let foo = () => arguments.length;
console.log(foo(1,2,3));
console.log(foo(1,2,3));
Anonymous Quiz
42%
3
11%
0
31%
Undefined
16%
Error
console.log(!!null, !!"", !!1);
Anonymous Quiz
50%
false false true
23%
true false true
13%
false true false
13%
true true true
let x = [1,2,3];
delete x[1];
console.log(x.length);
delete x[1];
console.log(x.length);
Anonymous Quiz
56%
2
20%
3
14%
Undefined
11%
Error
❤2