What makes JavaScript different from HTML and CSS?, It creates structure, It stores images, It adds interactivity, It changes colors, What is the difference between let and const?, They are identical, Both are only for numbers, Both cannot change, let can be reassigned, const cannot, What is hoisting?, Processing declarations before code execution, Creating arrays, Deleting variables, Styling websites, What does null represent?, A text value, An intentional absence of value, A number, A function, What is strict mode?, A mode that enforces stricter JavaScript rules, A programming language, A browser, A database, What is the difference between == and ===?, Both compare only numbers, === compares only strings, == allows type conversion; === does not, No difference, What does typeof do?, Counts elements, Creates a function, Deletes a variable, Finds a data type, What is an array?, A function, A collection of values, A condition, A single number, What is an object?, A loop, A collection of key-value pairs, A browser, An operator, What is undefined?, A Boolean value, An array, A variable without an assigned value, An empty string, What is a callback function?, A variable, A function that closes a browser, A CSS property, A function passed to another function, What does map() do?, Creates a new array by transforming elements, Sorts HTML, Deletes elements, Stops a program, What does filter() do?, Deletes variables, Changes colors, Creates functions, Selects elements that meet a condition, What is a closure?, A database, A function that remembers its outer scope, A browser window, An HTML element, What is recursion?, A variable changing, An object deleting itself, A function calling itself, A loop stopping, What does DOM stand for?, Document Object Model, Digital Operation Method, Document Online Mode, Data Object Management, What is event bubbling?, Refreshing a page, An event moving from a child element to its parent, Deleting an event, Changing an image, What is an API?, A programming language, A variable, A way for software systems to communicate, A design tool, What is the purpose of async/await?, To simplify asynchronous programming, To rename variables, To create styles, To delete functions, What does the Event Loop do?, Designs websites, Creates images, Stores passwords, Manages asynchronous task execution

JavaScript Basics Quiz

by
Print
Embed

Leaderboard

Visual style

Options

AI Enhanced: This activity contains content generated by AI. Learn more.

Switch template

Continue editing: ?