Explanation of the usage of the while loop in JavaScript _ basic knowledge

This article mainly introduces how to use the while loop of JavaScript. It is the basic knowledge in JS learning. If you need it, you can refer to the following situations when writing a program, when you need to perform some operations over and over again. In this case, you need to write loop statements to reduce the number of codes.

JavaScript supports all the necessary loops to help you in all programming steps.
While Loop

The most basic loop in JavaScript is the while loop, which will be discussed in this tutorial.
Syntax

while (expression){  Statement(s) to be executed if expression is true}

The while LOOP aims to execute statements or code blocks repeatedly (as long as the expression is true ). Once the expression is false, the loop is exited.
Example:

The following example illustrates a basic while loop: