Is array an array?
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
At line one we create an array and bind it with the array constant. Then the type of the value of this constant is evaluated by the typeof operator.
Thereβs no such type as array in JS, so itβs impossible to see the message ARRAY! on the screen. In fact, all JS arrays are objects, so the execution goes into the else branch, and SOMETHING WEIRD is printed on the screen.
ANSWER: SOMETHING WEIRD will be logged to the screen as all JS arrays have the type object.
Top comments (3)
Array.isArray(array)orarray instanceof Arraywould both work πThanks for pointing it out! The main point of these code snippets is to show beginner devs their weaknesses. In my experience, at least half of the newbie devs don't know how exactly
typeofworks.Object.prototype.toString.call([]).slice(8,-1);
will also work