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Apr 29, 2024 · Prepare for your JavaScript interview with this comprehensive list of questions and answers. Learn about data types, functions, loops, timers, variables, and more.
- What is JavaScript? A high-level, interpreted programming language called JavaScript makes it possible to create interactive web pages and online apps with dynamic functionality.
- What are the different data types in JavaScript? JavaScript has six primitive data types: Number. String. Boolean. Null. Undefined. Symbol. It also has two compound data types
- What is hoisting in JavaScript? Hoisting is a JavaScript concept that refers to the process of moving declarations to the top of their scope. This means that variables and functions can be used before they are declared, as long as they are declared before they are used in a function.
- What is the difference between null and undefined? null is an assignment value that represents no value or an empty value, while undefined is a variable that has been declared but not assigned a value.
May 23, 2024 · For example, form input validation. Rich User Interface. JavaScript helps in making the UI of web applications look and feel much better. Frameworks. JavaScript has countless frameworks and libraries that are extensively used for developing web applications and games of all kinds. 6.
- What are the differences between Java and JavaScript? JavaScript is a client-side scripting language and Java is object Oriented Programming language.
- What are JavaScript Data Types? There are three major Data types in JavaScript. Primitive. Numbers. Strings. Boolean. Symbol. Trivial. Undefined. Null. Composite. Objects.
- Which symbol is used for comments in JavaScript? Comments prevent the execution of statements. Comments are ignored while the compiler executes the code.
- What would be the result of 3+2+”7″? Here, 3 and 2 behave like an integer, and “7” behaves like a string. So 3 plus 2 will be 5. Then the output will be 5+”7″ = 57.
Jun 7, 2024 · Get the list of angular interview questions with answers, if you are looking for a job javascript with angular. With this, we have come to the end of the JavaScript interview questions and answers blog. You can also check Java Collection Interview Questions for more. I Hope these questions will help you in your interviews.
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1 day ago · Prepare for your next JavaScript interview with this collection of 100 questions and answers. Learn about basic, intermediate and advanced topics, such as data types, promises, generators, classes, and more.
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Prepare for your next web developer interview with these advanced and tricky JavaScript coding challenges. See examples of callback functions, reverse words, check array types, empty arrays, and more.
