Javascript Questions

WeakSet is a collection of objects that are stored using a weak reference. This means that the objects in the set are not directly accessible from outside the set.

A closure is a stateful function that is returned by another function.

It has access to the parent scope, even after the parent function has closed.

The call() invokes the function and allows you to pass in arguments one by one.

The apply() invokes the function and allows you to pass in arguments as an array.

The bind() method creates a new function that, when called, has this keyword set to the provided value, with a given sequence of arguments preceding any provided when the new function is called.

Typeof operator is used to check the type of a variable.

Function declarations

• like vars, they will be automatically hoisted
• load before any other code

Function expressions

• not hoisted
• only loads when the interpreter reaches it

Generator functions are functions that can be paused and resumed at any point. They are used to create iterators.

An Immediately Invoked Function is a function that is automatically invoked when it is defined.

WeakMap is a collection of key-value pairs where the keys are stored using a weak reference. This means that the keys are not directly accessible from outside the map.

Map object is used to perform map operations.

setTimeout and setInterval functions are used to perform asynchronous operations.