Definition There is no concise definition than on MDN for destructuring assignments: The destructuring assignment syntax is a JavaScript expression that makes it possible to unpack values from arrays, or properties from objects, into distinct variab...

slice[startIndex, endIndex) Slice method is used to extract the part of array based on the start and end indexes passed as the parameter. It returns the extracted part and does not modify the original array. The endIndex is optional, if not given it...

These functions are usually used when we want to set the this keyword independent of how the function is being called in our code. Lets understand this in a clear way with an example. Assume a flight company minimal object, it stores the name of t...