Basic JavaScript

What is the correct way to declare a variable in JavaScript?

• variable = 10;

• const variable = 10;

• variable := 10;

• variable == 10;

What is the result of the following expression: 5 + "5";

• 10

• "55"

• Nan

• Error

Which function is used to display a message in the browser's console

• console.print()

• log()

• print()

• console.log()

What is the correct way to create a function in JavaScript?

• function = myFunction() {}

• function myFunction() {}

• let myFunction() {}

• function myFunction: {}

What is the output of the following code?

• 10

• 5

• undefined

• Error

What is the correct way to create an array in JavaScript?

• array = [1, 2, 3];

• array(1, 2, 3);

• array = {1, 2, 3};

• array = (1, 2, 3)

What is the result of the expression true && false

• true

• false

• undefined

• Error

What is the correct way to create an object in JavaScript?

• object = {name: "John", age: 30}

• object(name = "John", age = 30)

• object = (name: "John", age: 30)

• object = [name: "John", age: 30]

What does the === operator in JavaScript do?

• Checks for equality of values and data type

• Checks for equality of values and not data types

• Assigns a value to a variable

• Performs a bitwise OR operation

What is the correct way to access the length of an array in JavaScript?

• array.length()

• length(array)

• array.length

• array.getLength()