Q211. What are the steps involved in return false usage?
The return false statement in event handlers performs the below steps, 1. First it stops the browser's default action or behaviour. 2. It prevents the event from propagat...
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Q212. How to access Redux store outside a component?
You just need to export the store from the module where it created with `createStore()`. Also, it shouldn't pollute the global window object. ```javascript store = create...
Q213. What is BOM?
The Browser Object Model (BOM) allows JavaScript to "talk to" the browser. It consists of the objects navigator, history, screen, location and document which are children...
Q214. What are the drawbacks of MVW pattern?
1. DOM manipulation is very expensive which causes applications to behave slow and inefficient. 2. Due to circular dependencies, a complicated model was created around mo...
Q215. What is the use of setTimeout?
The setTimeout() method is used to call a function or evaluate an expression after a specified number of milliseconds. For example, let's log a message after 2 seconds us...
Q216. Are there any similarities between Redux and RxJS?
These libraries are very different for very different purposes, but there are some vague similarities. Redux is a tool for managing state throughout the application. It i...
Q217. What is the use of setInterval?
The setInterval() method is used to call a function or evaluate an expression at specified intervals (in milliseconds). For example, let's log a message after 2 seconds u...
Q218. How to reset state in Redux?
You need to write a _root reducer_ in your application which delegate handling the action to the reducer generated by `combineReducers()`. For example, let us take `rootR...
Q219. Why is JavaScript treated as Single threaded?
JavaScript is a single-threaded language. Because the language specification does not allow the programmer to write code so that the interpreter can run parts of it in pa...
Q220. What is the difference between React context and React Redux?
You can use **Context** in your application directly and is going to be great for passing down data to deeply nested components which what it was designed for. Whereas **...