RockTheQuiz

What does the localStorage property in the Browser API allow you to do?

• Retrieve data from a remote server

• Store data on the client-side persistently

• Access the user's location information

• Manage browser history

Which of the following methods is used to make an asynchronous HTTP request in JavaScript and is commonly used with the Browser API?

• setTimeout()

• request()
• localStorage()

• fetch()

What is the purpose of the document.querySelector('#app')?

• To select all elements within the HTML document

• To create a new HTML element with the id 'app'
• To select the first element with the ID 'app' in the HTML document.

• To link to an external JavaScript file named 'app.js'.

• To select the first element with the class 'app' in the HTML document.

How can you attach an event listener to a button with the id "myButton" using JavaScript and the DOM?

• document.getElementById('myButton').onclick = myFunction
• document.getElementById('myButton').addEventListener('click', myFunction)
• myButton.addListener('click', myFunction)

• myButton.attachEvent("click", myFunction)

What does the Git command `git pull` do?

• Discard changes in the working directory

• Creates a new branch in the local repository
• Pushes changes from the local repository to the remote repository
• Updates the local repository with changes from the remote repository

What is the difference between let and const?

• let can be redeclared in the same scope, while const cannot

• let is block-scoped, while const is function-scoped

• let can be declared without being initialised, while const must be initialised when declared

• all of the anwers are correct

What is the difference between null and undefined?

• null is a primitive data type, while undefined is an object

• null is explicitly set by a developer, while undefined is the default value of uninitialized variables

• null is a falsy value, while undefined is not

• all of the answers are correct

Everything in JavaScript is either a…

• function

• primitive or object

• function or object

• number or object

What is the difference between synchronous and asynchronous JavaScript?

• synchronous code is executed in a single thread, while asynchronous code can be executed in multiple threads

• synchronous code blocks the execution of other code until it has completed, while asynchronous code does not

• synchronous code always executes faster than asynchronous code

• all of the answers are correct

Is this a pure function?

• Yes

• No