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3. JS Loops

Module 1 · Media Course's Objectives
Module 2 · Media Happy birthday Problem
Module 3 · Media Repeating tasks with loops
Module 4 · Flowchart Loop flowchart
Module 5 · Media While Syntax
Module 6 · Media Print number's multiples up to 10
Module 7 · Media Odd Even
Module 8 · Media Fizzbuzz
Module 9 · Media Ship container Problem
Module 10 · Media Break Keyword
Module 11 · Media Continue Keyword
Module 12 · Media For Loop Syntax
Module 13 · Media Ship container with for loop
Module 14 · Media Pay your employees
Module 15 · Text Clothing-Sales Problem
Module 16 · Flowchart Nested loops flowchart You are here
Module 17 · Text Nested loops matrix multiplication table
Module 18 · Text Prime numbers exercise

Module 16 of 18 · Flowchart

Nested loops flowchart

Kostas Diakogiannis

Nested Loops

Nested loops is also a possible feature. That means you can create a loop inside a loop. This is very useful when we want to make a repetitive task, and for each item of it we want to assign another repetitive task one more.

For example what if we want to find all customers of our web app that are coming from Iran and they were born after 1988 (are under 30 years old), those are two different properties. First we need to find those that are coming from Iran, so we need to loop through ALL customers, and every time we find someone coming from Iran, we also loop through all the other properties to find it's birthdate and if it's before 1988. There are also other ways to solve this problem (such as object properties) but until then we will stick to this.

Let's see a practical example.

Nested loops flowchart

3. JS Loops

Instructions

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