Javascript 4.5 Objects

Question 1

Define “Objects”

Answer 1

An object is a collection of data and/or functionality. These usually consist of several variables and functions. ( Which are called properties and methods)

Question 2

How do you access Object literals

Answer 2

dot notation and using square brackets

Question 3

How do you set a value to an object

Answer 3

varName.name = ‘new value’;

Question 4

In a ( for…. in ) loop how do we access a properties value

Answer 4

Using bracket notation preceded by the name of the object. The name within the bracket will be the var name declared within the for….in loop

Question 5

What method returns an Array containing the property names or keys?

Answer 5

Object.keys( ); method

Question 6

What method returns an Array containing the property values?

Answer 6

Object.values( ); method

Question 7

How can we combine two objects with a special operator?

Answer 7

The spread operator ( … )