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HTML

              
                 <div class="page-header">
    <h1>jQuery 購物車模組
      <div style="float: right; cursor: pointer;">
        <span class="glyphicon glyphicon-shopping-cart my-cart-icon"><span class="badge badge-notify my-cart-badge"></span></span>
      </div>
    </h1>
  </div> 
<div class="row">
    <div class="col-sm-6 col-md-3 text-center">
      <img src="https://www.jqueryscript.net/demo/Simple-Shopping-Cart-Plugin-With-jQuery-Bootstrap-mycart/images/img_1.png" width="150px" height="150px">
      <br>
      產品1 - <strong>$10</strong>
      <br>
      <button class="btn btn-danger my-cart-btn" data-id="1" data-name="product 1" data-summary="summary 1" data-price="10" data-quantity="1" data-image="https://www.jqueryscript.net/demo/Simple-Shopping-Cart-Plugin-With-jQuery-Bootstrap-mycart/images/img_1.png">加入購物車</button>
      <a href="#" class="btn btn-info">產品內容</a>
    </div>

    <div class="col-sm-6 col-md-3 text-center">
      <img src="https://www.jqueryscript.net/demo/Simple-Shopping-Cart-Plugin-With-jQuery-Bootstrap-mycart/images/img_2.png" width="150px" height="150px">
      <br>
      產品 2 - <strong>$20</strong>
      <br>
      <button class="btn btn-danger my-cart-btn" data-id="2" data-name="product 2" data-summary="summary 2" data-price="20" data-quantity="1" data-image="https://www.jqueryscript.net/demo/Simple-Shopping-Cart-Plugin-With-jQuery-Bootstrap-mycart/images/img_2.png">加入購物車</button>
      <a href="#" class="btn btn-info">產品內容</a>
    </div>

    <div class="col-sm-6 col-md-3 text-center">
      <img src="https://www.jqueryscript.net/demo/Simple-Shopping-Cart-Plugin-With-jQuery-Bootstrap-mycart/images/img_3.png" width="150px" height="150px">
      <br>
      產品 3 - <strong>$30</strong>
      <br>
      <button class="btn btn-danger my-cart-btn" data-id="3" data-name="product 3" data-summary="summary 3" data-price="30" data-quantity="1" data-image="https://www.jqueryscript.net/demo/Simple-Shopping-Cart-Plugin-With-jQuery-Bootstrap-mycart/images/img_3.png">加入購物車</button>
      <a href="#" class="btn btn-info">產品內容</a>
    </div>

    <div class="col-sm-6 col-md-3 text-center">
      <img src="https://www.jqueryscript.net/demo/Simple-Shopping-Cart-Plugin-With-jQuery-Bootstrap-mycart/images/img_4.png" width="150px" height="150px">
      <br>
      產品 4 - <strong>$40</strong>
      <br>
      <button class="btn btn-danger my-cart-btn" data-id="4" data-name="product 4" data-summary="summary 4" data-price="40" data-quantity="1" data-image="https://www.jqueryscript.net/demo/Simple-Shopping-Cart-Plugin-With-jQuery-Bootstrap-mycart/images/img_4.png">加入購物車</button>
      <a href="#" class="btn btn-info">產品內容</a>
    </div>
</div>
              
            
!

CSS

              
                h1{text-align:center;}
.badge-notify{
    background:red;
    position:relative;
    top: -20px;
    right: 10px;
  }
  .my-cart-icon-affix {
    position: fixed;
    z-index: 999;
  }
              
            
!

JS

              
                 $(function () {

    var goToCartIcon = function($addTocartBtn){
      var $cartIcon = $(".my-cart-icon");
      var $image = $('<img width="30px" height="30px" src="' + $addTocartBtn.data("image") + '"/>').css({"position": "fixed", "z-index": "999"});
      $addTocartBtn.prepend($image);
      var position = $cartIcon.position();
      $image.animate({
        top: position.top,
        left: position.left
      }, 500 , "linear", function() {
        $image.remove();
      });
    }

    $('.my-cart-btn').myCart({
      currencySymbol: '$',
      classCartIcon: 'my-cart-icon',
      classCartBadge: 'my-cart-badge',
      classProductQuantity: 'my-product-quantity',
      classProductRemove: 'my-product-remove',
      classCheckoutCart: 'my-cart-checkout',
      affixCartIcon: true,
      showCheckoutModal: true,
      numberOfDecimals: 2,
      clickOnAddToCart: function($addTocart){
        goToCartIcon($addTocart);
      },
      afterAddOnCart: function(products, totalPrice, totalQuantity) {
        console.log("afterAddOnCart", products, totalPrice, totalQuantity);
      },
      clickOnCartIcon: function($cartIcon, products, totalPrice, totalQuantity) {
        console.log("cart icon clicked", $cartIcon, products, totalPrice, totalQuantity);
      },
      checkoutCart: function(products, totalPrice, totalQuantity) {
        var checkoutString = "Total Price: " + totalPrice + "\nTotal Quantity: " + totalQuantity;
        checkoutString += "\n\n id \t name \t summary \t price \t quantity \t image path";
        $.each(products, function(){
          checkoutString += ("\n " + this.id + " \t " + this.name + " \t " + this.summary + " \t " + this.price + " \t " + this.quantity + " \t " + this.image);
        });
        alert(checkoutString)
        console.log("checking out", products, totalPrice, totalQuantity);
      },
      getDiscountPrice: function(products, totalPrice, totalQuantity) {
        console.log("calculating discount", products, totalPrice, totalQuantity);
        return totalPrice * 0.5;
      }
    });

    $("#addNewProduct").click(function(event) {
      var currentElementNo = $(".row").children().length + 1;
      $(".row").append('<div class="col-md-3 text-center"><img src="images/img_empty.png" width="150px" height="150px"><br>product ' + currentElementNo + ' - <strong>$' + currentElementNo + '</strong><br><button class="btn btn-danger my-cart-btn" data-id="' + currentElementNo + '" data-name="product ' + currentElementNo + '" data-summary="summary ' + currentElementNo + '" data-price="' + currentElementNo + '" data-quantity="1" data-image="images/img_empty.png">Add to Cart</button><a href="#" class="btn btn-info">Details</a></div>')
    });
  });
              
            
!
999px

Console