Javascript ==,!= Vs ===,!==

When validating javascript with tools like JSLint we often find only one repeated issue with == saying expected ===.

Let us clarify the difference between == and ===.
== is an equal operator which will return true when both operands are just same.
But === is strict equal operator which returns true only if the operands and their types are same

1. check “2.0”==2 here will give true
2. check “2.0”===2 here will give false

Similarly

1. check “2.0”!=2 here will give false
2. check “2.0”!==2 here will give true