1) JS Statements
var a = 2 + 3; // this is a statement
Any line which is written in code but which is not executed in a code is called a Comment. It is mostly used to ease a second persom viewing the code to what each line does. Like we have done above.
3) JS Vairable
If we want to store any values in a code we have to allocate some space for each value to store. We use variables to store values
var b = 2; var c = 3; var a = b + c; // Output: 5