JS實現(xiàn)購物車特效
更新時間：2017年02月02日 13:51:13 作者：happyzgm
本文主要分享了用JavaScript實現(xiàn)購物車特效的示例代碼。具有很好的參考價值，下面跟著小編一起來看下吧
效果：
1.點擊全選按鈕可以全選，再點擊就全不選
2.點擊數(shù)量 ‘ + ' ‘ - ' 可以自動計算。并且合計保持更新。當(dāng)數(shù)量大于1時‘ - '出現(xiàn)。小于等于1時‘ - '消失
3.點擊刪除可以實現(xiàn)刪除功能。
4.點擊全選旁的刪除按鈕可以全部刪除。
5.選好商品后點擊已選商品，可以顯示選中的商品
6.選中的商品可以取消選擇。
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>購物車</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;
width: 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 {
width: 60px;
}
.goods {
width: 300px;
}
.goods span {
width: 180px;
margin-top: 20px;
text-align: left;
float: left;
}
.price {
width: 130px;
}
.count {
width: 90px;
}
.count .add, .count input, .count .reduce {
float: left;
margin-right: -1px;
position: relative;
z-index: 0;
}
.count .add, .count .reduce {
height: 23px;
width: 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 {
width: 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 {
width: 150px;
color: red;
font-weight: bold;
}
.operation {
width: 80px;
}
.operation span:hover, a:hover {
cursor: pointer;
color: red;
text-decoration: underline;
}
img {
width: 100px;
height: 80px;
/*border: 1px solid #ccc;*/
margin-right: 10px;
float: left;
}
.foot {
width: 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 {
width: 100px;
height: 48px;
line-height: 48px;
padding-left: 5px;
color: #666;
}
.foot .closing {
border-left: 1px solid #c8c8c8;
width: 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 {
width: 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;
width: 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;
width: 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"/> 全選</label></th>
<th>商品</th>
<th>單價</th>
<th>數(shù)量</th>
<th>小計</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="http://cdn.attach.qdfuns.com/notes/pics/201612/21/075704loo2mdzuux5123gu.jpg.editor.jpg" alt=""/><span>Casio/卡西歐 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">刪除</span></td>
</tr>
<tr>
<td class="checkbox"><input class="check-one check" type="checkbox"/></td>
<td class="goods"><img src="http://cdn.attach.qdfuns.com/notes/pics/201612/21/075704m26zvv6e52sjczee.jpg.editor.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">刪除</span></td>
</tr>
<tr>
<td class="checkbox"><input class="check-one check" type="checkbox"/></td>
<td class="goods"><img src="http://cdn.attach.qdfuns.com/notes/pics/201612/21/075704etdabo2fpppdplsa.jpg.editor.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">刪除</span></td>
</tr>
<tr>
<td class="checkbox"><input class="check-one check" type="checkbox"/></td>
<td class="goods"><img src="http://cdn.attach.qdfuns.com/notes/pics/201612/21/075823wdtw1pdvf3wbwd8b.jpg.editor.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">刪除</span></td>
</tr>
</tbody>
</table>
<div class="foot" id="foot">
<label class="fl select-all"><input type="checkbox" class="check-all check"/> 全選</label>
<a class="fl delete" id="deleteAll" href="javascript:;">刪除</a>
<div class="fr closing">結(jié) 算</div>
<div class="fr total">合計：￥<span id="priceTotal">0.00</span></div>
<div class="fr selected" id="selected">已選商品
<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>取消選擇</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');
//計算
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 + '">取消選擇</span></div>'
}
else {
tr[i].className = '';
}
}
selectedTotal.innerHTML = seleted;
priceTotal.innerHTML = price.toFixed(2);
selectedViewList.innerHTML = HTMLstr;
if (seleted == 0) {
foot.className = 'foot';
}
}
//小計
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('確定要刪除嗎？');
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('確定刪除嗎？');
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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