JavaScript Mastery from Zero to Hero - Prepare for Coding Interviews - What Is Object.keys in JavaScript - Storing Keys

The video tutorial explains the use of Object.keys in JavaScript, which allows you to extract keys from an object and store them in an array. This can be useful for organizing and manipulating data. The tutorial provides a step-by-step example of how to use Object.keys to convert object keys into an array and concludes with an exercise for practice.

What is the primary function of Object.keys in JavaScript?

• To store keys of an object into an array

• To store both keys and values of an object into an array

• To store values of an object into an array

• To store the length of an object into an array

In the example provided, which language was set to false in the object?

• French

• Spanish

• English

• German

What does Object.keys return when used on an object?

• An array of the object's methods

• An array of the object's values

• An array of the object's keys

• An array of the object's key-value pairs

Why might it be useful to convert object keys into an array?

• To easily modify the values

• To organize and access the keys in a different format

• To delete the keys from the object

• To change the data type of the keys

What is the suggested exercise to practice Object.keys?

• Write some objects and store their properties in arrays

• Write some objects and store their methods in arrays

• Write some objects and store their keys in arrays

• Write some objects and store their values in arrays