str.length; i++) {                htmlStr = htmlStr + `<span>${str[i]}</span>`            }            ele.html(htmlStr);        }    </script>