While loop in JavaScript

A while loop in JavaScript is another type of loop statement that allows you to execute a block of code repeatedly as long as a specified condition is true. Here's the basic syntax of a while loop:

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while (condition) {
  // code to be executed
}

• The condition is evaluated before each iteration of the loop. If the condition is true, the loop continues. If the condition is false, the loop terminates.
• The code to be executed is the block of code that is executed as long as the condition is true.

Here’s an example of a while loop that counts from 0 to 4:

let i = 0;
while (i < 5) {
  console.log(i);
  i++;
}

In this example, the variable i is initialized outside of the loop, the condition checks if i is less than 5, and the code inside the loop prints the value of i to the console and increments i by 1 after each iteration. The loop will execute 5 times, with i taking on the values of 0, 1, 2, 3, and 4, and each value of i will be printed to the console.

You can also use a while loop to iterate over an array:

const numbers = [1, 2, 3, 4, 5];
let i = 0;
while (i < numbers.length) {
  console.log(numbers[i]);
  i++;
}