JavaScript OPERATORS: == != === !== > >=

OPERATORS: == != === !== > >= < <=

A comparison operator compares two operands and returns a Boolean value (true or false) as to the validity of the comparison. Operands can be of numeric or string type.

This is the equal operator and returns a boolean true if both the operands are equal. JavaScript will attempt to convert different data types to the same type in order to make the comparison. Assuming 'a' to be 2 and 'b' to be 4, the following examples will return a value of true:

a == 2
a == "2"
2 == '2'

This is the not equal operator which returns a Boolean true if both the operands are not equal. Javascript attempts to convert different data types to the same type before making the comparison. The following examples return a Boolean true:

a != b
a != 4
a != "2"

===

This is the strict equal operator and only returns a Boolean true if both the operands are equal and of the same type. These next examples return true:

a === 2
b === 4

!==

This is the strict not equal operator and only returns a value of true if both the operands are not equal and/or not of the same type. The following examples return a Boolean true:

a !== b
a !== "2"
4 !== '4'

This is the greater than operator and returns a value of true if the left operand is greater than the right.:

a > 1
b > a

This is the greater than or equal operator, which returns true if the first operand is greater than or equal to the second. The following examples return true:

a >= 1
a >= 2
b >= a

This is the less than operator and returns true if the left operand is less than the right:

a < 3
a < b

This is the less than or equal operator and returns true if the first operand is less than or equal to the second. These next examples all return true:

a <= 2
a <= 3
a <= b