Javascript while Statement

Introduction

The while statement is a pretest loop.

The escape condition is evaluated before the code inside the loop has been executed.

It is possible that the body of the loop is never executed.

Here's the syntax: 

while(expression) 
   statement

And here's an example of its usage: 

let i = 0; 
while (i < 10) { 
   i += 2; 
}

In this example, the variable i starts out equal to 0 and is incremented by two each time through the loop.

As long as the variable is less than 10, the loop will continue.




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