代码：
<!DOCTYPE html> <html lang="zh-CN"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no" /> <title>Document</title> <style type="text/css"> * { margin: 0; padding: 0; } body { max-width: 640px; margin: 0 auto; background: #52007c; } .J_sex{ padding:30px 5px; } .downNav span { display: inline-block; width: 96%; height: 50px; margin-left: 2%; line-height: 50px; border-bottom: 1px solid #f5f5f5; text-align: center; } .downNav span:hover { background-color: #f5f5f5; } .downNav { width: 100%; height: 40%; background-color: #fff; position: fixed; z-index: 999; bottom: -40%; } .input { width: 39%; height: 25px; line-height: 25px; border-radius: 5px; background-color: #fff; padding: 0 5px; box-sizing: border-box; display: block; float: left; } .pf_body li span { display: inline-block; } .pfb_list { width: 22%; text-align: center; float: left; color: #fff; } .input em{ font-style: normal; display: inline-block; width: 100%; height: 25px;line-height: 25px;} </style> </head> <body> <div class="J_sex"> <div class="input"> <em class=" J_sex_down"></em> <input type="hidden" name="biz_user_sex" value="1" /> </div> <span class="pfb_list">性别</span> <div class="input"> <em class=" J_sex_down"></em> <input type="hidden" name="biz_user_sex2" value="1" /> </div> </div> <!-- 性别弹窗 --> <div class="bgDiv" id="bgDiv"></div> <div class="downNav" id="downNav"> <span data-value="1">男</span> <span data-value="0">女</span> </div> <script src="http://apps.bdimg.com/libs/jquery/1.9.1/jquery.min.js" type="text/javascript"></script> <script type="text/javascript"> $(function() { // 性别 var sex_down = $('.J_sex_down'); var bg = $('#bgDiv'); var downNav = $('#downNav'); sex_down.on('click', function() { $(this).parent().addClass("current"); bg.css({ display: "block", transition: "opacity .5s" }); downNav.css({ bottom: "0px", transition: "bottom 1s" }); $('#downNav span').on('click', function() { hideNav(); var value = $(this).data('value'); $(".J_sex .current").find("em").text($(this).html()) .parent().find('input').val(value) .parent().removeClass("current"); }); }); bg.on('click', function() { hideNav(); }); function hideNav() { downNav.css({ bottom: "-50%", webkitTransition: "bottom .5s", oTransition: "bottom .5s", mozTransition: "bottom .5s", transition: "bottom .5s" }); bg.css({ display: "none", transition: "display 1s" }); } }); </script> </body> </html>
效果图：
