WebWonders

Quiz 15: typeof null
Question: What does this code output?



console.log(typeof null);

20 hours ago | [YT] | 0

WebWonders

Quiz 15: typeof null
Question: What does this code output?



console.log(typeof null);

20 hours ago | [YT] | 0

WebWonders

Quiz 14: Global Object Property
Question: In browsers, what becomes a window property?

var globalVar = 'hello';
let globalLet = 'world';

1 day ago | [YT] | 0

WebWonders

Quiz 13: Multiple Declarations
Question: Which statement causes an error?


var x = 1;
var x = 2;
let y = 3;
let y = 4;

2 days ago | [YT] | 0

WebWonders

Quiz 12: const in Loop
Question: Which loop works with const?

// Which works?

3 days ago | [YT] | 0

WebWonders

Quiz 11: var in Loop
Question: What's the final value of i?

for (var i = 0; i < 5; i++) {
// loop runs
}
console.log(i);

4 days ago | [YT] | 0

WebWonders

Quiz 9: Variable Hoisting
Question: What is the output?


console.log(age);
var age = 25;
let year = 2024;

5 days ago | [YT] | 0

WebWonders

Quiz 8: const with Objects

Question: What happens when we run this code?

const user = { name: "Alice" };
user = { name: "Bob" };
console.log(user.name);

1 week ago | [YT] | 0

WebWonders

Quiz 7: Hoisting Differences


Question: What is logged?



console.log(typeof a);
console.log(typeof b);
var a = 1;
let b = 2;

1 week ago | [YT] | 0

WebWonders

Quiz 6: Global Scope Pollution


Question: What's the difference between these declarations in global scope?
var a = 1;
let b = 2;

1 week ago | [YT] | 0