JS实现购物车商品 加、减、单选、全选、删除、手动输入、价格更新等功能，供大家参考，具体内容如下
JavaScript代码
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$(function(){ $("#footer").hover(function(){ $("#footer").css({"border":"#e00"}) },) var inputs=document.getElementsByName("good-id"); var all=document.getElementsByName("all")[0]; all.onclick=function(){ for(var i=0;i<inputs.length;i++){ inputs[i].checked=this.checked; } sumprice(); } for(var i=0;i<inputs.length;i++){ inputs[i].onclick=function(){ var count=0; for(var j=0;j<inputs.length;j++){ if(inputs[j].checked==true){ count++ } } if(count<inputs.length){ all.checked=false; }else{ all.checked=true; } sumprice(); } } //减少 var minus=document.getElementsByName("minus"); for(var i=0;i<minus.length;i++){ minus[i].onclick=function(){ var counts=this.nextElementSibling; var count=parseInt(counts.value); if(count>1){ counts.value=--count; } sumprice(); } } //增加 var plus=document.getElementsByName("plus"); for(var i=0;i<plus.length;i++){ plus[i].onclick=function(){ var counts=this.previousElementSibling; var count=parseInt(counts.value); counts.value=++count; sumprice(); } } //手动输入 var counts=document.getElementsByName("count"); for(var i=0;i<counts.length;i++){ counts[i].onblur=function(){ var count=parseInt(this.value); if(isNaN(count)||count<1){ count=1; } this.value=count; sumprice(); } } //计算function sumprice() { var tbody = document.getElementById("cart-goods-list"); var tbodyTr = tbody.getElementsByTagName("tr"); var sumprice=0; for(var i = 0; i < tbodyTr.length; i++) { //获取单价 var priceEm = tbodyTr[i].getElementsByClassName("price-em")[0]; var price = parseFloat(priceEm.innerText); //获取数量 var counts = tbodyTr[i].getElementsByClassName("combo-value")[0]; var count = parseInt(counts.value); //乘积 var chengji=price*count; //把乘积弄到金额里面 var amountEm=tbodyTr[i].getElementsByClassName("amount-em")[0]; amountEm.innerText=chengji.toFixed(2); //获取单选框 var liD=tbodyTr[i].getElementsByTagName("input")[0]; if(liD.checked){ sumprice+=chengji; } } var zong=document.getElementById("total-amount-em"); zong.innerText=sumprice.toFixed(2);} //删除 document.getElementById("cart-delete").onclick=function(){ var tbody = document.getElementById("cart-goods-list"); var del=[]; for(var i=0;i<inputs.length;i++){ if(inputs[i].checked){ del.push(inputs[i].parentElement.parentElement); } } for(var i=0;i<del.length;i++){ tbody.removeChild(del[i]); } all.checked=false; sumprice(); } document.getElementById("total-amount").onmouseover=function(){ document.getElementById("total-amount").style.cursor="pointer"; } document.getElementById("total-amount").onclick=function(){ var tbody = document.getElementById("cart-goods-list"); var tr=document.createElement("tr"); tr.innerHTML='<tr><td><input type="checkbox" name="good-id" value="1"></td><td class="goods"><div class="goods-image"><img src="./pic/goods/1.jpg"></div><div class="goods-information"><h3>Dior 迪奥 花漾甜心小姐 女士淡香水</h3><ul><li>50毫升</li><li>不支持7天无理由退货</li></ul></div></td><td><span class="price">￥<em class="price-em">498.00</em></span></td><td><div class="combo"><input type="button" name="minus" value="-" class="combo-minus"><input type="text" name="count" value="1" class="combo-value"><input type="button" name="plus" value="+" class="combo-plus"></div></td><td><strong class="amount">￥<em class="amount-em">498.00</em></strong></td></tr>'; tbody.appendChild(tr); }}) |
CSS代码
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@charset "utf-8";#main{ padding: 30px 0px;}#cart{ background: #FFFFFF; padding: 40px;}#cart h1{ line-height: 40px; padding: 0px 0px 10px 0px;}table.form{ border-collapse: collapse; empty-cells: show; margin: 20px 0px; padding: 0px; table-layout: fixed; width: 100%;}table.form th,table.form td{ border-bottom: 1px solid #DDDDDD; padding: 15px 10px; text-align: left;}table.form{ border-top: 3px solid #DDDDDD;}.goods .goods-image img{ border: 1px solid #DDDDDD; float: left; height: 100px; margin: 0px 20px 0px 0px;}.goods .goods-information{ float: left;}.goods .goods-information ul{ color: #666666; font-size: 12px; line-height: 20px; margin:10px 0px 0px 0px;}.price,.amount,#total-amount{ color: #E00000;}#total-amount{ font-size: 22px;}.price em,.amount em,#total-amount em{ font-style: normal;}.combo .combo-minus,.combo .combo-value,.combo .combo-plus{ background: #FFFFFF; border: 1px solid #DDDDDD; color: #333333; float: left; font-weight: bold; margin: 0px; outline: none; text-align: center;}.combo .combo-minus,.combo .combo-plus{ font-size: 16px; height: 26px; line-height: 26px; padding: 0px; width: 24px;}.combo .combo-value{ border-left: none; border-right: none; height: 20px; line-height: 20px; padding: 2px; width: 40px;}#cart-delete{ margin-left: 20px;}#settlement{ background: #E00000; border: none; color: #FFFFFF; float: right; font-size: 16px; height: 40px; line-height: 40px; margin: 0px; outline: none; padding: 0px; width: 160px;} |
HTML代码
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<!DOCTYPE html><html> <head> <meta charset="utf-8"> <title>商城</title> <link rel="stylesheet" href="./css/common.css" rel="external nofollow" > <link rel="stylesheet" href="./iconfont/iconfont.css" rel="external nofollow" > <link rel="stylesheet" href="./css/cart.css" rel="external nofollow" > <script type="text/javascript" src="js/jquery-3.1.1.js"></script> <script type="text/javascript" src="./js/cart2.js"></script> </head> <body> <div id="topbar"> <div class="container"> <div id="topbar-location"> <i class="iconfont icon-location"></i> <a href="#">北京</a> </div> <div id="topbar-menu"> <ul> <li> <a href="#"class="red">登录</a> </li> <li class="separator">|</li> <li> <a href="./register.html" rel="external nofollow" >免费注册</a> </li> <li class="separator">|</li> <li> <a href="#">我的订单</a> </li> <li class="separator">|</li> <li> <a href="#">收藏夹</a> </li> <li class="separator">|</li> <li> <a href="#">帮助中心</a> </li> </ul> </div> </div> </div> <div id="header"> <div class="container"> <div id="header-logo"> <a href="./index.html" rel="external nofollow" > <h1>LOGO</h1> </a> </div> <div id="header-search"> <div id="header-search-combobox"> <form action="#" method="post"> <input type="text" name="keywords" placeholder="搜索" id="header-search-combobox-text"> <button type="submit" id="header-search-combobox-button"> <i class="iconfont icon-search"></i> </button> </form> </div> <div class="clear"> <ul id="header-search-hotkeywords"> <li> <strong>热搜：</strong> </li> <li> <a href="#">笔记本</a> </li> <li class="separator">|</li> <li> <a href="#">平板</a> </li> <li class="separator">|</li> <li> <a href="#">手机</a> </li> <li class="separator">|</li> <li> <a href="#">墨盒</a> </li> </ul> <a href="#"id="header-search-advancedsearch">高级搜索</a> </div> </div> <div id="header-cart"> <i class="iconfont icon-cart"></i> <a href="#">购物车</a> <strong>0</strong> </div> </div> </div> <div id="navigation"> <div class="container"> <div id="navigation-category"> <div id="navigation-category-heading"> <div class="float-left"> <i class="iconfont icon-menu"></i> <strong>全部商品分类</strong> </div> <div class="float-right"> <i class="iconfont icon-dropdown"></i> </div> </div> <div id="navigation-category-content"> <dl> <dt>美容彩妆</dt> <dd> <a href="#">护肤</a> <em>|</em> <a href="#">面膜</a> <em>|</em> <a href="#">防晒</a> <em>|</em> <a href="#">彩妆</a> <em>|</em> <a href="#">香水</a> </dd> </dl> <dl> <dt>服饰箱包</dt> <dd> <a href="#">大牌</a> <em>|</em> <a href="#">服饰</a> <em>|</em> <a href="#">箱包</a> <em>|</em> <a href="#">配饰</a> <em>|</em> <a href="#">鞋履</a> </dd> </dl> <dl> <dt>数码家电</dt> <dd> <a href="#">手机</a> <em>|</em> <a href="#">生活</a> <em>|</em> <a href="#">厨房</a> <em>|</em> <a href="#">数码</a> <em>|</em> <a href="#">办公</a> </dd> </dl> <dl> <dt>家居个护</dt> <dd> <a href="#">洗护</a> <em>|</em> <a href="#">居家</a> <em>|</em> <a href="#">女性</a> <em>|</em> <a href="#">宠物</a> <em>|</em> <a href="#">家纺</a> </dd> </dl> <dl> <dt>运动户外</dt> <dd> <a href="#">运动服饰</a> <em>|</em> <a href="#">运动鞋</a> <em>|</em> <a href="#">户外服饰</a> <em>|</em> <a href="#">户外鞋靴</a> <em>|</em> <a href="#">户外装备</a> </dd> </dl> <dl> <dt>环球美食</dt> <dd> <a href="#">饮品</a> <em>|</em> <a href="#">零食</a> <em>|</em> <a href="#">粮油</a> <em>|</em> <a href="#">糕点</a> </dd> </dl> </div> </div> <div id="navigation-menu"> <ul> <li> <a href="#">促销</a> </li> <li> <a href="#">秒杀</a> </li> <li> <a href="#">优惠券</a> </li> </ul> </div> </div> </div> <div id="main"> <div class="container"> <div id="cart"> <h1>购物车</h1> <form action="#" method="post"> <table class="form"> <thead> <tr> <th width="8%">选择</th> <th width="50%">商品</th> <th width="13%">单价（元）</th> <th width="15%">数量</th> <th width="14%">金额（元）</th> </tr> </thead> <tbody id="cart-goods-list"> <tr> <td> <input type="checkbox" name="good-id" value="1"> </td> <td class="goods"> <div class="goods-image"> <img src="./pic/goods/1.jpg"> </div> <div class="goods-information"> <h3>Dior 迪奥 花漾甜心小姐 女士淡香水</h3> <ul> <li>50毫升</li> <li>不支持7天无理由退货</li> </ul> </div> </td> <td> <span class="price">￥<em class="price-em">498.00</em></span> </td> <td> <div class="combo"> <input type="button" name="minus" value="-" class="combo-minus"> <input type="text" name="count" value="1" class="combo-value"> <input type="button" name="plus" value="+" class="combo-plus"> </div> </td> <td> <strong class="amount">￥<em class="amount-em">498.00</em></strong> </td> </tr> <tr> <td> <input type="checkbox" name="good-id" value="2"> </td> <td class="goods"> <div class="goods-image"> <img src="./pic/goods/3.jpg"> </div> <div class="goods-information"> <h3>LANCÔME 兰蔻 嫩肌活肤精华肌底液</h3> <ul> <li>50毫升</li> <li>不支持7天无理由退货</li> </ul> </div> </td> <td> <span class="price">￥<em class="price-em">598.00</em></span> </td> <td> <div class="combo"> <input type="button" name="minus" value="-" class="combo-minus"> <input type="text" name="count" value="1" class="combo-value"> <input type="button" name="plus" value="+" class="combo-plus"> </div> </td> <td> <strong class="amount">￥<em class="amount-em">598.00</em></strong> </td> </tr> </tbody> <tfoot> <tr> <td colspan="2"> <label> <input type="checkbox" name="all"> <span>全选</span> </label> <a href="#"id="cart-delete">删除</a> </td> <td colspan="3"> <span>合计：</span> <strong id="total-amount">￥<em id="total-amount-em">0.00</em></strong> <input type="submit" value="立即结算" id="settlement"> </td> </tr> </tfoot> </table> </form> </div> </div> </div> <div id="footer"> <div id="footer-promise"> <div class="container clear"> <div class="footer-promise-column clear"> <img src="./img/1.png"> <dl> <dt>100%正品</dt> <dd>正品保障 假一赔十</dd> </dl> </div> <div class="footer-promise-column clear"> <img src="./img/2.png"> <dl> <dt>无忧退货</dt> <dd>国内退货 售后无忧</dd> </dl> </div> <div class="footer-promise-column clear"> <img src="./img/3.png"> <dl> <dt>低价保障</dt> <dd>缩减环节 确保低价</dd> </dl> </div> <div class="footer-promise-column clear"> <img src="./img/4.png"> <dl> <dt>海外发货</dt> <dd>海外直邮 闪电发货</dd> </dl> </div> </div> </div> <div id="footer-link"> <div class="container clear"> <div class="footer-link-column"> <h3>购物指南</h3> <ul> <li> <a href="#" >购物流程</a> </li> <li> <a href="#" >发票制度</a> </li> <li> <a href="#" >账户管理</a> </li> <li> <a href="#" >会员优惠</a> </li> </ul> </div> <div class="footer-link-column"> <h3>支付方式</h3> <ul> <li> <a href="#" >货到付款</a> </li> <li> <a href="#" >网上支付</a> </li> <li> <a href="#" >礼 品 卡</a> </li> <li> <a href="#" >银行转账</a> </li> </ul> </div> <div class="footer-link-column"> <h3>订单服务</h3> <ul> <li> <a href="#" >配送查询</a> </li> <li> <a href="#" >状态说明</a> </li> <li> <a href="#" >取消订单</a> </li> <li> <a href="#" >修改订单</a> </li> </ul> </div> <div class="footer-link-column"> <h3>配送方式</h3> <ul> <li> <a href="#" >配送范围</a> </li> <li> <a href="#" >免邮标准</a> </li> <li> <a href="#" >订单自提</a> </li> <li> <a href="#" >验货签收</a> </li> </ul> </div> <div class="footer-link-column"> <h3>售后服务</h3> <ul> <li> <a href="#" >售后政策</a> </li> <li> <a href="#" >价格保护</a> </li> <li> <a href="#" >退款说明</a> </li> <li> <a href="#" >退 换 货</a> </li> </ul> </div> </div> </div> <div id="footer-menu"> <ul> <li> <a href="#" >关于我们</a> </li> <li class="separator">|</li> <li> <a href="#" >服务条款</a> </li> <li class="separator">|</li> <li> <a href="#" >隐私保护</a> </li> <li class="separator">|</li> <li> <a href="#" >联系我们</a> </li> <li class="separator">|</li> <li> <a href="#" >帮助中心</a> </li> </ul> </div> <div id="footer-copyright"> <p>Copyright © 2016 XXX. All Rights Reserved.</p> </div> </div> </body></html> |
注：CSS样式代码由于太多上面没有给全，只给了主要代码。小伙伴们可以根据实际情况修改样式。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/qq_41605893/article/details/109539900
