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JavaScript Fundamentals

Authored by Education AIT

Computers

1st - 3rd Grade

Used 41+ times

JavaScript Fundamentals
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19 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the typeof NaN? NaN = Not a number

A string

A boolean

A number

Undefined

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

¿Qué nos da la siguiente ecuación? ! + [] + !![]

undefined

false

true

2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

¿Cómo se invoca la función "myFunction"?

call function myFunction()

function myFunction()

myFunction()

call myFunction()

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

En JavaScript, el operador para concatenar strings es...

%

+

.

-

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

¿Con qué código enviamos información a la consola?

console.append()

console.log()

echo " ";

console.print()

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

En JavaScript, ¿cómo se genera un número aleatorio?

Math.rnd()

Math.round()

Math.random()

Ninguna de las respuestas es correcta

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

¿Cuál es la instrucción usada para devolver un valor en una función de JavaScript?

Send

Return

Value

Back

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