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HTML代码:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="renderer" content="webkit"> <title>A03号桌</title> <link rel="stylesheet" href="resources/css/main.css"> </head> <body> <!--购物车--> <div class="shopCart"> <!--可以在table外面套一个div写死宽高并设置overflow-y:scroll;,出现大量内容时,让table纵向滚动--> <div class="cartBox"> <table class="cart"> <thead> <tr> <th>菜品名称</th> <th>数量</th> <th>单价</th> <th>价格</th> </tr> </thead> <tbody> <tr> <td>大闸蟹</td> <td> <button class="add">+</button> <span class="count">1</span> <button class="reduce">-</button> </td> <td> ¥<span class="price">68.00</span> </td> <td> ¥<span class="sub_total">68.00</span> </td> </tr> <tr> <td>在天愿作比翼鸟</td> <td> <button class="add">+</button> <span class="count">1</span> <button class="reduce">-</button> </td> <td> ¥<span class="price">68.00</span> </td> <td> ¥<span class="sub_total">68.00</span> </td> </tr> <tr> <td>红嘴绿鹦哥</td> <td> <button class="add">+</button> <span class="count">1</span> <button class="reduce">-</button> </td> <td> ¥<span class="price">68.00</span> </td> <td> ¥<span class="sub_total">68.00</span> </td> </tr> </tbody> </table> </div> <ul class="totalInfo clearfix"> <li> <span class="total"> 合计:<i>¥</i><b>242.00</b> </span> </li> <li> <button class="btn-save">保存</button> </li> </ul> </div> <script src="resources/js/jquery-1.8.3.min.js"></script> <script src="resources/js/shopCart.js"></script> </body> </html>
JS代码:
/****点击增加按钮****/ $('.add').click(function(){ //修改数量 var n=$(this).next().html(); var num=parseInt(n)+1; $(this).next().html(num); //计算价格 var c= $(this).parent().siblings().children('.price').html(); parseInt(c); var subPrice = num * c; var sub_price = subPrice.toFixed(2); //保留小数点后面两位小数 $(this).parent().siblings().children('.sub_total').html(sub_price); //计算总价 var total=0; $('.sub_total').each(function(){ var price=parseInt($(this).html()); total+=price; var total_price = total.toFixed(2); $('.total b').html(total_price); }); }); /****点击减少按钮****/ $('.reduce').click(function(){ //修改数量 var n=$(this).prev().html(); var num=parseInt(n)-1; if(num==0){return;}//数量减到0就能再减了 $(this).prev().html(num); //计算价格 var c= $(this).parent().siblings().children('.price').html(); parseInt(c); var subPrice = num * c; subPrice.toFixed(2); var sub_price = subPrice.toFixed(2); $(this).parent().siblings().children('.sub_total').html(sub_price); //计算总价 var total=0; $('.sub_total').each(function(){ var price=parseInt($(this).html()); total+=price; var total_price = total.toFixed(2); $('.total b').html(total_price); }); });
考虑到篇幅问题,没有贴出CSS代码,最终页面截图如下:
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