bootstrap-监听滚动实现头部跟随滚动
实现案例
<body data-spy="scroll" data-target="#bs-example-navbar-collapse-1"> <div > <div class='menu'> <nav class="navbar navbar-default" role="navigation"> <div class="container"> <div class="navbar-header"> <a class="navbar-brand" href="#" >植被数据录入</a> </div> <div class="collapse navbar-collapse" > <!-- <button type="button" class="close" data-dismiss="modal" data-target="#mychart2-zb"><span aria-hidden="true">×</span></button> --> <button type="button" class="btn btn-primary" data-dismiss="modal" data-target="#mychart2-zb"><span aria-hidden="true">保存</span></button> <button type="button" class="btn btn-primary" data-dismiss="modal" data-target="#mychart2-zb"><span aria-hidden="true">取消</span></button> </div> </div> </nav> </div> </div> </body>
css控制样式
.menu{ width:100%; z-index:99; } .menuFixed{ position:fixed; top:0; left:0; } #menu_wrap{ height:50px; width:100%; }
js监听
<script> $(window).scroll(function () { var menu_top = $('#menu_wrap').offset().top; if ($(window).scrollTop() >= menu_top) { $('.menu').addClass('menuFixed') } else { $('.menu').removeClass('menuFixed') } }); </script>
导入js
<script type="text/javascript" src="../bower_components/jquery/dist/jquery.min.js"></script> <script type="text/javascript" src="../bower_components/bootstrap/dist/js/bootstrap.min.js"></script>
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