Why is (3) .constructor valid when the "constructor" in (3) is invalid?

Question

(3).constructor- Number, but "constructor" in (3)- TypeError, why?

Answer 1

Using the accessor property , the number 3turns into a Number object. And an object of this type has a constructor and therefore a property constructor.

But as ChaosPandion already pointed out , the operator inrequires the correct expression to get the object, but 3it is not an object, but a simple literal.

Answer 2

in. , . 5 .

11.8.7

RelationalExpression: RelationalExpression ShiftExpression :

• lref RelationalExpression.
• lval - GetValue (lref).
• rref ShiftExpression.
• rval - GetValue (rref).
• (rval) , TypeError.
• [[HasProperty]] rval ToString (lval).

(3).constructor , , , .