Pure jquery implements imitation of Taobao shopping cart settlement_jquery

<script type="text/javascript">

  $(function(){

    //计算总金额

    function totalMoney(){

      var total_price = 0;

      var total_count = 0;

      $(".d1-input").each(function(){

        if($(this).hasClass('status')) {

          var obj1 = $(this).parent().siblings(".d4").find(".count").val();//获取一行的商品数量

          total_count += parseInt(obj1);

          var obj2= $(this).parent().siblings(".d5").find(".cart-price").text();//获取一行的金额

          total_price += parseInt(obj2);

        }

      });

      $(".item").text(total_count);//将计算出的总金额显示

      $(".total").text(total_price);//将计算出的总数量显示

    }

    //全选

    $(".d-input").toggle( function(){

      $(this).addClass("status");

      $(".sc-mid-list .d1-input").addClass("status");//添加勾选样式

      $(".sc-mid-list").addClass("mouseover");

      totalMoney();

      },

      function(){

      $(this).removeClass("status");

      $(".sc-mid-list .d1-input").removeClass("status");//取消勾选样式

      $(".sc-mid-list").removeClass("mouseover");

      totalMoney();

    });

    // 单选

    $(".d1-input").toggle( function(){

      $(this).addClass("status");//添加勾选样式

      $(this).parents(".sc-mid-list").addClass("mouseover");

      totalMoney();

      },

      function(){

      $(this).removeClass("status");//取消勾选样式

      $(this).parents(".sc-mid-list").removeClass("mouseover");

      totalMoney();

    });

    // 减号样式

    function count(){

      $(".count").each(function(){

        var num = $(this).val();

        if (num == 1) {

          $(this).siblings(".reduce").removeClass("two").addClass("one");

          $(this).siblings(".reduce").attr("disabled","disabled");

        } else {

          $(this).siblings(".reduce").removeClass("one").addClass("two");

        }

      })//根据数量是否为1，改变减号的样式

    }

    // 加

    $(".sc-mid-list .add").click(function(){

      var input = $(this).siblings(".count");

      var obj = $(this).parents(".d4");

      var per = parseFloat(obj.siblings(".d3").find(".per").text());//获取当前一行的单价

      var num = '';

      var price = '';

      input.attr("value", parseInt(input.attr("value")) + 1 );//数量加1

      num = input.attr("value");

      price = num*per;//

      obj.siblings(".d5").find(".cart-price").text(price);

      count();

      totalMoney();

    })

    // 减

    $(".sc-mid-list .reduce").click(function(){

      var input = $(this).siblings(".count");

      var obj = $(this).parents(".d4");

      var per = parseFloat(obj.siblings(".d3").find(".per").text());//获取当前一行的单价

      var num = '';

      var price = '';

      var Val = parseInt(input.attr("value"));

      if(Val <= 1){

        Val = 2;

        }

      input.attr("value", parseInt(Val) - 1 );//数量减1

      num = input.attr("value");

      price = num*per;//

      obj.siblings(".d5").find(".cart-price").text(price);

      count();

    })

  })

</script>