js滚动到顶部底部代码

js滚动到顶部底部代码
1. <!DOCTYPE HTML>
2. <html>
3. <head>
4. <meta charset=UTF-8>
5. <title>SCROLL</title>
6. <style type="text/css">
7. </style>
8. <script type="text/javascript">
9. var goToWhere = function (where)
10. {
11. var me = this;
12. me.site = [];
13. me.sleep = me.sleep ? me.sleep : 16;
14. me.fx = me.fx ? me.fx : 6;
15. clearInterval (me.interval);
16. var dh = document.documentElement.scrollHeight || document.body.scrollHeight;
17. var height = !!where ? dh : 0;
18. me.interval = setInterval (function ()
19. {
20. var top = document.documentElement.scrollTop || document.body.scrollTop;
21. var speed = (height - top) / me.fx;
22. if (speed === me.site[0])
23. {
24. window.scrollTo (0, height);
25. clearInterval (me.interval);
26. }
27. window.scrollBy (0, speed);
28. me.site.unshift (speed);
29. }, me.sleep);
30. };
31. </script>
32. </head>
33. <body>
34. <div style="height: 1000px; text-align: center; font-size: 200px; font-weight: bold;">5</div>
35. <div style="height: 1000px; text-align: center; font-size: 200px; font-weight: bold;">4</div>
36. <div style="height: 1000px; text-align: center; font-size: 200px; font-weight: bold;">3</div>
37. <div style="height: 1000px; text-align: center; font-size: 200px; font-weight: bold;">2</div>
38. <div style="height: 1000px; text-align: center; font-size: 200px; font-weight: bold;">1</div>
39. <div style="height: 1000px; text-align: center; font-size: 200px; font-weight: bold;">0</div>
40. <div onclick="goToWhere(0)"
41. style="border: 1px solid red; height: 100px; 15px; position: fixed; cursor: pointer; right: 10px; bottom: 150px;">返回顶部</div>
42. <div onclick="goToWhere(1)"
43. style="border: 1px solid red; height: 100px; 15px; position: fixed; cursor: pointer; right: 10px; bottom: 30px;">返回底部</div>
44. </body>
45. </html>
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原文地址：https://www.cnblogs.com/telwanggs/p/6477507.html