HTML部分：
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <script src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js"></script> </head> <body> <div> <h2>scroll</h2> <div id="nav"> <div class="f1">floor1</div> <div class="f2">floor2</div> <div class="f3">floor3</div> <div class="f4">floor4</div> <div class="f5">floor5</div> </div> <p> 页面结构 </p> <div class="main"> <div id="f1">测试1</div> <div id="f2">测试2</div> <div id="f3">测试3</div> <div id="f4">测试4</div> <div id="f5">测试5</div> </div> </div> </body> </html>
CSS部分：
<style> .main div { height: 970px; width: 300px; margin: 20px; background-color: #C0C0C0; } #nav { position: fixed; width: 100px; height: 200px; top: 40%; right: 10px; } #nav div { cursor: pointer; text-align: center; } </style>
JS部分：
<script> $(function () { $(window).scroll(function () {//为页面添加页面滚动监听事件 var wst = $(window).scrollTop(); //滚动条距离顶端值 for (var i = 1; i < 6; i++) { //加循环 if ($("#f" + i).offset().top <= wst + 10) { //判断滚动条位置 $('#nav div').css("background-color", "white"); $(".f" + i).css("background-color", "red"); } } }); $('#nav div').click(function () { $('html').animate({scrollTop: $("#" + this.className).offset().top}, 500); // $("#" + this.className)[0].scrollIntoView(true);//h5 scrollIntoView() }); }); </script>