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  • 简单的购物车功能

    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>购物车</title>
    </head>
    <style type="text/css">
    * {
    margin: 0;
    padding: 0;
    }
    a {
    color: #666;
    text-decoration: none;
    }
    body {
    padding: 20px;
    color: #666;
    }
    .fl{
    float: left;
    }
    .fr {
    float: right;
    }
    table {
    border-collapse: collapse;
    border-spacing: 0;
    border: 0;
    text-align: center;
    937px;
    }
    th, td {
    border: 1px solid #CADEFF;
    }
    th {
    background: #e2f2ff;
    border-top: 3px solid #a7cbff;
    height: 30px;
    }
    td {
    padding: 10px;
    color: #444;
    }
    tbody tr:hover {
    background: RGB(238,246,255);
    }
    .checkbox {
    60px;
    }
    .goods {
    300px;
    }
    .goods span {
    180px;
    margin-top: 20px;
    text-align: left;
    float: left;
    }
    .price {
    130px;
    }
    .count {
    90px;
    }
    .count .add, .count input, .count .reduce {
    float: left;
    margin-right: -1px;
    position: relative;
    z-index: 0;
    }
    .count .add, .count .reduce {
    height: 23px;
    17px;
    border: 1px solid #e5e5e5;
    background: #f0f0f0;
    text-align: center;
    line-height: 23px;
    color: #444;
    }
    .count .add:hover, .count .reduce:hover {
    color: #f50;
    z-index: 3;
    border-color: #f60;
    cursor: pointer;
    }
    .count input {
    50px;
    height: 15px;
    line-height: 15px;
    border: 1px solid #aaa;
    color: #343434;
    text-align: center;
    padding: 4px 0;
    background-color: #fff;
    z-index: 2;
    }
    .subtotal {
    150px;
    color: red;
    font-weight: bold;
    }
    .operation {
    80px;
    }
    .operation span:hover, a:hover {
    cursor: pointer;
    color: red;
    text-decoration: underline;
    }
    img {
    100px;
    height: 80px;
    /*border: 1px solid #ccc;*/
    margin-right: 10px;
    float: left;
    }

    .foot {
    935px;
    margin-top: 10px;
    color: #666;
    height: 48px;
    border: 1px solid #c8c8c8;
    background-color: #eaeaea;
    background-image:linear-gradient(RGB(241,241,241),RGB(226,226,226));
    position: relative;
    z-index: 8;
    }
    .foot div, .foot a {
    line-height: 48px;
    height: 48px;
    }
    .foot .select-all {
    100px;
    height: 48px;
    line-height: 48px;
    padding-left: 5px;
    color: #666;
    }
    .foot .closing {
    border-left: 1px solid #c8c8c8;
    100px;
    text-align: center;
    color: #000;
    font-weight: bold;
    background: RGB(238,238,238);
    cursor: pointer;
    }
    .foot .total{
    margin: 0 20px;
    cursor: pointer;
    }
    .foot #priceTotal, .foot #selectedTotal {
    color: red;
    font-family: "Microsoft Yahei";
    font-weight: bold;
    }
    .foot .selected {
    cursor: pointer;
    }
    .foot .selected .arrow {
    position: relative;
    top:-3px;
    margin-left: 3px;
    }
    .foot .selected .down {
    position: relative;
    top:3px;
    display: none;
    }
    .show .selected .down {
    display: inline;
    }
    .show .selected .up {
    display: none;
    }
    .foot .selected:hover .arrow {
    color: red;
    }
    .foot .selected-view {
    935px;
    border: 1px solid #c8c8c8;
    position: absolute;
    height: auto;
    background: #ffffff;
    z-index: 9;
    bottom: 48px;
    left: -1px;
    display:none;
    }
    .show .selected-view {
    display: block;
    }
    .foot .selected-view div{
    height: auto;
    }
    .foot .selected-view .arrow {
    font-size: 16px;
    line-height: 100%;
    color:#c8c8c8;
    position: absolute;
    right: 330px;
    bottom: -9px;
    }
    .foot .selected-view .arrow span {
    color: #ffffff;
    position: absolute;
    left: 0px;
    bottom: 1px;
    }
    #selectedViewList {
    padding: 20px;
    margin-bottom: -20px;
    }
    #selectedViewList div{
    display: inline-block;
    position: relative;
    100px;
    height: 80px;
    border: 1px solid #ccc;
    margin: 10px;
    }
    #selectedViewList div span {
    display: none;
    color: #ffffff;
    font-size: 12px;
    position: absolute;
    top: 0px;
    right: 0px;
    60px;
    height: 18px;
    line-height: 18px;
    text-align: center;
    background: RGBA(0,0,0,.5);
    cursor: pointer;
    }
    #selectedViewList div:hover span {
    display: block;
    }
    </style>
    <body>
    <table id="cartTable">
    <thead>
    <tr>
    <th><label><input class="check-all check" type="checkbox"/>&nbsp;全选</label></th>
    <th>商品</th>
    <th>单价</th>
    <th>数量</th>
    <th>小计</th>
    <th>操作</th>
    </tr>
    </thead>
    <tbody>
    <tr>
    <td class="checkbox"><input class="check-one check" type="checkbox"/></td>
    <td class="goods"><img src="img/psb.jpg" alt=""/><span>Casio/卡西欧 EX-TR350</span></td>
    <td class="price">5999.88</td>
    <td class="count">
    <span class="reduce"></span>
    <input class="count-input" type="text" value="1"/>
    <span class="add">+</span></td>
    <td class="subtotal">5999.88</td>
    <td class="operation"><span class="delete">删除</span></td>
    </tr>
    <tr>
    <td class="checkbox"><input class="check-one check" type="checkbox"/></td>
    <td class="goods"><img src="img/psb.jpg" alt=""/><span>Canon/佳能 PowerShot SX50 HS</span></td>
    <td class="price">3888.50</td>
    <td class="count"><span class="reduce"></span><input class="count-input" type="text" value="1"/><span class="add">+</span></td>
    <td class="subtotal">3888.50</td>
    <td class="operation"><span class="delete">删除</span></td>
    </tr>
    <tr>
    <td class="checkbox"><input class="check-one check" type="checkbox"/></td>
    <td class="goods"><img src="img/psb.jpg" alt=""/><span>Sony/索尼 DSC-WX300</span></td>
    <td class="price">1428.50</td>
    <td class="count"><span class="reduce"></span><input class="count-input" type="text" value="1"/><span class="add">+</span></td>
    <td class="subtotal">1428.50</td>
    <td class="operation"><span class="delete">删除</span></td>
    </tr>
    <tr>
    <td class="checkbox"><input class="check-one check" type="checkbox"/></td>
    <td class="goods"><img src="img/psb.jpg" alt=""/><span>Fujifilm/富士 instax mini 25</span></td>
    <td class="price">640.60</td>
    <td class="count"><span class="reduce"></span><input class="count-input" type="text" value="1"/><span class="add">+</span></td>
    <td class="subtotal">640.60</td>
    <td class="operation"><span class="delete">删除</span></td>
    </tr>
    </tbody>
    </table>

    <div class="foot" id="foot">
    <label class="fl select-all"><input type="checkbox" class="check-all check"/>&nbsp;全选</label>
    <a class="fl delete" id="deleteAll" href="javascript:;">删除</a>
    <div class="fr closing">结 算</div>
    <div class="fr total">合计:¥<span id="priceTotal">0.00</span></div>
    <div class="fr selected" id="selected">已选商品
    <span id="selectedTotal">0</span>件
    <span class="arrow up">︽</span>
    <span class="arrow down">︾</span>
    </div>
    <div class="selected-view">
    <div id="selectedViewList" class="clearfix">
    <!--<div><img src="images/1.jpg"><span>取消选择</span></div>-->
    </div>
    <span class="arrow">◆<span>◆</span></span>
    </div>
    </div>
    <script>
    window.onload = function () {
    if (!document.getElementsByClassName) {
    document.getElementsByClassName = function (cls) {
    var ret = [];
    var els = document.getElementsByTagName('*');
    for (var i = 0, len = els.length; i < len; i++) {
    if (els[i].className === cls
    || els[i].className.indexOf(cls + ' ') >= 0
    || els[i].className.indexOf(' ' + cls + ' ') >= 0
    || els[i].className.indexOf(' ' + cls) >= 0) {
    ret.push(els[i]);
    }
    }
    return ret;
    }
    }

    var cartTable = document.getElementById('cartTable');
    var tr = cartTable.children[1].rows;
    var checkInputs = document.getElementsByClassName('check');
    var checkAllInputs = document.getElementsByClassName('check-all');
    var selectedTotal = document.getElementById('selectedTotal');
    var priceTotal = document.getElementById('priceTotal');
    var selected = document.getElementById('selected');
    var foot = document.getElementById('foot');
    var selectedViewList = document.getElementById('selectedViewList');
    var deleteAll = document.getElementById('deleteAll');

    //计算
    function getTotal() {
    var seleted = 0;
    var price = 0;
    var HTMLstr = '';
    for (var i = 0, len = tr.length; i < len; i++) {
    if (tr[i].getElementsByTagName('input')[0].checked) {
    tr[i].className = 'on';
    seleted += parseInt(tr[i].getElementsByTagName('input')[1].value);
    price += parseFloat(tr[i].cells[4].innerHTML);
    HTMLstr += '<div><img src="' + tr[i].getElementsByTagName('img')[0].src + '"><span class="del" index="' + i + '">取消选择</span></div>'
    }
    else {
    tr[i].className = '';
    }
    }

    selectedTotal.innerHTML = seleted;
    priceTotal.innerHTML = price.toFixed(2);
    selectedViewList.innerHTML = HTMLstr;

    if (seleted == 0) {
    foot.className = 'foot';
    }
    }

    //小计
    function getSubTotal(tr) {
    var tds = tr.cells;
    var price = parseFloat(tds[2].innerHTML);
    var count = parseInt(tr.getElementsByTagName('input')[1].value);
    var SubTotal = parseFloat(price * count);
    tds[4].innerHTML = SubTotal.toFixed(2);
    }

    for (var i = 0 , len = checkInputs.length; i < len; i++) {
    checkInputs[i].onclick = function () {
    if (this.className === 'check-all check') {
    for (var j = 0; j < checkInputs.length; j++) {
    checkInputs[j].checked = this.checked;
    }
    }
    if (this.checked == false) {
    for (var k = 0; k < checkAllInputs.length; k++) {
    checkAllInputs[k].checked = false;
    }
    }
    getTotal();
    }
    }

    selected.onclick = function () {
    if (foot.className == 'foot') {
    if (selectedTotal.innerHTML != 0) {
    foot.className = 'foot show';
    }
    }
    else {
    foot.className = 'foot';
    }
    }

    selectedViewList.onclick = function (e) {
    e = e || window.event;
    var el = e.srcElement;
    if (el.className == 'del') {
    var index = el.getAttribute('index');
    var input = tr[index].getElementsByTagName('input')[0];
    input.checked = false;
    input.onclick();
    }
    }

    for (var i = 0; i < tr.length; i++) {
    tr[i].onclick = function (e) {
    e = e || window.event;
    var el = e.srcElement;
    var cls = el.className;
    var input = this.getElementsByTagName('input')[1];
    var val = parseInt(input.value);
    var reduce = this.getElementsByTagName('span')[1];
    switch (cls) {
    case 'add':
    input.value = val + 1;
    reduce.innerHTML = '-';
    getSubTotal(this);
    break;
    case 'reduce':
    if (val > 1) {
    input.value = val - 1;
    }
    if (input.value <= 1) {
    reduce.innerHTML = '';
    }
    getSubTotal(this);
    break;
    case 'delete':
    var conf = confirm('确定要删除吗?');
    if (conf) {
    this.parentNode.removeChild(this);
    }
    break
    default :
    break;
    }
    getTotal();
    }
    tr[i].getElementsByTagName('input')[1].onkeyup = function () {
    var val = parseInt(this.value);
    var tr = this.parentNode.parentNode
    var reduce = tr.getElementsByTagName('span')[1];
    if (isNaN(val) || val < 1) {
    val = 1;
    }
    this.value = val;
    if (val <= 1) {
    reduce.innerHTML = '';
    }
    else {
    reduce.innerHTML = '-';
    }
    getSubTotal(tr);
    getTotal();
    }
    }

    deleteAll.onclick = function () {
    if (selectedTotal.innerHTML != '0') {
    var conf = confirm('确定删除吗?');
    if (conf) {
    for (var i = 0; i < tr.length; i++) {
    var input = tr[i].getElementsByTagName('input')[0];
    if (input.checked) {
    tr[i].parentNode.removeChild(tr[i]);
    i--;
    }
    }
    }
    }
    }

    checkAllInputs[0].checked = true;
    checkAllInputs[0].onclick();
    }

    </script>
    </body>
    </html>

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  • 原文地址:https://www.cnblogs.com/TTTK/p/6208971.html
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