HTML CSS and JavaScript for Beginners - A Web Design Course - How to Select Dynamic Elements from the Page Using QuerySe

The video tutorial covers creating and managing lists in HTML using JavaScript. It explains how to apply conditions to limit the number of items in a list, use query selectors to manipulate DOM elements, and dynamically update lists with event listeners. The tutorial also demonstrates appending items to lists and handling callbacks, as well as methods to limit the number of list items using conditions and JavaScript properties.

What is the purpose of using the child element count property in JavaScript?

• To add new elements to a list

• To remove elements from a list

• To sort elements in a list

• To count the number of child elements in a list

How does querySelectorAll differ from querySelector?

• querySelectorAll returns a live node list

• querySelector returns all matching elements

• querySelector can only select input fields

• querySelectorAll returns a static node list

What does the querySelector method return?

• A static node list

• A live node list

• The first matching element

• A list of all matching elements

What is the main function of the button in the HTML setup?

• To add items to the unordered list

• To change the list's background color

• To delete items from the list

• To sort the list items

How can you track the number of times a button is clicked?

• By using a form submission

• By using a timer

• By using a global variable and incrementing it

• By using a CSS counter

Which method is used to add a new list item to the unordered list?

• replaceChild

• removeChild

• appendChild

• createElement

What is the difference between append and appendChild?

• appendChild returns a callback, append does not

• append returns a callback, appendChild does not

• Neither have callbacks

• Both have callbacks

How can you ensure that a list item is only added if the input has a certain number of characters?

• By using a CSS class

• By using a timer

• By using a loop

• By using a condition to check input length

What is a potential issue when using child element count to limit list items?

• It only works with ordered lists

• It may count non-list elements

• It requires a specific CSS class

• It counts only visible elements

Why is it important to get the live value of an input field when adding list items?

• To change the input field's type

• To reset the input field

• To ensure the input field is visible

• To get the most recent user input