Introduction to MERN

How much Js should one know.

• Variable (let, const, var)
• Hoisting of Variable.
• Functions(Arrow Function, Higher Order Functions)
• Arrays and Objects(Array Destructuring, Object Destructuring, rest operator, spread operator)
• Condition(Optional Chaining).
• Arrays Method(map,filter,reduce,sort)
• Event Listeners(Click Events, onBlur, onChange, onFocus)
• setTimeout() and setInterval()
• Asynchronous Events(CallBacks, Callback Hell, Promises, Promise APIs).
• async and await.
• try and catch.