Data Structures ( objects, arrays, const , let ) Closures Conditionals(if, else, else if, switch case) Loops Promises Promises Array methods (some, find, every) Functional methods (map , filter ) Functional methods (map , filter , reduce) Ajax Arrow Functions Events preventDefault https://www.youtube.com/playlist?list=PLkDTLUcoIKU2iOY4L0_KRIkG7Bi3ZD9NL https://www.youtube.com/watch?v=3CgTZMHr1ug&list=PLkDTLUcoIKU3wjpmdgU0YjqcUyOSfCwOr https://www.youtube.com/watch?v=KePc40zUsek&list=PLkDTLUcoIKU39CGxyDVyGbqkmL3LwQRzB