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Update Js Roadmap Strict Equality Operator === (#6220)

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# ===
# Strict Equality Operator (===)
In JavaScript, the strict equality operator `===` compares both the value and the type of two operands. This means that it will only return true if both the value and the type are identical.
```sh
"5" === "5" // true
```
In this case, both the value and the type are the same, so the result is true.
```sh
"5" === 5 // false
```
Here, although the values might appear similar, the types are different (string and number), so the result is false. The strict equality operator does not perform type coercion; both the value and the type must be identical.
Learn more from the following resources:
- [@article@Strict equality - MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Strict_equality)