实例
<!DOCTYPE html> <html> <head> <title>模拟加入购物车效果</title> <script src="https://code.jquery.com/jquery-3.3.1.min.js"></script> <style type="text/css"> * {margin: 0px auto;padding: 0px;} .top {width: 402px;height: 35px;line-height: 35px;text-align:center;margin-top: 50px; background: #C40000;color:#fff;} .main {width: 400px;height: 400px;border: 1px solid #C40000;} p {width: 400px;height: 26px;margin-top:10px;} b {width: 90px;height: 26px;line-height: 26px;text-align: center;font-size: 12px;color:#838383; border: 1px solid #ccc;float: left;margin-left: 5px;} span {width: 90px;height: 26px;line-height: 26px;text-align: center;font-size: 12px;color:#838383; border: 1px solid #ccc;display: block;float: left;margin-left: 5px;} span:hover {cursor: pointer;} button {width: 120px;height: 35px;background: #C40000;color: white;border: 0px;} button:hover {cursor: pointer;} .notice{border:0px;} .notice+input{width:60px;margin-left: 6px;text-align: center;} .on{border: 2px solid #C40000;width: 88px;height: 24px;} </style> </head> <body> <div class="top">请选择信息后加入购物车</div> <div class="main"> <p class="item" name="version"> <b class="notice">版本</b> <span>ONE A2001</span> <span>ONE A0001</span> <span>ONE A1001</span> </p> <p class="item" name="color"> <b class="notice">机身颜色</b> <span>白色</span> <span>黑色</span> <span>金色</span> </p> <p class="item" name="type"> <b class="notice">套餐类型</b> <span>标配</span> <span>套餐一</span> <span>套餐二</span> </p> <p class="item" name="ram"> <b class="notice">运行内存</b> <span>2GB</span> <span>3GB</span> <span>4GB</span> </p> <p class="item" name="rom"> <b class="notice">机身内存</b> <span>16GB</span> <span>32GB</span> <span>64GB</span> </p> <p class="item" name="location"> <b class="notice">产地</b> <span>中国大陆</span> <span>港澳台</span> </p> <p class="item" name="price"> <b class="notice">价格</b> <span>999元抢购</span> </p> <p class="item1" name="num"> <b class="notice">数量</b> <input type="number" value="1" > </p> <p style="margin-top:30px;margin-left:95px;"> <button class="bu1" id='sub'>加入购物车</button> </p> </div> <script> $(function(){ $('.item span').click(function(){ //当点击每个span的时候 if($(this).hasClass('on')){ //先检测一下是否选中,是否含有on $(this).removeClass('on'); //如果有了我就移除on }else{ $(this).addClass('on').siblings('span').removeClass('on'); // 如果没有on,我就添加上,同事删除同级span的on } }) $('#sub').click(function(){ var form = {}; //定义空的form对象,用于储存数据 var flag = true; //初始化能不能加入购物车状态 $('.item').each(function(){ //遍历每个item分类 if($(this).children('span.on').length ==0){ //获取每个item下面的span为on的,长度等于0,说明一个都没选中 flag = false; }else{ var key = $(this).attr('name'); //键名key,是获取item的name属性的值 var value = $(this).children('span.on').html(); //键值value,是item下有on效果的span的文本 form[key] = value; //储存在form对象里, } }) if($('.item1 input').val() <=0){ //获取数量的值,如果小于等于0,返回假 flag = false; }else{ form['num'] = $('.item1 input').val(); //大于0就储存到form对象里 } if(flag){ alert("购物车添加成功!"); //flag==true,成功时候提示 } }) }) </script> </body> </html>
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