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Add Item to Data Structure

Add Item to Data Structure

Assessment

Interactive Video

•

Information Technology (IT), Architecture

•

University

•

Practice Problem

•

Hard

Created by

Wayground Content

FREE Resource

The video tutorial explains how to manage items using controllers in a JavaScript application. It covers setting up event listeners, accessing UI selectors, and handling user input to add new items. The tutorial also demonstrates generating unique IDs for items and updating the data structure accordingly.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary purpose of the item and UI controllers discussed in the video?

To handle user authentication

To manage database connections

To perform data encryption

To fetch items and update the user interface

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the function 'load event listeners' used for?

To initialize the application

To load external scripts

To fetch data from the server

To organize and manage event listeners

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it necessary to create a public method to access UI selectors?

Because UI selectors are private variables

To improve application performance

To reduce code redundancy

To enhance security

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the 'get item input' method return?

An object with name and calories

A string with item details

A list of all items

A boolean indicating success

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the application ensure that both name and calories are entered before proceeding?

By disabling the submit button

By displaying an alert message

By checking if both fields are not empty

By using a try-catch block

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of generating an ID for each item?

To display items in a list

To sort items alphabetically

To uniquely identify each item

To calculate the total calories

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How are calories converted from a string to a number?

Using a regular expression

Using a mathematical operation

Using the parseInt function

Using the toString method

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