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這期內(nèi)容當(dāng)中小編將會(huì)給大家?guī)碛嘘P(guān)如何利用JavaScript實(shí)現(xiàn)一個(gè)購物車功能,文章內(nèi)容豐富且以專業(yè)的角度為大家分析和敘述,閱讀完這篇文章希望大家可以有所收獲。
JS實(shí)現(xiàn)購物車商品 加、減、單選、全選、刪除、手動(dòng)輸入、價(jià)格更新等功能,供大家參考,具體內(nèi)容如下
JavaScript代碼
$(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(); } } //減少 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(); } } //手動(dòng)輸入 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(); } } //計(jì)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++) { //獲取單價(jià) var priceEm = tbodyTr[i].getElementsByClassName("price-em")[0]; var price = parseFloat(priceEm.innerText); //獲取數(shù)量 var counts = tbodyTr[i].getElementsByClassName("combo-value")[0]; var count = parseInt(counts.value); //乘積 var chengji=price*count; //把乘積弄到金額里面 var amountEm=tbodyTr[i].getElementsByClassName("amount-em")[0]; amountEm.innerText=chengji.toFixed(2); //獲取單選框 var liD=tbodyTr[i].getElementsByTagName("input")[0]; if(liD.checked){ sumprice+=chengji; } } var zong=document.getElementById("total-amount-em"); zong.innerText=sumprice.toFixed(2); } //刪除 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"><h4>Dior 迪奧 花漾甜心小姐 女士淡香水</h4><ul><li>50毫升</li><li>不支持7天無理由退貨</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代碼
@charset "utf-8"; #main{ padding: 30px 0px; } #cart{ background: #FFFFFF; padding: 40px; } #cart h2{ 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代碼
<!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">登錄</a> </li> <li class="separator">|</li> <li> <a href="./register.html" rel="external nofollow" >免費(fèi)注冊</a> </li> <li class="separator">|</li> <li> <a href="#">我的訂單</a> </li> <li class="separator">|</li> <li> <a href="#">收藏夾</a> </li> <li class="separator">|</li> <li> <a href="#">幫助中心</a> </li> </ul> </div> </div> </div> <div id="header"> <div class="container"> <div id="header-logo"> <a href="./index.html" rel="external nofollow" > <h2>LOGO</h2> </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>熱搜:</strong> </li> <li> <a href="#">筆記本</a> </li> <li class="separator">|</li> <li> <a href="#">平板</a> </li> <li class="separator">|</li> <li> <a href="#">手機(jī)</a> </li> <li class="separator">|</li> <li> <a href="#">墨盒</a> </li> </ul> <a href="#"id="header-search-advancedsearch">高級(jí)搜索</a> </div> </div> <div id="header-cart"> <i class="iconfont icon-cart"></i> <a href="#">購物車</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>全部商品分類</strong> </div> <div class="float-right"> <i class="iconfont icon-dropdown"></i> </div> </div> <div id="navigation-category-content"> <dl> <dt>美容彩妝</dt> <dd> <a href="#">護(hù)膚</a> <em>|</em> <a href="#">面膜</a> <em>|</em> <a href="#">防曬</a> <em>|</em> <a href="#">彩妝</a> <em>|</em> <a href="#">香水</a> </dd> </dl> <dl> <dt>服飾箱包</dt> <dd> <a href="#">大牌</a> <em>|</em> <a href="#">服飾</a> <em>|</em> <a href="#">箱包</a> <em>|</em> <a href="#">配飾</a> <em>|</em> <a href="#">鞋履</a> </dd> </dl> <dl> <dt>數(shù)碼家電</dt> <dd> <a href="#">手機(jī)</a> <em>|</em> <a href="#">生活</a> <em>|</em> <a href="#">廚房</a> <em>|</em> <a href="#">數(shù)碼</a> <em>|</em> <a href="#">辦公</a> </dd> </dl> <dl> <dt>家居個(gè)護(hù)</dt> <dd> <a href="#">洗護(hù)</a> <em>|</em> <a href="#">居家</a> <em>|</em> <a href="#">女性</a> <em>|</em> <a href="#">寵物</a> <em>|</em> <a href="#">家紡</a> </dd> </dl> <dl> <dt>運(yùn)動(dòng)戶外</dt> <dd> <a href="#">運(yùn)動(dòng)服飾</a> <em>|</em> <a href="#">運(yùn)動(dòng)鞋</a> <em>|</em> <a href="#">戶外服飾</a> <em>|</em> <a href="#">戶外鞋靴</a> <em>|</em> <a href="#">戶外裝備</a> </dd> </dl> <dl> <dt>環(huán)球美食</dt> <dd> <a href="#">飲品</a> <em>|</em> <a href="#">零食</a> <em>|</em> <a href="#">糧油</a> <em>|</em> <a href="#">糕點(diǎn)</a> </dd> </dl> </div> </div> <div id="navigation-menu"> <ul> <li> <a href="#">促銷</a> </li> <li> <a href="#">秒殺</a> </li> <li> <a href="#">優(yōu)惠券</a> </li> </ul> </div> </div> </div> <div id="main"> <div class="container"> <div id="cart"> <h2>購物車</h2> <form action="#" method="post"> <table class="form"> <thead> <tr> <th width="8%">選擇</th> <th width="50%">商品</th> <th width="13%">單價(jià)(元)</th> <th width="15%">數(shù)量</th> <th width="14%">金額(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"> <h4>Dior 迪奧 花漾甜心小姐 女士淡香水</h4> <ul> <li>50毫升</li> <li>不支持7天無理由退貨</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"> <h4>LANCÔME 蘭蔻 嫩肌活膚精華肌底液</h4> <ul> <li>50毫升</li> <li>不支持7天無理由退貨</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>全選</span> </label> <a href="#"id="cart-delete">刪除</a> </td> <td colspan="3"> <span>合計(jì):</span> <strong id="total-amount">¥<em id="total-amount-em">0.00</em></strong> <input type="submit" value="立即結(jié)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 假一賠十</dd> </dl> </div> <div class="footer-promise-column clear"> <img src="./img/2.png"> <dl> <dt>無憂退貨</dt> <dd>國內(nèi)退貨 售后無憂</dd> </dl> </div> <div class="footer-promise-column clear"> <img src="./img/3.png"> <dl> <dt>低價(jià)保障</dt> <dd>縮減環(huán)節(jié) 確保低價(jià)</dd> </dl> </div> <div class="footer-promise-column clear"> <img src="./img/4.png"> <dl> <dt>海外發(fā)貨</dt> <dd>海外直郵 閃電發(fā)貨</dd> </dl> </div> </div> </div> <div id="footer-link"> <div class="container clear"> <div class="footer-link-column"> <h4>購物指南</h4> <ul> <li> <a href="#" >購物流程</a> </li> <li> <a href="#" >發(fā)票制度</a> </li> <li> <a href="#" >賬戶管理</a> </li> <li> <a href="#" >會(huì)員優(yōu)惠</a> </li> </ul> </div> <div class="footer-link-column"> <h4>支付方式</h4> <ul> <li> <a href="#" >貨到付款</a> </li> <li> <a href="#" >網(wǎng)上支付</a> </li> <li> <a href="#" >禮 品 卡</a> </li> <li> <a href="#" >銀行轉(zhuǎn)賬</a> </li> </ul> </div> <div class="footer-link-column"> <h4>訂單服務(wù)</h4> <ul> <li> <a href="#" >配送查詢</a> </li> <li> <a href="#" >狀態(tài)說明</a> </li> <li> <a href="#" >取消訂單</a> </li> <li> <a href="#" >修改訂單</a> </li> </ul> </div> <div class="footer-link-column"> <h4>配送方式</h4> <ul> <li> <a href="#" >配送范圍</a> </li> <li> <a href="#" >免郵標(biāo)準(zhǔn)</a> </li> <li> <a href="#" >訂單自提</a> </li> <li> <a href="#" >驗(yàn)貨簽收</a> </li> </ul> </div> <div class="footer-link-column"> <h4>售后服務(wù)</h4> <ul> <li> <a href="#" >售后政策</a> </li> <li> <a href="#" >價(jià)格保護(hù)</a> </li> <li> <a href="#" >退款說明</a> </li> <li> <a href="#" >退 換 貨</a> </li> </ul> </div> </div> </div> <div id="footer-menu"> <ul> <li> <a href="#" >關(guān)于我們</a> </li> <li class="separator">|</li> <li> <a href="#" >服務(wù)條款</a> </li> <li class="separator">|</li> <li> <a href="#" >隱私保護(hù)</a> </li> <li class="separator">|</li> <li> <a href="#" >聯(lián)系我們</a> </li> <li class="separator">|</li> <li> <a href="#" >幫助中心</a> </li> </ul> </div> <div id="footer-copyright"> <p>Copyright © 2016 XXX. All Rights Reserved.</p> </div> </div> </body> </html>
上述就是小編為大家分享的如何利用JavaScript實(shí)現(xiàn)一個(gè)購物車功能了,如果剛好有類似的疑惑,不妨參照上述分析進(jìn)行理解。如果想知道更多相關(guān)知識(shí),歡迎關(guān)注億速云行業(yè)資訊頻道。
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