ts-useful/lib/es2020/product.js

Functions for animation, color transitions, ecliptic, bezier, decasteljau, curves, three dimensional curves, smooth scrolling, random range, randomItem, mobius index, vectors, physics vectors, and easing.

/**
 *
 * @param num
 * @param index
 * @param addend
 * @returns number
 */
export const product = (num, index, addend = 1) => {
    let prod = 1;
    for (let i = index, e = num; i <= e; i++) {
        prod *= addend * i;
    }
    return prod;
};
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