3 Questions for you to see how well do you know JavaScript

Here are 3 question to examine your JavaScript knowledge.

Please try to answer before you run and execute the code.

After you see the result, try to understand why.

1. ??

function getLowercase() 

{

    const UNDEFINED = ['U', 'N', 'D', 'E', 'F', 'I', 'N', 'E', 'D'];

 

    return

    {

        UNDEFINED;

    }

}


//What will be the result? why?

console.log('Lower case:', getLowercase())

2.??

const arr = [1, 0, 10, 21];


//What will be the result? why?

console.log(arr.map(parseInt));

3.???♂?

const PIE = 3.14;

const object1 = { pie: PIE };

const object2 = { pie: PIE };


//What will be the result? why?

console.log(object1 === object2);


//That would be different? why?

console.log(object1 == object2);

You're welcome to share your answers, thoughts and more cool things ??

Thanks,

Ziv Ben-Or

[email protected]

+972545882011