How to perform an integer division, and separately get the remainder, in JavaScript

In JavaScript, how do I get:

1. The whole number of times a given integer goes into another?
2. The remainder?

For some number y and some divisor x compute the quotient (quotient)^[1] and remainder (remainder) as:

const quotient = Math.floor(y/x);
const remainder = y % x;

Example:

const quotient = Math.floor(13/3); // => 4 => the times 3 fits into 13  
const remainder = 13 % 3;          // => 1

[1] The integer number resulting from the division of one number by another