Yeasitech Front end Developer Interview Questions and Answers

Promises are objects representing the eventual completion or failure of an asynchronous operation. They differ from callbacks by allowing better handling of asynchronous operations.

• Promises are objects that represent the eventual completion or failure of an asynchronous operation.

• Callbacks are functions passed as arguments to another function to be executed later, while promises provide a more structured way to handle ...read more

TypeScript offers static typing, better code organization, improved tooling support, and easier maintenance compared to JavaScript.

• Static typing helps catch errors during development

• Better code organization with interfaces, classes, and modules

• Improved tooling support with features like code navigation and refactoring

• Easier maintenance due to clearer code structure and type checking

• TypeScript can be transpiled to JavaS

I use browser developer tools, console.log, performance profiling, and code review for debugging and optimizing JavaScript performance.

• Utilize browser developer tools like Chrome DevTools for debugging and profiling

• Use console.log statements to log values and debug code

• Perform performance profiling to identify bottlenecks and optimize code

• Conduct code reviews to identify potential performance issues and suggest improve