Checks if two numbers are approximately equal to each other.

Use Math.abs() to compare the absolute difference of the two values to epsilon.
Omit the third parameter, epsilon, to use a default value of 0.001.

代码片段

const approximatelyEqual = (v1, v2, epsilon = 0.001) => Math.abs(v1 - v2) < epsilon;

使用样例

approximatelyEqual(Math.PI / 2.0, 1.5708); // true