Comparison operators: what does '===' and '!==' mean? Explain plz

Answer 1

=== and !== check types of compared variables and their values.
For example let's check comparision of number and string:
9 !== "9"
But
9 == "9"
Types are different here.

Answer 2

== is used to check values are equal or not
example
8==8 returns true & 8==7 will return false

!= this means not equal to, just opposite of ==
example
8!=8 will return false here but 8!=7 returns true

Answer 3

I don't understand why in JS if you compare a string and a float with the simple equal operator (==) you get true if one is String and the other not. Therefore, we have to use identical operator to get the real comparison string===float, false honey.