Q451. What are the different ways to access object properties?
There are 3 possible ways for accessing the property of an object. 1. **Dot notation:** It uses dot for accessing the properties ```javascript objectName.property; ``` 2....
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Q452. What are the differences between Redux and MobX?
Below are the main differences between Redux and MobX, | Topic | Redux | MobX | | ------------- | ------------------------------------------------------------- | --------...
Q453. What are the function parameter rules?
JavaScript functions follow below rules for parameters, 1. The function definitions do not specify data types for parameters. 2. Do not perform type checking on the passe...
Q454. Should I learn ES6 before learning ReactJS?
No, you don’t have to learn es2015/es6 to learn react. But you may find many resources or React ecosystem uses ES6 extensively. Let's see some of the frequently used ES6 ...
Q455. What is an error object?
An error object is a built in error object that provides error information when an error occurs. It has two properties: name and message. For example, the below function ...
Q456. Explain concurrent rendering with an example
Concurrent rendering in React 18 lets React prepare UI updates in a non-blocking way. This means React can pause low-priority rendering work, handle urgent updates first ...
Q457. When do you get a syntax error?
A SyntaxError is thrown if you try to evaluate code with a syntax error. For example, the below missing quote for the function parameter throws a syntax error ```javascri...
Q458. What is the difference between async mode and concurrent mode?
Both refers the same thing. Previously concurrent Mode being referred to as "Async Mode" by React team. The name has been changed to highlight React’s ability to perform ...
Q459. What are the different error names from error object?
There are 7 different types of error names returned from error object, | Error Name | Description | |---- | --------- | `AggregateError` | An error indicating that multip...
Q460. What is the purpose of eslint plugin for hooks?
The ESLint plugin enforces rules of Hooks to avoid bugs. It assumes that any function starting with ”use” and a capital letter right after it is a Hook. In particular, th...