how is variable declared in javascript code example

Example 1: javascript declare a variable

//choose the best for your solution
var myVariable = 22; //this can be a string or number. var is globally defined

let myVariable = 22; //this can be a string or number. let is block scoped

const myVariable = 22; //this can be a string or number. const is block scoped and can't be reassigned

Example 2: varianle in javascript

var one = 1; // variable stores numeric value

var two = 'two';  // variable stores string value

var three;  // declared a variable without assigning a value