Clamps num within the inclusive range specified by the boundary values a and b.
If num falls within the range, return num.
Otherwise, return the nearest number in the range.
代码片段
const clampNumber = (num, a, b) => Math.max(Math.min(num, Math.max(a, b)), Math.min(a, b));使用样例
clampNumber(2, 3, 5); // 3
clampNumber(1, -1, -5); // -1