Numbers in JavaScript

In JavaScript Every Number is Floating Point Number(Like Decimal Number). Actually in double-precision 64 bit binary format 😳️ Ahh Too much . But yes Like double in c or c++

so 23 === 23.0 it returns True which is not the case in other programming Languages

so the following are the same

Number.parseFloat('23.59px') // returns 23.59

23 === 23.0 //True

43===43.000

Here Note I have used"===" instead of "==". Ah that's another JavaScript thing. We will discuss it in another post

Some functions we care about

1. Converting a String into Number using Number function

   Number('23')  // returns 23
   Number('yes')  // returns 'NAN'(Not a Number)
   

2. Here is another very useful function Number.parseInt(argument,radix) It returns an Integer(don't confuse here It is actually a floating Point Number under the hood) of the specified radix or base

     Number.parseInt('23px') -> returns 23
   

   Now look How useful it is and you know how to use it with css units 😊️

3. Similarly Number.parseFloat(argument) -> returns a Floating point Number

    Number.parseFloat('23.59px') // returns 23.59
   

   If the Number can not be parsed from the argument it returns "NAN"

4. The Number.isFinite() method determines if the the passed value is a finite Number that is the number is neither Infinity nor NAN

console.log(Number.isFinite(1/0));
//expected false

console.log(Number.isFinite(5/10));
//ecxpected true

So this is what I have learnt by going through a tutorial of JavaScript Number