Just Javascript - Javascript pollyfills and tricky questions.

Pollyfills:

• 👉 Array polly-fills like map, filter, forEach, reduce and flat
• 👉 Function polly-fills like .bind, .call & .apply
• 👉 Promise polly-fills like Promise.all(), .race(), .allSettled & more
• 👉 Async polly-fills like Async.parallel(executes tasks in parallel), Async series(executes tasks in series) & more

Interesting but useful functions to implement

• 👉 Implement currying function with example
• 👉 Implement the compose() function
• 👉 Implement the pipe() function
• 👉 Implement the debounce(Function, delay)
• 👉 Implement the throttle(Function, delay)
• 👉 Write a function that will memoize subsequent calls to a function
• 👉 Write a method that will flatten an object into a single object.
• 👉 Write a method that will flatten an array into a 1D array.
• 👉 Implement cloneDeep() function

Interesting patterns to implement

• 👉 Implement the publisher-subscriber pattern in javascript
• 👉 Implement Builder pattern with method chaining abilities
• 👉 Implement a class/function/utility which exhibits an event dispatcher mechanism
• 👉 Design patterns like Singleton, factory pattern

Misc:

• 👉 Attach a listener to an array which gets triggered when an item is pushed into the array
• 👉 Learn about Prototypes and Prototype Interitance
• 👉 Learn about Hoisting
• 👉 Learn about call stack
• 👉 Learn about closures
• 👉 Learn about this keyword