A sample function showing how to multiply two numbers in Javascript. Used as a reference when teaching someone how to code.

mulitply-numbers.ts

function multiplyTwoNumbers(num: number, multiplier: number) {
    let result = 0;
    for (let index = 0; index < multiplier; index++) {
        result += num;
    }
    return result;
}

function multiplyNumbers(...nums: number[]) {
    let result = 0;
    for (let i = 1; i < nums.length; i++) {
        const baseNumber = i === 1 ? nums[0] : result;
        const multiplier = nums[i];
        let loopResult = 0;
        for (let i3 = 0; i3 < multiplier; i3++) {
            loopResult += baseNumber;     
        }
        result = loopResult;
    }
    return result;
}

multiply-numbers.js

function multiplyTwoNumbers(num, multiplier) {
    let result = 0;
    for (let index = 0; index < multiplier; index++) {
        result += num;
    }
    return result;
}

function multiplyNumbers(...nums) {
    let result = 0;
    for (let i = 1; i < nums.length; i++) {
        const baseNumber = i === 1 ? nums[0] : result;
        const multiplier = nums[i];
        let loopResult = 0;
        for (let i3 = 0; i3 < multiplier; i3++) {
            loopResult += baseNumber;     
        }
        result = loopResult;
    }
    return result;
}