The While loop

In JavaScript, a while loop is a control flow statement that allows a block of code to be repeatedly executed as long as a specified condition is true.

The syntax for a while loop in JavaScript is as follows:

javascriptCopy codewhile (condition) {
    // Code block to be executed
}

NOTE: If the condition never becomes false, the loop will never end and this might crash the runtime.

do-while loop

In JavaScript, the do-while loop is another type of loop that allows a block of code to be executed repeatedly as long as a specified condition is true. The main difference between a do-while loop and a while loop is that the do-while loop guarantees that the code block is executed at least once, even if the condition is initially false.

The syntax for a do-while loop in JavaScript is as follows:

javascriptCopy codedo {
    // Code block to be executed
} while (condition);