Javascript - Variables

Javascript variables uses to contain information. 

Syntax: 
var <name> = <value>

Ex: 
var No1 = 5;
var No2 = 10;
var total = No1 + No2;

Javascript Variable names;
1. must begins with a letter
2. can begins with $ or _
3. are case sensitive

How to define a Javascript Variable

1. Method 01
    var carName = "Toyota"

2. Method 02
    var carName;
    carName = "Toyota";