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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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>
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