What is the difference between Double equal(==) and Triple (===)?
Double equal and triple equal mainly same thing. But they have a big difference. Double equal check just value. Double equal find out many types of value. But triple equal is very strict. Triple equal check value and exact type.
What is the difference between Null and undefined?
How to event bubble work?
Event bubble is very tricky things. If I clicked a li item. They at this we also clicked ul item and container item. Because ul and container is parent item of li. That’s why we call, when I clicked a item. That this we also clicked this item’s parent item.
What is DOM?
What is an API?
API is server container where we got data. And send data. API usually make by node.js. Node help us maintain server side. Sometime we need data then we got data from api. and we also send data. and we can update api data.
The purpose of API, GET, POST?
Sometimes we need ready data. And this data make by me or other data. This sequence call api. We got data from api by get method. We need to send data into api. We send data in api by using post method.
What is arrow function?