how to use create to variables in javascript code example

Example 1: Create variable javascript

//Assigns the value bar to the variable foo
var foo = bar;

Example 2: how to create variables using javascript

var myVar;       //unitialized variable( can be intiallized later )
var number = 1; //number
var string = " hello world " ; //string
var boolean = true ;  //boolean
myVar = function(){  //variable can hold function
  
};