The Map object store key-value pairs and remembers the original insertion order of the keys
The set object store unique value of any types, It’s maybe primitive or object types
Explain: Map and Set with Javascript
javascript
Most useful array method: filter and map
Map and filter method used for operation on the array. Like select element or operation each element, Before filter and map method we use normally for and forEach method.
Explain: Three dots or spread operator
Unbelievable Feature release by ES6. it’s called spread operator or rest operator
The spread operator is used for spread syntax. This operator use in array and object. We also called spread elements