JS实现购物车特效
程序员文章站
2022-06-01 14:51:35
效果：
1.点击全选按钮可以全选，再点击就全不选
2.点击数量 ‘ + ' ‘ - ' 可以自动计算。并且合计保持更新。当数量大于1时‘ - '出现。小于等...
效果：
1.点击全选按钮可以全选，再点击就全不选
2.点击数量 ‘ + ' ‘ - ' 可以自动计算。并且合计保持更新。当数量大于1时‘ - '出现。小于等于1时‘ - '消失
3.点击删除可以实现删除功能。
4.点击全选旁的删除按钮可以全部删除。
5.选好商品后点击已选商品，可以显示选中的商品
6.选中的商品可以取消选择。
<!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;
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="http://cdn.attach.qdfuns.com/notes/pics/201612/21/075704loo2mdzuux5123gu.jpg.editor.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="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">删除</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">删除</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">删除</span></td>
</tr>
</tbody>
</table>
<div class="foot" id="foot">
<label class="fl select-all"><input type="checkbox" class="check-all check"/> 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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