JavaScript While Loop

JavaScript While Loop is used to execute a block of code for a number of times based on a condition.

In this tutorial, we will learn how to define/write a JavaScript While loop, and its usage using example programs.

The syntax of JavaScript While Loop is

while (condition) {
     //statements
 }

where condition is the expression which is checked before executing the statements inside while loop.

In the following example, we execute a block of code that appends ‘hello world’ to a pre block HTML element ten times using a While Loop.

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We can also use a while to iterate over the elements of an array, using array length in condition, as shown in the following example.

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In this JavaScript Tutorial, we learned about While Loop, its syntax, and usage with examples.

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