Object & Array in Javascript

Which object method is used?

• Object.keys()

• Object.values()

• Object.create()

• Object.assign()

Which one is the correct result?

const person = {

name: 'mostafa',

email:'[e-mail]',

phone: 23456

}

console.log( Object.keys());

• [name, email, phone]

• ['mostafa', 'email', phone]

• [mostafa, [e-mail], 23456]

which method is correct?

let person = {

name: 'katja',

email:'[e-mail]'

};

let personAdd = {

location: 'Espoo'

};

output: {name:'katja', email:'[e-mail]', location:'Espoo' }

• Object.create()

• object.keys()

• Object.assign()

which method adds items to the end of an Array?

• array.pop()

• array.push()

• array.shift()

Which array method is used?

• names.push()

• names.pop()

• names.shift()

How remove 'Mona' and 'Kirsi' from the names list?

const names = ['Mostafa', 'Mona', 'Kirsi', 'Katja'];

• names.push('Mona', 'Kirsi')

• names.slice(1, 3)

• names.unshift( 'Mona', 'Kirsi')

• names.slice(2,2)

 

How add 'Mona' and 'Kirsi' in the middle of the names list?

const names = ['Mostafa', 'Jessi', 'John', 'Katja'];

• names.slice(2, 2)

• names.unshift('Mona', 'Kirsi')

• names.splice(2, 0, 'Mona', 'Kirsi')

• names.push('Mona', 'Kirsi')

How remove 'Jessi' from the names list?

const names = ['Mostafa', 'Jessi', 'John', 'Katja'];

• names.pop()

• names.slice('Jessi')

• names.slice(1, 2)

• names.splice(1,1);

How access to the car's model ?

const car = {

name: 'Nissan',

model: ' tiida',

year: 2009

};

• console.log(model)

• console.log('tiida');

• console.log(car.model);

• console.log('model');