Values, Types, and Operators

Did You know the computer can't understand our language except for machine language?

The binary code is well understood by our computers.

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VALUES:

Values comprised of bits, they play different roles. Values can be numbers, pieces of text or function, and so on.
NUMBERS:

Here we will discuss values of the number type i.e. numeric (12,13..) values.

OPERATORS:

UNARY OPERATOR

Typeof operator

console.log(typedef 34.15);
// *number
console.log(typedef "x");
// * string

note: minus operator can be used as a binary as well as >unary operator.

console.log(-(5-2));
// -> -7

BOOLEAN OPERATOR

Comparision
It tells us whether the value is true or false.

console.log(10>2);
//->true
console.log(5<9);
//->false

We can also compare length of two strings.

console.log("ANA"<"SOOYA");
//->true

Other operators are ==,>=,<=,!=

console.log("alpha"!="aphanhso");
//->true

Note-There is only one value that is not equal to itself >and that is NaN (not a number)

console.log(NaN==NaN);
//->false

LOGICAL OPERATOR

and is written as &&

console.log(true && false);
//->false

or is written as ||

console.log(false||true);
//-->true

Ternary operator ? or conditional operator

console.log(false?3:5);
//-->3

Short-circuiting of logical operators

|| operator for example will return value to its left when >that can be converted to true and vice versa

console.log(null||"user");
//->user

Automatic Type Conversion

At times javascript can accept any program you give it.Even if an operator applied to the "wrong" type of value,Javascript will convert it to that value it needs.This is known as type coercion.

console.log(4*null)
//->0

In the above example, null becomes 0 so we got 0 as output.

console.log("2" - 1)
//->1
console.log("2"+1)
//->3
console.log("2"*1)
//->2
console.log("two"*1)
//->NaN
console.log(false==0)
//->true

If null or undefined occurs on either side of the operator >,it produces true. Let's take an example.

console.log(null ==undefined);
//->true

Ref: Eloquent Javascript

I would advice readers to code on their own and explore more.
If You have any doubts, you can write it in the comments section.

😃 Have an amazing day ahead.
Hope you liked this blog!