320 lines
9.0 KiB
HTML
320 lines
9.0 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title></title>
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<style>
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* {
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margin: 0;
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padding: 0;
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}
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body {
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width: 960px;
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margin: 20px auto;
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}
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#cart {
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margin: 0 auto;
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width: 850px;
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}
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#cart-header {
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height: 40px;
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background-color: lightgray;
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margin-bottom: 20px;
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}
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#cart-header div {
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line-height: 40px;
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}
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.left {
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float: left;
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}
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.right {
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float: right;
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}
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.w110 {
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width: 100px;
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}
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.ml10 {
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margin-left: 10px;
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}
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.w120 {
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width: 120px;
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}
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.w250 {
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width: 250px;
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}
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.center {
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text-align: center;
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}
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.w20 {
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width: 20px;
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}
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.w90 {
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width: 90px;
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}
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.clear {
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clear: both;
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}
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#cart-items>div {
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height: 100px;
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}
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#cart-items>div>div {
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line-height: 100px;
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}
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.w250 span {
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display: inline-block;
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font-size: 12px;
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line-height: 16px !important;
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}
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.single-item {
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border-bottom: 1px solid gray;
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}
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.small-button {
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display: inline-block;
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width: 20px;
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height: 20px;
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border: none;
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}
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.big-button {
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color: white;
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background-color: red;
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display: inline-block;
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width: 120px;
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height: 40px;
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border: none;
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font-size: 22px;
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}
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#totalCount, #totalPrice {
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color: red;
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}
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#totalPrice {
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font: bolder 20px Arial;
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display: inline-block;
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width: 150px;
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}
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#cart a {
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text-decoration: none;
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}
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#cart a:link, #cart a:visited, #cart a:active {
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color: gray;
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}
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</style>
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</head>
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<body>
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<div id="cart">
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<div id="cart-header">
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<div class="left w110 ml10">
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<input id="selectAll" type="checkbox">
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<label for="selectAll">全选</label>
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</div>
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<div class="left w250">商品</div>
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<div class="left w120 center">单价</div>
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<div class="left w120 center">数量</div>
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<div class="left w120 center">小计</div>
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<div class="left w120 center">操作</div>
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</div>
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<div id="cart-items">
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<div class="clear single-item">
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<div class="left w20 ml10">
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<input name="selectOne" type="checkbox">
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</div>
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<div class="left w90">
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<a href="">
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<img src="img/a1.jpg">
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</a>
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</div>
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<div class="left w250">
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<span>
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海澜之家/Heilan Home春装商务白衬衫男修身HNCAD3A067Y 漂白(69) 漂
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</span>
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</div>
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<div class="left w120 center">¥<span class="price">138.00</span></div>
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<div class="left w120 center">
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<button class="small-button">-</button>
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<input class="center count" type="text" size="2" value="1">
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<button class="small-button">+</button>
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</div>
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<div class="left w120 center">¥<span>138.00</span></div>
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<div class="left w120 center">
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<a href="javascript:void(0);">删除</a>
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</div>
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</div>
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<div class="clear single-item">
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<div class="left w20 ml10">
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<input name="selectOne" type="checkbox">
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</div>
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<div class="left w90">
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<a href="">
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<img src="img/a2.jpg">
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</a>
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</div>
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<div class="left w250">
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<span>
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HLA海澜之家长袖衬衫男牛津纺休闲干净透气HNEAJ1E048A浅灰
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</span>
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</div>
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<div class="left w120 center">¥<span class="price">128.00</span></div>
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<div class="left w120 center">
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<button class="small-button">-</button>
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<input class="center count" type="text" size="2" value="1">
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<button class="small-button">+</button>
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</div>
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<div class="left w120 center">¥<span>128.00</span></div>
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<div class="left w120 center">
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<a href="javascript:void(0);">删除</a>
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</div>
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</div>
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<div class="clear single-item">
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<div class="left w20 ml10">
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<input name="selectOne" type="checkbox">
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</div>
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<div class="left w90">
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<a href="">
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<img src="img/a3.jpg">
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</a>
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</div>
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<div class="left w250">
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<span>
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HLA海澜之家牛津纺清新休闲衬衫2018春季新品质感柔软长袖衬衫男
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</span>
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</div>
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<div class="left w120 center">¥<span class="price">99.00</span></div>
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<div class="left w120 center">
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<button class="small-button">-</button>
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<input class="center count" type="text" size="2" value="1">
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<button class="small-button">+</button>
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</div>
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<div class="left w120 center">¥99.00</div>
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<div class="left w120 center">
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<a href="javascript:void(0);">删除</a>
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</div>
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</div>
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</div>
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<div id="cart-footer">
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<div class="clear left">
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<a id="clearSelected" href="javascript:void(0);">删除选中商品</a>
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</div>
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<div class="right">
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<span>总共选中了<span id="totalCount">0</span>件商品</span>
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<span>总计: <span id="totalPrice">¥0.00</span></span>
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<button id="pay" class="big-button">去结算</button>
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</div>
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</div>
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</div>
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<script src="js/jquery.min.js"></script>
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<script>
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// jQuery中的$函数(jQuery)的作用
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// 1. 如果$函数的参数是一个函数那么该函数绑定文档加载完成后要执行的回调函数
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// 2. 如果$函数的参数是一个选择器字符串那么$函数会返回对应的元素(jQuery对象)
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// 3. 如果$函数的参数是一个标签字符串那么$函数会创建该元素并返回(jQuery对象)
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// 4. 如果$函数的参数是一个原生的JS元素对象那么$函数会将它转变成jQuery对象
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$(function() {
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// this到底是什么要看具体的上下文环境
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// 简单的说函数中的this指的是谁调用了这个函数或者谁引发了这个函数的执行
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$('#selectAll').on('change', function(evt) {
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// 获取事件源的两种方式: evt.target或者this
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// 这里拿到的是原生的JavaScript对象
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if ($(this).prop('checked')) {
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$('.single-item input[type="checkbox"]').prop('checked', true);
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calcTotal();
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} else {
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$('.single-item input[type="checkbox"]').prop('checked', false);
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$('#totalCount').text('0');
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$('#totalPrice').html('¥0.00');
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}
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});
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// 为单个商品项的复选框绑定改变事件
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$('input[name="selectOne"]').on('change', function() {
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if (!$(this).prop('checked')) {
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$('#selectAll').prop('checked', false);
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}
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calcTotal();
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});
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// 为删除选中商品超链接绑定事件回调
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$('#clearSelected').on('click', function() {
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if (confirm('确定要删除所选商品吗?')) {
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$('.single-item').each(function() {
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if ($(this).find('input[name="selectOne"]').prop('checked')) {
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$(this).remove();
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}
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});
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calcTotal();
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}
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});
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// 为减少和添加商品数量的按钮绑定事件回调
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$('.single-item button').on('click', function(evt) {
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$(this).parent().parent().find('input[name="selectOne"]').prop('checked', true);
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if ($(this).text() == '-') {
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var count = parseInt($(this).next().val());
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if (count > 1) {
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count -= 1;
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$(this).next().val(count);
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} else {
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alert('商品数量最少为1');
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}
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} else {
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var count = parseInt($(this).prev().val());
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if (count < 200) {
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count += 1;
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$(this).prev().val(count);
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} else {
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alert('商品数量最多为200');
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}
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}
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var price = parseFloat($(this).parent().prev().find('span').text());
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$(this).parent().next().html('¥' + (price * count).toFixed(2));
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calcTotal();
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});
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// 为单个商品项删除超链接绑定事件回调
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$('.single-item a').on('click', function() {
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if (window.confirm('确定要删除该项吗?')) {
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$(this).parent().parent().remove();
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calcTotal();
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}
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});
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// 为商品数量文本框绑定改变事件回调
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$('.single-item input[type="text"]').on('change', function() {
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$(this).parent().parent().find('input[name="selectOne"]').prop('checked', true);
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var count = parseInt($(this).val());
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// 12 == "12"
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// "12abc" == 12
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// "xyz" == NaN
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if (count != $(this).val() || count < 1 || count > 200) {
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alert('无效的商品数量值');
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count = 1;
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$(this).val(count);
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}
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var price = parseFloat($(this).parent().prev().find('span').text());
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$(this).parent().next().html('¥' + (price * count).toFixed(2));
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calcTotal();
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});
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// 计算总计
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function calcTotal() {
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var checkBoxes = $('input[name="selectOne"]');
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var priceSpans = $('.single-item .price');
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var countInputs = $('.single-item .count');
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var totalCount = 0;
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var totalPrice = 0;
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for (var i = 0; i < priceSpans.length; i += 1) {
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// 复选框被勾中的购物车项才进行计算
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if ($(checkBoxes[i]).prop('checked')) {
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// 强调: jQuery对象使用下标运算或get方法会还原成原生的JavaScript对象
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var price = parseFloat($(priceSpans[i]).text());
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var count = parseInt($(countInputs[i]).val());
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totalCount += count;
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totalPrice += price * count;
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}
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}
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$('#totalCount').text(totalCount);
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$('#totalPrice').html('¥' + totalPrice.toFixed(2));
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}
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});
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</script>
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</body>
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</html>
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