What does === mean in JavaScript?

Some will say that === means equal and of the same type, but that's not really true. It actually means that both operands reference the same object, or in case of value types, have the same value. So, let's take the following code: The same here: Or even: This behavior is not always obvious.

What does operator == mean in JavaScript?

Operator == Returns true, when both operands are equal. The operands are converted to the same type before being compared. Equality and type comparison: Operator === Returns true if both operands are equal and of the same type. It's generally better and safer if you compare this way, because there's no behind-the-scenes type conversions.

What is the difference between JavaScript === vs ==?

JavaScript === vs == . It means equality without type coercion type coercion means JavaScript do not automatically convert any other data types to string data types javaScript convert 2 to string by using == operator integer to string In a typical script there will be no performance difference.