Q361. What is the fetch API in Next.js App Router?
In the Next.js App Router, you can use the `fetch` API to make HTTP requests to external APIs or your own API routes. The `fetch` function is available globally in both s...
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Q362. How do you search a string for a pattern?
You can use the `test()` method of regular expression in order to search a string for a pattern, and return true or false depending on the result. ```javascript var patte...
Q363. How do you create route groups in the App Router?
Route groups allow you to organize routes without affecting the URL structure. You create them by wrapping folder names in parentheses `()`. ``` app/ ├── (marketing)/ │ ├...
Q364. What is the purpose of exec method?
The purpose of exec method is similar to test method but it executes a search for a match in a specified string and returns a result array, or null instead of returning t...
Q365. What is React memo function?
Class components can be restricted from re-rendering when their input props are the same using **PureComponent or shouldComponentUpdate**. Now you can do the same with fu...
Q366. What are parallel routes in Next.js App Router?
Parallel routes allow you to render multiple pages simultaneously in the same layout. They are defined using slots with the `@` convention. ``` app/ ├── layout.js ├── pag...
Q367. How do you change the style of a HTML element?
You can change inline style or classname of a HTML element using javascript DOM-manipulation 1. **Using style property:** You can modify inline style using style property...
Q368. How do you implement intercepting routes in App Router?
Intercepting routes allow you to load a route from another part of your application while keeping the context of the current page, similar to modals. ``` app/ ├── feed/ │...
Q369. What would be the result of 1+2+'3'?
The output is going to be `33`. Since `1` and `2` are numeric values, the result of the first two digits is going to be a numeric value `3`. The next digit is a string ty...
Q370. What is the loading.js file in App Router?
The `loading.js` file creates loading UI that shows instantly while route segments are loading. It automatically wraps the page and its children in a React Suspense bound...