JavaScript Loops: Repeating Code

What you will learn

Master the art of repetition! Learn for loops, while loops, and how to iterate through arrays. Loops are essential for processing data and avoiding repetitive code.

9 Loop Challenges
For & While Loops
Array Iteration
Avoid Repetition
Data Processing
Control Flow

Course Progress

  1. 1

    Basic For Loop

    Instead of writing the same code many times, use a for loop to repeat it!

  2. 2

    Looping Through Arrays

    One of the most common uses of loops is going through every item in an array!

  3. 3

    Loops for Calculations

    Loops are perfect for calculations like adding up numbers or counting things!

  4. 4

    While Loops: Keep Going Until...

    While loops repeat as long as a condition stays true. Great when you don't know exactly how many times to loop!

  5. 5

    For vs While: Same Result, Different Style

    You can often accomplish the same thing with either for or while loops. See the difference!

  6. 6

    Breaking Out Early with Break

    Sometimes you want to stop a loop before it naturally ends. Use break!

  7. 7

    Skipping Items with Continue

    Continue lets you skip the rest of the current loop iteration and jump to the next one!

  8. 8

    Loops Inside Loops (Nested)

    You can put loops inside other loops! This creates patterns and processes 2D data.

  9. 9

    Modern For-Of Loop

    Modern JavaScript has a cleaner way to loop through arrays called for-of!

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