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Loops and Iteration

Explore the core concepts of loops and iteration in JavaScript. Learn to use different types of loops like for, while, do-while, for-of, and for-in to execute code repetitively and manipulate arrays and objects. This lesson helps you understand when to use each loop type for clear and efficient programming.

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In JavaScript, loops allow us to execute a block of code multiple times. This is essential when working with repetitive tasks, such as iterating over elements in an array or performing calculations repeatedly. JavaScript offers several types of loops, each suited for different use cases.

The for loop

The for loop is used when the number of iterations is known beforehand. It consists of three parts: initialization, condition, and increment/decrement.

JavaSrcipt
for (let i = 0; i < 5; i++) {
  console.log(i); // Prints 0, 1, 2, 3, 4
}

  • Initialization (let i = 0): Declares and initializes a counter variable.

  • Condition (i < 5 ...