The Full Stack Web Development - Functions & Events - Project on Functions

This video tutorial covers essential JavaScript concepts, focusing on functions and events. It begins with an introduction to functions, explaining how to create and call them, and how to use parameters and default values. The tutorial then shifts to events, demonstrating how to handle events like onclick and onsubmit, and how to use event listeners for better code organization. The video also explores various event types, including onblur and onfocus, providing a comprehensive overview of JavaScript's event handling capabilities.

What is the purpose of a function in JavaScript?

• To style HTML elements

• To execute a block of code when called

• To create a database

• To store data permanently

What happens if you call a function with fewer arguments than it expects?

• It uses undefined for missing arguments

• It throws an error

• It skips the function call

• It uses zero for missing arguments

How can you return a value from a function?

• By using the 'return' keyword

• By using the 'display' keyword

• By using the 'output' keyword

• By using the 'print' keyword

What is a bad practice when handling events in JavaScript?

• Using event listeners

• Using functions to handle events

• Using external JavaScript files

• Using inline JavaScript

Which method is used to get the current date and time in JavaScript?

• getCurrentDate()

• new Date()

• Date.now()

• currentDate()

What does the 'getDate()' method return?

• The current day of the month

• The current year

• The current day of the week

• The current month

Which event is triggered when a user clicks on an element?

• onload

• onclick

• onmouseover

• onchange

What is the purpose of 'preventDefault()' in event handling?

• To alert the user

• To stop the event from being triggered

• To prevent the default action of the event

• To log the event details

Which event occurs when an input field loses focus?

• onselect

• onchange

• onblur

• onfocus

What is the advantage of using event listeners over inline event handling?

• It allows for more complex HTML

• It makes the code more readable and maintainable

• It increases the page load time

• It reduces the number of functions needed