Integers in javascript?

Question

How to define integers in js for e.g. to add a particular no. to 1 or 2 ,etc.

Answer 1

Javascript is a dynamically typed language. That means that you, as a developer, don't have to use specific datatypes to declare a variable. Instead, all variables are created with 'var'.
That means it's possible to add a 1 like this:
var x = 3;
x = x + 1;

If you want to make sure that x stores an integer, there are numerous helpful methods (e.g. Number.isInteger()). You could also use HTML forms to make sure that only numbers can be typed.

Answer 2

var num = 1
alert(num+1)

?

AFAIK, JavaScript numbers are always 64-bit floating point values.

Answer 3

Ty guys...