ホームページ  >  記事  >  ウェブフロントエンド  >  JS はショッピング カートの特殊効果を実装します

JS はショッピング カートの特殊効果を実装します

高洛峰
高洛峰オリジナル
2017-02-04 13:27:171084ブラウズ

効果:

1. [すべて選択] ボタンをクリックしてすべてを選択し、もう一度クリックしてすべての選択を解除します

2. 数量「+」「-」をクリックすると、自動的に計算されます。そして合計は更新され続けます。数量が 1 より大きい場合は「-」が表示されます。 1以下の場合、「-」が消えます

3. [削除]をクリックして削除機能を実現します。

4. [すべて選択] の横にある削除ボタンをクリックして、すべてを削除します。

5. 商品を選択後、選択した商品をクリックすると選択した商品が表示されます

6. 選択した商品の選択を解除できます。

<!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(&#39;*&#39;);
      for (var i = 0, len = els.length; i < len; i++) {
        if (els[i].className === cls
          || els[i].className.indexOf(cls + &#39; &#39;) >= 0
          || els[i].className.indexOf(&#39; &#39; + cls + &#39; &#39;) >= 0
          || els[i].className.indexOf(&#39; &#39; + cls) >= 0) {
          ret.push(els[i]);
        }
      }
      return ret;
    }
  }
  var cartTable = document.getElementById(&#39;cartTable&#39;);
  var tr = cartTable.children[1].rows;
  var checkInputs = document.getElementsByClassName(&#39;check&#39;);
  var checkAllInputs = document.getElementsByClassName(&#39;check-all&#39;);
  var selectedTotal = document.getElementById(&#39;selectedTotal&#39;);
  var priceTotal = document.getElementById(&#39;priceTotal&#39;);
  var selected = document.getElementById(&#39;selected&#39;);
  var foot = document.getElementById(&#39;foot&#39;);
  var selectedViewList = document.getElementById(&#39;selectedViewList&#39;);
  var deleteAll = document.getElementById(&#39;deleteAll&#39;);
  //计算
  function getTotal() {
    var seleted = 0;
    var price = 0;
    var HTMLstr = &#39;&#39;;
    for (var i = 0, len = tr.length; i < len; i++) {
      if (tr[i].getElementsByTagName(&#39;input&#39;)[0].checked) {
        tr[i].className = &#39;on&#39;;
        seleted += parseInt(tr[i].getElementsByTagName(&#39;input&#39;)[1].value);
        price += parseFloat(tr[i].cells[4].innerHTML);
        HTMLstr += &#39;<div><img src="&#39; + tr[i].getElementsByTagName(&#39;img&#39;)[0].src + &#39;"><span class="del" index="&#39; + i + &#39;">取消选择</span></div>&#39;
      }
      else {
        tr[i].className = &#39;&#39;;
      }
    }
    selectedTotal.innerHTML = seleted;
    priceTotal.innerHTML = price.toFixed(2);
    selectedViewList.innerHTML = HTMLstr;
 
    if (seleted == 0) {
      foot.className = &#39;foot&#39;;
    }
  }
  //小计
  function getSubTotal(tr) {
    var tds = tr.cells;
    var price = parseFloat(tds[2].innerHTML);
    var count = parseInt(tr.getElementsByTagName(&#39;input&#39;)[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 === &#39;check-all check&#39;) {
        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 == &#39;foot&#39;) {
      if (selectedTotal.innerHTML != 0) {
        foot.className = &#39;foot show&#39;;
      }
    }
    else {
      foot.className = &#39;foot&#39;;
    }
  }
  selectedViewList.onclick = function (e) {
    e = e || window.event;
    var el = e.srcElement;
    if (el.className == &#39;del&#39;) {
      var index = el.getAttribute(&#39;index&#39;);
      var input = tr[index].getElementsByTagName(&#39;input&#39;)[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(&#39;input&#39;)[1];
      var val = parseInt(input.value);
      var reduce = this.getElementsByTagName(&#39;span&#39;)[1];
      switch (cls) {
        case &#39;add&#39;:
          input.value = val + 1;
          reduce.innerHTML = &#39;-&#39;;
          getSubTotal(this);
          break;
        case &#39;reduce&#39;:
          if (val > 1) {
            input.value = val - 1;
          }
          if (input.value <= 1) {
            reduce.innerHTML = &#39;&#39;;
          }
          getSubTotal(this);
          break;
        case &#39;delete&#39;:
          var conf = confirm(&#39;确定要删除吗?&#39;);
          if (conf) {
            this.parentNode.removeChild(this);
          }
          break
        default :
          break;
      }
      getTotal();
    }
    tr[i].getElementsByTagName(&#39;input&#39;)[1].onkeyup = function () {
      var val = parseInt(this.value);
      var tr = this.parentNode.parentNode
      var reduce = tr.getElementsByTagName(&#39;span&#39;)[1];
      if (isNaN(val) || val < 1) {
        val = 1;
      }
      this.value = val;
      if (val <= 1) {
        reduce.innerHTML = &#39;&#39;;
      }
      else {
        reduce.innerHTML = &#39;-&#39;;
      }
      getSubTotal(tr);
      getTotal();
    }
  }
  deleteAll.onclick = function () {
    if (selectedTotal.innerHTML != &#39;0&#39;) {
      var conf = confirm(&#39;确定删除吗?&#39;);
      if (conf) {
        for (var i = 0; i < tr.length; i++) {
          var input = tr[i].getElementsByTagName(&#39;input&#39;)[0];
          if (input.checked) {
            tr[i].parentNode.removeChild(tr[i]);
            i--;
          }
        }
      }
    }
  }
  checkAllInputs[0].checked = true;
  checkAllInputs[0].onclick();
}
</script>
</body>
</html>

以上がこの記事の内容です。この記事の内容が皆さんの勉強や仕事に少しでもお役に立てれば幸いです。また、PHP中国語ウェブサイトも応援したいと思っています。

ショッピング カートの特殊効果の JS 実装に関連するその他の記事については、PHP 中国語 Web サイトに注目してください。

声明:
この記事の内容はネチズンが自主的に寄稿したものであり、著作権は原著者に帰属します。このサイトは、それに相当する法的責任を負いません。盗作または侵害の疑いのあるコンテンツを見つけた場合は、admin@php.cn までご連絡ください。