Promises, async/await are tools in JavaScript for handling asynchronous code more elegantly.

what are three important states in JavaScript promise?

explain destructuring for Array, Object or String in JavaScript, and what are uses?

Explain the Pure function in the javascript

what is currying in the javascript Currying is a technique used to transform a function with multiple arguments into a sequence of nested functions, each taking a single argument. The curried function returns a new function for each argument until all arguments are provided, and then it finally returns the result. This technique allows for partial application of a function, meaning you can pass some arguments now and the rest later.

explain sorting principles with examples

write code to unique object array from var obj = [ { name: 'xyz', id: '1' }, { name: 'abc', id: '2' }, { name: 'xyz', id: '1' }, { name: 'pqr', id: '3' }, ];