scroll bar initial range

Question

I am currently learning about scroll bars, the documentation says the following:

The initial range depends on the scroll bar. Standard scroll bars have an initial range of 0 through 100;

Wouldn't this mean that there are 101 values to set for the position of the scroll box? Or is this a typo and they mean 0 through 99?

Answer 1

假设范围为[min, max]，页面为page， 职位的可能值应为[min, max - page + 1]

例如， 假设min = 0, max = 100, page = 3，

拇指位置的有效范围是[0, 98]。