博客列表 >获取滚动值案例、点击商品选中效果——2019年1月22日

获取滚动值案例、点击商品选中效果——2019年1月22日

离歌浅唱醉人心丶的博客
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2019年01月24日 14:17:15577浏览

获取滚动值实现简单的布局:


实例

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>获取滚动值案例</title>
    <script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        .content{
            width: 100%;
            height: 60px;
            background: rgba(160,3,162,0.1);
            box-shadow: 1px 3px 7px #ccc;
            line-height: 60px;
            position: fixed;
        }
        .content_2{background: rgba(160,3,162,0.4)}
        form {
            width: 500px;height: 35px;
            position: relative;
            margin: 0 auto;
        }
        input{
            width:480px;height: 35px;
            border-radius: 20px;
            border:none;
            outline: none;
            padding-left:20px;
        }
        button{
            width: 70px;height:35px;
            border-top-right-radius: 20px;
            border-bottom-right-radius: 20px;
            border: none;
            color: #fff;
            position: absolute;right:0;top:12px;
            outline: none;
            font-weight: bold;
            background: rgba(160,3,162,0.4);
        }
        .pic{
            width: 70%;height: 580px;
            background: url(static/images/1.jpg);
            margin: 0 auto;
        }
        .details{
            width: 70%;height:1200px;
            background:rgba(108,108,106,0.1);
            margin: 0 auto;
        }
    </style>
</head>
<body>
<!--导航栏-->
<div class="content">
    <form action="">
        <input type="text" placeholder="请输入关键字~">
        <button>搜素</button>
    </form>
</div>
<!--轮播图-->
<div class="pic"></div>
<!--页面详情-->
<div class="details"></div>

<script>
    $(function () {
        // scroll 事件  当用户滚动指定的元素时触发
        $(window).scroll(function () {
            // 获取浏览器滚动条到顶部的垂直高度
            if($(window).scrollTop()>60){
                $('.content').css('display','none')
            }else{
                $('.content').css('display','block')
            }
            if($(window).scrollTop()>580){
                $('.content').addClass('content_2').css('display','block')
            }else{
                $('.content').removeClass('content_2')
            }
        })
    })
</script>
</body>
</html>

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点击 "运行实例" 按钮查看在线实例


加入购物车案例:

实例

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>点击商品选中效果</title>
    <script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
    <!--<script src = "static/js/jquery-3.3.1.min.js"></script>-->
    <style>
        * {margin: 0 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: 0;
        }
        button:hover {cursor: pointer;}
        .notice{
            border:0px;
        }
        .select{
            border:2px solid #C40000;
            width: 88px;
            height: 24px;
            line-height: 24px;
            color: red;
        }
    </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" style="width:40px;height:26px;">
    </p>

    <p style="margin-top:30px;margin-left:95px;">
        <button class="bu1" id='sub'>加入购物车</button>
    </p>
</div>

<script>
    $(function() {
        $('span').click(function(){
            if($(this).hasClass('select')){// 匹配span中是否带有class为select
                $(this).removeClass('select');//含有就清除
            }else{
                // 没有就添加上select的class名,同时匹配同级span,清除同级其他span中的选中样式
                $(this).addClass('select').siblings('span').removeClass('select');
            }
        });
        $('#sub').click(function () {
            let form = {}; //创建空对象
            let flag = true; //判断能否加入购物车
            // 判断p标签里面的span是否被选择
            $('.item').each(function () {
                if ($(this).children('span.select').length != 1){
                    alert('请选择: ' + $(this).children('b').html());
                    flag = false;
                    return flag;
                }else {
                    let key = $(this).attr('name');
                    let v = $(this).children('span.select').html();
                    form[key] = v;
                }
            });
            if ($('.item1 input').val() <= 0){
                alert('数量最少为1')
            }else {
                form['num'] = $('.item1 input').val();
                console.log(form);
            }
            if (flag){
                alert('加入购物车成功!');
            }
        });

    });
</script>
</body>
</html>

运行实例 »

点击 "运行实例" 按钮查看在线实例



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