计算价格取决于没有按钮的选择

Question

我想添加价格并乘以 if 语句来澄清这里是变量的一些价格私有 = 成人 100，children 50 或共享 = 成人 40，children 30 成人 atv=100 children 80 或无 atv=0

如果只有成人在网上预订，我希望价格的反应类似于两个选择的总和乘以成人示例的数量与亚视分享的成人书所以 40+100=140 * 成人人数

如果成人和 children 正在与 ATV 共享预订，那么它的反应应该像 40+100=140 * 成人人数 30+80=110 * 数量 children 结果应该是 (110 * children 的数量) + (140 * 成人的数量)

<!doctype html>
<html lang="en">

<head>
  <title>Title</title>
  <!-- Required meta tags -->
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

  <!-- Bootstrap CSS -->
  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
  <style>
    .small-img-group {
      display: flex;
      justify-content: space-between;
    }
    
    .small-img-col {
      flex-basis: 24%;
      cursor: pointer;
    }
    
    .counter1 {
      float: left;
      display: flex;
      justify-content: space-between;
      overflow-x: hidden;
      overflow-y: hidden;
    }
    
    .counter2 {
      float: left;
      display: flex;
      justify-content: space-between;
      overflow-x: hidden;
      overflow-y: hidden;
      padding-left: 15px;
    }
    
    .up,
    .down {
      display: inline-block;
      color: rgb(0, 0, 0);
      font-size: 20px;
      margin: 1px 1px;
      cursor: pointer;
      width: 15px;
      line-height: 14px;
      height: 16px;
      text-align: center;
      font-weight: bold;
      border: 1px solid #000;
      user-select: none;
    }
    
    .up:hover,
    .down:hover {
      color: #fd0b3f;
      text-align: center;
    }
    
    .adults {
      padding-right: 5px;
    }
    
    .children {
      padding-right: 5px;
    }
    
    input {
      appearance: none;
      height: 21px;
      text-align: center;
      width: 42px;
      line-height: 24px;
      font-size: 15px;
      border-radius: 5px;
    }
    
    .container {
      display: flex;
    }
    
    input[type="radio"] {
      display: none;
    }
    
    label[for=private] {
      position: relative;
      color: orangered;
      font-size: 20px;
      border: 2px solid orangered;
      border-radius: 5px;
      align-items: left;
      display: flex;
      cursor: pointer;
      margin-right: 10px;
    }
    
    label[for=shared] {
      position: relative;
      color: orangered;
      font-size: 20px;
      border: 2px solid orangered;
      border-radius: 5px;
      align-items: left;
      display: flex;
      cursor: pointer;
    }
    
    input[type="radio"]:checked+label {
      background-color: orangered;
      color: white;
    }
    
    input[type="radio"]:checked+label:before {
      height: 16px;
      width: 16px;
      border: 10px solid white;
      background-color: orangered;
    }
  </style>

</head>

<body>
  <section class="container sproduct my-5 pt-5">
    <div class="row mt-5">
      <div class="col-lg-5 col-md-12 col-12">
        <img class="img-fluid w-100 pb-1" src="https://skylandtourism.com/wp-content/uploads/2018/03/Morning-Safari.jpg" alt="" id="MainImg" width="450">

        <div class="small-img-group">
          <div class="small-img-col">
            <img src="https://media.tacdn.com/media/attractions-splice-spp-674x446/09/99/99/87.jpg" width="100%" class="small-img" alt="">
          </div>
          <div class="small-img-col">
            <img src="https://skylandtourism.com/wp-content/uploads/2018/03/Morning-Safari.jpg" width="100%" class="small-img" alt="">
          </div>
          <div class="small-img-col">
            <img src="https://skylandtourism.com/wp-content/uploads/2018/03/Morning-Safari.jpg" width="100%" class="small-img" alt="">
          </div>
          <div class="small-img-col">
            <img src="https://skylandtourism.com/wp-content/uploads/2018/03/Morning-Safari.jpg" width="100%" class="small-img" alt="">
          </div>
        </div>
      </div>
      <div class="col-lg-6 col-md-12 col-12">
        <h6>Home / Morning Safari</h6>
        <h3>Morning Safari</h3>
        <h2> <label> Total:</label><label class="total Price"></label> </h2>
        <div class="counter1">
          <Label class="Adults">Adults</Label>
          <div class='down' onclick='decreaseCount(event, this)'>-</div>
          <input type='text' value='1' readonly>
          <div class='up' onclick='increaseCount(event, this)'>+</div>
        </div>
        <div class="counter2">
          <Label class="Children">Children</Label>
          <div class='down' onclick='decreaseCount2(event, this)'>-</div>
          <input type='text' value='0' readonly>
          <div class='up' onclick='increaseCount(event, this)'>+</div>
        </div>
        <div class="container" style="padding-left: 0;padding-top: 5px;">
          <div>
            <input type="radio" name="occupancy" id="private" checked="checked">
            <label for="private">Private</label>
            <input type="radio" name="occupancy" id="shared">
            <label for="shared">Shared</label>
          </div>
          <div>
            <input type="radio" name="atv" id="withatv" checked="checked">
            <label for="withatv">With ATV</label>
            <input type="radio" name="atv" id="withoutatv">
            <label for="withoutatv">Without ATV</label>
          </div>

        </div>

      </div>
    </div>
  </section>

  <!-- Optional JavaScript -->
  <!-- jQuery first, then Popper.js, then Bootstrap JS -->
  <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
  <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
  <script>
    function increaseCount(e, el) {
      var input = el.previousElementSibling;
      var value = parseInt(input.value, 10);
      value = isNaN(value) ? 0 : value;
      value++;
      input.value = value;
    }

    function decreaseCount(e, el) {
      var input = el.nextElementSibling;
      var value = parseInt(input.value, 10);
      if (value > 1) {
        value = isNaN(value) ? 0 : value;
        value--;
        input.value = value;
      }
    }

    function decreaseCount2(e, el) {
      var input = el.nextElementSibling;
      var value = parseInt(input.value, 10);
      if (value > 0) {
        value = isNaN(value) ? 0 : value;
        value--;
        input.value = value;
      }
    }

    var MainImg = document.getElementById('MainImg');
    var smallimg = document.getElementsByClassName('small-img');

    smallimg[0].onclick = function() {
      MainImg.src = smallimg[0].src;
    }
    smallimg[1].onclick = function() {
      MainImg.src = smallimg[1].src;
    }
    smallimg[2].onclick = function() {
      MainImg.src = smallimg[2].src;
    }
    smallimg[3].onclick = function() {
      MainImg.src = smallimg[3].src;
    }
  </script>
</body>

</html>

Answer 1

我做了多项更改以便能够以更简单的方式使用它：

第 0 步 - HTML 在 adults、children 输入中包含 id（以便能够获取这些值）
第 1 步 - HTML 每次修改后（更改 children/adult、atv/no atv、private/shared）渲染不完全
第 2 步 - JS 计算新总数并渲染

Plnkr 示例：https://plnkr.co/edit/XOebeFyHNXFswNI4

第 0 步和第 1 步：HTML：

                onclick="updateTotal()"
              />
              <label for="withatv">With ATV</label>
              <input
                type="radio"
                name="atv"
                id="withoutatv"
                onclick="updateTotal()"
              />
              <label for="withoutatv">Without ATV</label>
            </div>
          </div>

第 2 步：

      function calculateTotal() {
        // Define based Prices
        const privateAdultPrice = 100;
        const sharedAdultPrice = 40;
        const privateChildrenPrice = 50;
        const sharedChildrenPrice = 30;

        const withAtvAdultPrice = 100;
        const withAtvChildrenPrice = 80;

        const noAtvPrice = 0;

        // Get the amount of adults and guests
        const adults = +document.querySelector('#adults').value;
        const children = +document.querySelector('#children').value;

        // Get the type of trip
        const isPrivate = document.getElementById('private').checked;
        const isWithAtv = document.getElementById('withatv').checked;        

        // Calculate the specific charge per type of user and type of trip
        const adultTripPrice = isPrivate ? privateAdultPrice : sharedAdultPrice;
        const childrenTripPrice = isPrivate ? privateChildrenPrice : sharedChildrenPrice;
        // Calculate the specific charge per type of user and the vehicule\
        const adultVehiclePrice = isWithAtv ? withAtvAdultPrice : noAtvPrice;
        const childrenVehiclePrice = isWithAtv ? withAtvChildrenPrice : noAtvPrice;      

        // Finally, do the maths
        const adultPrice = adults * (adultTripPrice + adultVehiclePrice)
        const childrenPrice = children * (childrenTripPrice + childrenVehiclePrice)

        // return the value
        return adultPrice + childrenPrice;                  
      }

      function updateTotal() {
        const total = calculateTotal();
        console.log(total);
        document.querySelector('#totalPrice').innerHTML = total;
      }

计算价格取决于没有按钮的选择

calculate price depend on selection without button

html

javascript

jquery

sum

multiplication