freeCodeCamp/guide/chinese/user-experience-design/fitts-law/index.md

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---
title: Fitts Law
localeTitle: Fitts Law
---
## Fitts Law
Fitts定律提供了一个人体运动模型可以准确预测移动和选择目标所需的时间。在人机交互中Fitts定律通常应用于使用光标或其他类型指针通过图形用户界面的移动。
法律描述了一种简单的UI设计规则即应减少从一个点到下一个点的距离同时使目标对象更大以减少选择目标的时间量。理想情况下用户必须越往目标越远目标应该越大以使交互更加平滑。
![](http://cdn.sixrevisions.com/0128-05_chart.jpg)
#### 更多信息:
关于菲茨法律的一篇非常有力的文章https//www.interaction-design.org/literature/article/fitts-s-law-the-importance-of-size-and-distance-in-ui-design