插件：SmoothScroll.js
CDN：https://cdnjs.com/libraries/smoothscroll
用法大概就下边这样了：
<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title><style>div {height: 600px;border: 1px solid black;margin: 5px;}</style><script src="./js/SmoothScroll.js"></script></head><body><div></div><div></div><div></div><div></div><div></div><div></div><script>SmoothScroll({frameRate: 150,animationTime: 1000,stepSize: 100,pulseAlgorithm: 1,pulseScale: 4,pulseNormalize: 1,accelerationDelta: 50,accelerationMax: 3,keyboardSupport: 1,arrowScroll: 50,fixedBackground: 1})</script></body>
</html>
