What is the difference between = and ===?

#1

what is difference between mood===‘sleepy’ and mood=‘sleepy’?

#2

mood===‘sleepy’ => comparison

mood=‘sleepy’ => assignment

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#3

mood = 'sleepy' is assigning the value ‘sleepy’ to the variable mood.
mood === 'sleepy' is testing whether the variable mood has been assigned the value ‘sleepy’.

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#4

is there operator ‘==’ in JS? and if so what’s the difference to the ‘===’?

#5

== looks at the value irrelevant of its type.
=== also checks if the type is the same.

Example:

2 == '2' // true, number and string have the same value so they are equal.
2 === '2' // false, number and string are not of the same type.
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