Promise

Events Event manager Write event emitter-base class that allows you to add event listeners https://netbasal.com/javascript-the-magic-behind-event-emitter-cce3abcbcef9 Custom events Events can be created with the Event constructor as follows: let event = new Event(type[, options]); Debounce Throttling Reference https://javascript.info/dispatch-events

Closure Currying Borrowing sum(a, b)/ sum(a)(b) Caching Once method (implement a function that can be called only once)

Arrays, Objects, and Strings are commonly used types that we iterate using ‘for’. ‘for…in’, ‘for…of’ statements. Array iteration for Repeats until a specified condition evaluates to false. for ([init]; [condition]; [increment]) “All the three blocks in the for loop can be omitted. But should be declared before.” 2. for…of for (variable…

Functions Recursive function example 1 — factorial Recursive function example 2 — Fibonacci Recursive function example 3 — Decimal to binary conversion Pascal triangle I liked the below reference to generate the pascal triangle one row at a time using 2 functions: https://medium.com/javascript-in-plain-english/algorithms-101-pascals-triangle-in-javascript-9fbd9032871

Strings coding questions and answers String Reverse Reverse Words Palindrome Anagram Isomorphic Given a sentence, “Hello how are you HELLO”. Find the minimum distance between two words. Given input: hello, you. Output: 1. The input words are case insensitive (levenshteinDistance (s, t)) https://en.wikibooks.org/wiki/Algorithm_Implementation/Strings/Levenshtein_distance

Objects Check is given two objects are equal https://dmitripavlutin.com/how-to-compare-objects-in-javascript/ https://www.samanthaming.com/tidbits/33-how-to-compare-2-objects/ Extending object/ object deep clone

if…else if…else switch