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js簡易版購物車功能

更新時間：2017年06月17日 09:46:10 作者：yesbuy201701

這篇文章主要為大家分享了js簡易版的購物車，具有一定的參考價值，感興趣的小伙伴們可以參考一下

本文實(shí)例為大家分享了js購物車功能的具體代碼，供大家參考，具體內(nèi)容如下

<!DOCTYPE html>
<html>

  <head>
    <meta charset="UTF-8">
    <title></title>
    <style>
      * {
        margin: 0;
        padding: 0;
      }

      li {
        list-style: none;
      }

      li {
        float: left;
        width: 200px;
        border: 1px #000 solid;
        margin: 10px;
      }

      li img {
        width: 200px;
      }

      p {
        height: 20px;
        border-bottom: 1px #333 dashed;
      }

      #bus {
        width: 600px;
        border: 1px #000 solid;
        height: 300px;
        clear: both;
      }

      .box1 {
        float: left;
        width: 200px;
      }

      .box2 {
        float: left;
        width: 200px;
      }

      .box3 {
        float: left;
        width: 200px;
      }

      #allMoney {
        float: right;
      }
    </style>
    <script>
      window.onload = function() {
        var oList = document.getElementById('list');
        var aLi = oList.getElementsByTagName('li');
        var oBus = document.getElementById('bus');

        var obj = {};
        var iNum = 0;
        var allMoney = 0;

        for (var i = 0; i < aLi.length; i++) {
          aLi[i].ondragstart = function(ev) {
            //點(diǎn)擊拖拽元素的時候，就設(shè)置數(shù)據(jù)，以后放到購物車的時候數(shù)據(jù)就可以傳過去了
            var ev = ev || window.event;
            var aP = this.getElementsByTagName('p');
            ev.dataTransfer.setData('title', aP[0].innerHTML);
            ev.dataTransfer.setData('price', aP[1].innerHTML);
            ev.dataTransfer.setDragImage(this, 0, 0);
          }
        }

        oBus.ondragover = function(ev) {
          //阻止鼠標(biāo)默認(rèn)事件
          var ev = ev || event;
          ev.preventDefault();
        };
        oBus.ondrop = function(ev) {
          var ev = ev || event;
          var title = ev.dataTransfer.getData('title');
          var price = ev.dataTransfer.getData('price');  

          if(!obj[title]){

            var oP = document.createElement('p');
            var oSpan = document.createElement('span');
            oSpan.className = 'box1';
            oSpan.innerHTML = 1;
            oP.appendChild(oSpan);

            var oSpan = document.createElement('span');
            oSpan.className = 'box2';
            oSpan.innerHTML = title;
            oP.appendChild(oSpan);

            var oSpan = document.createElement('span');
            oSpan.className = 'box3';
            oSpan.innerHTML = price;
            oP.appendChild(oSpan);

            oBus.appendChild(oP);

            obj[title] = 1;
          }else{
            var box1 = document.getElementsByClassName('box1');
            var box2 = document.getElementsByClassName('box2');
            for(var i=0;i<box2.length;i++){
              if(box2[i].innerHTML == title){
                box1[i].innerHTML = parseInt(box1[i].innerHTML) + 1;
              };
            };

          };
          //總價
          if(!allMoney){
            allMoney = document.createElement('div');
            allMoney.id = 'allMoney';
          }
          iNum += parseInt(price);
          allMoney.innerHTML = '￥'+iNum;
          oBus.appendChild(allMoney);
        };
      };
    </script>
  </head>

  <body>
    <ul id="list">
      <li draggable="true">
        <img src="img/img1.jpg" />
        <p>javascript語言精粹</p>
        <p>40￥</p>
      </li>
      <li draggable="true">
        <img src="img/img2.jpg" />
        <p>javascript權(quán)威指南</p>
        <p>120￥</p>
      </li>
      <li draggable="true">
        <img src="img/img3.jpg" />
        <p>精通javascript</p>
        <p>35￥</p>
      </li>
      <li draggable="true">
        <img src="img/img4.jpg" />
        <p>DOM編程藝術(shù)</p>
        <p>45￥</p>
    </ul>
    <div id="bus"></div>
  </body>

</html>

以上就是本文的全部內(nèi)容，希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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