Introduction to JS comparison and logical operators _ basics

Comparison and logical operators are used to test true or false.

Comparison operators
Comparison operators are used in logical statements to determine whether a variable or value is equal.

Given the x=5, the following table explains the comparison operator:

operator	Description	Example
==	Equals	X==8 to False
===	Congruent (value and type)	X===5 is true;x=== "5" to False
!=	Not equal to	X!=8 is True
>	Greater than	X>8 to False
<	Less than	X<8 is True
>=	Greater than or equal to	X>=8 to False
<=	Less than or equal to	X<=8 is True

How to use
You can compare values by using comparison operators in conditional statements, and then act on the results:

if (age<18) document.write ("Too Young");
You will learn more about conditional statements in the next section of this tutorial.

logical operators
Logical operators are used to determine the logic between variables or values.

Given X=6 and y=3, the following table explains the logical operators:

operator	Description	Example
&&	and	(x < && y > 1) is True
||	Or	(x==5 | | y==5) to FALSE
!	Not	! (x==y) is true

Conditional operator
JavaScript also contains conditional operators that assign values to variables based on certain criteria.

Grammar
Variablename= (condition)? value1:value2
Example
Greeting= (visitor== "PRES")? " Dear President ":" Dear ";
If the value in the variable visitor is "PRES", assign "Dear President" to the variable greeting, otherwise the value "Dear" is assigned.