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<!doctype html> <html lang="en"> <head> <meta charset="utf-8" /> <title>原生JS實現購物車結算功能代碼</title> <link rel="stylesheet" href="css/style.css"/> <script type="text/javascript" src="js/demo.js"></script> </head> <body> <div class="catbox"><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>數量</th><th>小計</th><th>操作</th></tr></thead><tbody id="x"><tr><td class="checkbox"><input class="check-one check" type="checkbox"/></td><td class="goods"><img src="images/1.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="images/2.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="images/3.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="images/4.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" >刪除</a><div class="fr closing" >結 算</div><input type="hidden" id="cartTotalPrice" /><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> </div></body> </html>css
@charset "utf-8"; *{margin:0;padding:0;list-style-type:none;} a{color:#666;text-decoration:none;} table{border-collapse:collapse;border-spacing:0;border:0;} body{color:#666;font:12px/180% Arial, Helvetica, sans-serif, "新宋體";} clearfix:after{content:".";display:block;height:0;clear:both;visibility:hidden} .clearfix{display:inline-table} *html .clearfix{height:1%} .clearfix{display:block} *+html .clearfix{min-height:1%} .fl{float:left;} .fr{float:right;} /*素材家園 - www.sucaijiayuan.com*/ .catbox{width:940px;margin:100px auto;} .catbox table{text-align:center;width:100%;} .catbox table th,.catbox table td{border:1px solid #CADEFF;} .catbox table th{background:#e2f2ff;border-top:3px solid #a7cbff;height:30px;} .catbox table td{padding:10px;color:#444;} .catbox table tbody tr:hover{background:RGB(238,246,255);} .checkbox{width:60px;} .check-all{ vertical-align:middle;} .goods{width:300px;} .goods span{width:180px;margin-top:20px;text-align:left;float:left;} .goods img{width:100px;height:80px;margin-right:10px;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 span:hover,a:hover{cursor:pointer;color:red;text-decoration:underline;}.foot{margin-top:0px;color:#666;height:48px;border:1px solid #c8c8c8;border-top:0;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:80px;height:48px;line-height:48px;color:#666;text-align:center;} .foot .delete{padding-left:10px;} .foot .closing{border-left:1px solid #c8c8c8;width:103px;text-align:center;color:#666;font-weight:bold;cursor:pointer;background-image:linear-gradient(RGB(241,241,241),RGB(226,226,226));} .foot .closing:hover{background-image:linear-gradient(RGB(226,226,226),RGB(241,241,241));color:#333;} .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:938px;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:10px 20px 10px 20px;} #selectedViewList div{display:inline-block;position:relative;width:100px;height:80px;border:1px solid #ccc;margin:10px;float:left;} #selectedViewList div img{width:100px;height:80px;margin-right:10px;float:left;} #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:#000;cursor:pointer;} #selectedViewList div:hover span{display:block;}js
window.onload=function(){let checkAlls=document.getElementsByClassName('check-all')let checks=document.getElementsByClassName('check-one')let inputs=document.getElementsByClassName('count-input')let selectedTotal=document.getElementById('selectedTotal')let subtotals=document.getElementsByClassName('subtotal')let prices=document.getElementsByClassName('price')let adds=document.getElementsByClassName('add')let reduces=document.getElementsByClassName('reduce')let deletes=document.getElementsByClassName('delete')let tbo=document.getElementsByTagName('tbody')let trs=x.getElementsByTagName('tr')console.log(trs,tbo)//全選按鈕功能for(let n=0;n<checkAlls.length;n++){checkAlls[n].onchange=function(){for(let x=0;x<checks.length;x++){//所有單選按鈕跟隨變化checks[x].checked=this.checked}//另一個全選按鈕發生變化checkAll(this.checked) //調用統計和金額方法Sum()}}//單選按鈕for(let n=0;n<checks.length;n++){checks[n].onchange=function(){checkOne()Sum()}}//添加減去-按鈕for(let n=0;n<adds.length;n++){adds[n].index=nreduces[n].index=nadds[n].onclick=function(){inputs[this.index].value++com()Sum()}reduces[n].onclick=function(){inputs[this.index].value--if(inputs[this.index].value<=0){inputs[this.index].value=0}com()Sum()}}//input框鼠標離開功能for(let n=0;n<inputs.length;n++){inputs[n].index=ninputs[n].onblur=function(){if(inputs[this.index].value<=0){inputs[this.index].value=0}com()Sum()}}//刪除功能for(let n=0;n<deletes.length;n++){deletes[n].onclick=function(){let tr=this.parentNode.parentNodelet tbody=tr.parentNodetbody.removeChild(tr)for(let n=0;n<adds.length;n++){adds[n].index=nreduces[n].index=ninputs[n].index=n}}}//封裝單選按鈕功能 function checkOne(){let sss=0for(let x=0;x<checks.length;x++){if(checks[x].checked){sss++if(sss==checks.length){checkAll('true')}com()}else{checkAll()}}}//封裝統計和金額方法function Sum(){let sum=0 //統計let num=0 //金額for(let x=0;x<checks.length;x++){if(checks[x].checked){sum+=Number(inputs[x].value)num+=parseFloat(subtotals[x].innerHTML)}selectedTotal.innerHTML=sumpriceTotal.innerHTML=num.toFixed(2)}}//封裝改變全選按鈕狀態方法function checkAll(s){for(let x=0;x<checkAlls.length;x++){checkAlls[x].checked=s}}//封裝小計方法function com(){for(let x=0;x<prices.length;x++)subtotals[x].innerHTML=(prices[x].innerHTML*inputs[x].value).toFixed(2)}}總結
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