JavaScript Mastery from Zero to Hero - Prepare for Coding Interviews - Solution - Login Iteration Calculator

The video tutorial guides viewers through writing a JavaScript function to calculate the total number of true logins from a given object. It covers initializing variables, implementing a for loop to iterate through object keys, and using conditional logic to perform the calculation. The tutorial concludes with testing the function to ensure it returns the correct result.

What is the primary goal of the function discussed in the video?

• To sort the logins in alphabetical order

• To calculate the total number of logins from a given object

• To delete false logins from the object

• To convert login data into a string format

What is the purpose of the variable 'NUM' in the function?

• To keep track of the current week

• To store the total number of logins

• To store the login object

• To hold the login data set

Which loop is used to iterate through the object keys in the function?

• do-while loop

• for loop

• for-each loop

• while loop

What condition is checked to increase the count of logins?

• If the object is empty

• If the value is a number

• If the key is a string

• If the key value is exactly equal to true

What is the final output of the function when tested with the given data?

• 5

• 2

• 3

• 4