Yield Keyword JavaScript - With Real life use-cases.md

The yield keyword in JavaScript is primarily associated with generators, which are a special type of function that can be paused and resumed. Generators are useful for working with sequences of data, asynchronous programming, and creating iterators. Here are some real-life use cases and examples: Lazy Evaluation and Infinite Sequences: Generators allow for lazy evaluation, meaning they produce values on-demand rather than generating them all at once. This is particularly useful when working with infinite sequences. function * infiniteSequence () { let i = 0 ; while ( true ) { yield i ++ ; } } const sequence = infiniteSequence (); console . log ( sequence . next (). value ); // 0 console . log ( sequence . next (). value ); // 1 Asynchronous Programming: Generators can be used with asynchronous code to simplify complex asynchronous flows. This is often seen in combination with promises. function fetchData ( url ) { return fetch ( url ) . then ( response => response . json ()) . then ( d