What is the purpose of a while loop?

A while loop is used in programming to repeatedly execute a block of code as long as a specified condition evaluates to true. It allows for the creation of loops that can run an indefinite number of times, depending on the condition. This is useful for scenarios where the number of iterations is not known beforehand.

Syntax Example in JavaScript:

let count = 0;

while (count < 5) {
    console.log(count);
    count++;
}

In this example, the loop will print the numbers 0 through 4 to the console. The loop continues until the condition count < 5 is no longer true.