What is the difference between a high-level and low-level programming language?
Interview Response: A high-level language gets compiled without detailed knowledge of the underlying computer. For example, managing memory, knowing what processor is running, and keeping track of things like pointers are not necessary. High-level languages are more accessible to write and manage than low or mid-level programming languages because they are platform-independent. The major distinction between high-level and low-level languages is that programmers can readily grasp, interpret, and compile high-level languages when compared to machines. Machines, on the other hand, can interpret low-level language more readily than humans.
Interview Response: ECMAScript with a reference guide named ECMA-262.
What are the code names for Chrome, Opera, FireFox, IE, Edge, and Safari?
- V8 - in Chrome and Opera
- Spider Monkey - in FireFox
- Chakra - in Internet Explorer
- Chakra Core - in Microsoft Edge
- Nitro / SquirrelFish - in Safari
Interview Response: It is good to remember the names of engines to ensure features work in all environments. If not, we must write a polyfill.
Technical Response: The code names are good to remember because they get used in developer articles on the internet. For instance, if "V8 supports a feature X, " it probably works in Chrome and Opera.
- Modify the existing text, add HTML, and design the page.
- Respond to user activities, such as mouse clicks, pointer movements, and keystrokes.
- Send network requests to distant servers and download and upload files (so-called AJAX and COMET technologies).
- Get and set cookies, ask the visitor questions, and display messages
- Track client-side data ("local storage").
Examples of such constraints include:
- Modern browsers allow it to interact with files. Still, access is limited and only provided if the user performs specific actions, such as "dropping" a file into a browser window or choosing it through a tag.
Examples of such languages:
- TypeScript concentrates on adding "strict data typing" to simplify the development and support of complex systems, and Microsoft develops it.
- Flow also adds data typing, but differently, and Facebook developed it.
- Kotlin is a modern, concise and safe programming language that can target the browser or Node.