Q881. What is an environment record?
According to ECMAScript specification 262 (9.1): > [Environment Record](https://262.ecma-international.org/12.0/#sec-environment-records) is a specification type used to ...
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Q882. What is the purpose of renderToNodeStream method?
The `ReactDOMServer#renderToNodeStream` method is used to generate HTML on the server and send the markup down on the initial request for faster page loads. It also helps...
Q883. How to verify if a variable is an array?
It is possible to check if a variable is an array instance using 3 different ways, 1. Array.isArray() method: The `Array.isArray(value)` utility function is used to deter...
Q884. How do you get redux scaffolding using create-react-app?
Redux team has provided official redux+js or redux+typescript templates for create-react-app project. The generated project setup includes, 1. Redux Toolkit and React-Red...
Q885. What is pass by value and pass by reference?
Pass-by-value creates a new space in memory and makes a copy of a value. Primitives such as string, number, boolean etc will actually create a new copy. Hence, updating o...
Q886. What is state mutation and how to prevent it?
`State mutation` happens when you try to update the state of a component without actually using `setState` function. This can happen when you are trying to do some comput...
Q887. What are the differences between primitives and non-primitives?
JavaScript language has both primitives and non-primitives but there are few differences between them as below, | Primitives | Non-primitives | | ------------------------...
Q888. What are React Mixins?
**⚠️ DEPRECATED:** Mixins are considered legacy and should not be used in modern React applications. _Mixins_ were a way to share common functionality between components ...
Q889. How do you create your own bind method using either call or apply method?
The custom bind function needs to be created on Function prototype inorder to use it as other builtin functions. This custom function should return a function similar to ...
Q890. Can I use javascript urls in react16.9?
**⚠️ DEPRECATED:** As of React 19, `javascript:` URLs are no longer supported and may throw errors. In React 16.9, `javascript:` URLs would log a warning in the console b...