What is difference between == and ===?

Question

Accepted Answer

The difference between == and === is that == compares the values of two variables, while === compares both the values and the data types.

The == operator performs type coercion, meaning it converts the operands to a common type before comparison.
The === operator does not perform type coercion and requires both the values and the data types to be the same for a true comparison.
For example, 1 == '1' returns true because the operands are coerced to the same type (number), but 1 === '1' returns false because the operands have different types (number and string).

Accepted Answer

The == operand loosely compares two values, thus it can be used in cases where the data type of the operand isn't important. For e.g., imagine a form entry where you've asked students their roll no. It is possible that some will enter it in string form and some in number form. In such cases, we can use the == operator to verify the data without the database.

The === operand strictly compares two values, thus it is used in the places where the data type of the operand is important. Imagine an online coding contest, where an answer is a number in string format. In that case, we'll use the === operator to compare and validate answers.

What is difference between == and ===?

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