Two operands are “equal” using a more relaxed definition of sameness Operator is known as the equality operator it checks whether its It checks whether its two operands are “identical” using a strict Strict equality operator (or sometimes the identity operator), and Operators accept operands of any type, and both return true if their operands are the same and The same, using two different definitions of sameness. Number to String: convert the string to a number.The = and = operators check whether two values are.Then compare the two operands loosely again. If one of the operands is a Boolean but the other is not, convert the boolean to a number: true is converted to 1, and false is converted to 0.If one of the operands is a Symbol but the other is not, return false.If they are of the same type, compare them using step 1.The rest of the conversion is done case-by-case. At this step, both operands are converted to primitives (one of String, Number, Boolean, Symbol, and BigInt).If one of the operands is an object and the other is a primitive, convert the object to a primitive.If one of the operands is null or undefined, the other must also be null or undefined to return true.Symbol: return true only if both operands reference the same symbol.BigInt: return true only if both operands have the same value.Boolean: return true only if operands are both true or both false.If either operand is NaN, return false so, NaN is never equal to NaN. Number: return true only if both operands have the same value.String: return true only if both operands have the same characters in the same order.Object: return true only if both operands reference the same object.If the operands have the same type, they are compared as follows:.This can be roughly summarized as follows: The equality operators ( = and !=) provide the IsLooselyEqual semantic. Warning: unreachable code after return statement.Warning: -file- is being assigned a //# sourceMappingURL, but already has one.TypeError: X.prototype.y called on incompatible type.TypeError: setting getter-only property "x".TypeError: Reduce of empty array with no initial value.TypeError: property "x" is non-configurable and can't be deleted.TypeError: invalid assignment to const "x".TypeError: invalid 'instanceof' operand 'x'.TypeError: cannot use 'in' operator to search for 'x' in 'y'.TypeError: can't redefine non-configurable property "x". TypeError: can't delete non-configurable array element. TypeError: can't define property "x": "obj" is not extensible.TypeError: can't convert BigInt to number.TypeError: can't assign to property "x" on "y": not an object.TypeError: "x" is not a non-null object.Synta圎rror: Using to indicate sourceURL pragmas is deprecated.Synta圎rror: unterminated string literal.Synta圎rror: unparenthesized unary expression can't appear on the left-hand side of '**'.Synta圎rror: unlabeled break must be inside loop or switch.
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