JavaScript Loops

The For Loop

Loops can execute a block of code a number of times. The for loop is the most common loop.

for (expression 1; expression 2; expression 3) {
  // code block to be executed
}

The While Loop

The while loop loops through a block of code as long as a specified condition is true.

Do...While Loop

The do...while loop is a variant of the while loop. This loop will execute the code block once, before checking if the condition is true, then it will repeat the loop as long as the condition is true.

Break and Continue

The break statement "jumps out" of a loop.
The continue statement "jumps over" one iteration in the loop.

Summary