Q481. What is a decorator?
A decorator is an expression that evaluates to a function and that takes the target, name, and decorator descriptor as arguments. Also, it optionally returns a decorator ...
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Q482. What are the differences between Functional and Class Components?
There are two different ways to create components in ReactJS. The main differences are listed down as below, ## 1. Syntax: The class components uses ES6 classes to create...
Q483. What are the properties of the Intl object?
Below are the list of properties available on the `Intl` object, 1. **Collator:** These are the objects that enable language-sensitive string comparison. 2. **DateTimeFor...
Q484. What is strict mode in React?
`React.StrictMode` is a useful component for highlighting potential problems in an application. Just like ``, `` does not render any extra DOM elements. It activates addi...
Q485. What is an Unary operator?
The unary(+) operator is used to convert a variable to a number.If the variable cannot be converted, it will still become a number but with the value NaN. Let's see this ...
Q486. What is the benefit of strict mode?
The will be helpful in the below cases, 1. To find the bugs caused by impure rendering where the components will re-render twice. 2. To find the bugs caused by missing cl...
Q487. How do you sort elements in an array?
The `sort()` method is used to sort the elements of an array in place and returns the sorted array. The default sort order is ascending, based on the string Unicode order...
Q488. Why does strict mode render twice in React?
StrictMode renders components twice in development mode(not production) in order to detect any problems with your code and warn you about those problems. This is used to ...
Q489. What is the purpose of compareFunction while sorting arrays?
The compareFunction is used to define the sort order. If omitted, the array elements are converted to strings, then sorted according to each character's Unicode code poin...
Q490. What are the rules of JSX?
The below 3 rules needs to be followed while using JSX in a react application. 1. **Return a single root element**: If you are returning multiple elements from a componen...