Q1571. Why React tab is not showing up in DevTools?
When the page loads, _React DevTools_ sets a global named `__REACT_DEVTOOLS_GLOBAL_HOOK__`, then React communicates with that hook during initialization. If the website i...
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Q1572. Is it possible to use both App Router and Pages Router in the same Next.js project?
Yes, it is possible to use both App Router and Pages Router in the same Next.js project. You can have the `app` directory for the App Router and the `pages` directory for...
Q1573. What is the procedure to run tests in node?
By proper mocking, you can bundle tests with webpack and run them on node without having depenceny on Browser API. It involves 2 steps, 1. **Create webpack config:** Crea...
Q1574. Explain split(), sub(), subn() methods of "re" module in Python.
To modify the strings, Python's "re" module is providing 3 methods. They are: split() – uses a regex pattern to "split" a given string into a list. sub() – finds all subs...
Q1575. What are variables in SASS?
Variables in Sass (SCSS) store reusable styling values (colors, spacing units, fonts) identified by a dollar sign (**`$`**) prefix: ```scss // Definition $primary-blue: #...
Q1576. What are the benefits of initializing variables?
It is recommended to initialize variables because of the below benefits, 1. It gives cleaner code 2. It provides a single place to initialize variables 3. Avoid undefined...
Q1577. What are Styled Components?
`styled-components` is a JavaScript library for styling React applications. It removes the mapping between styles and components, and lets you write actual CSS augmented ...
Q1578. Are there any limitations of the App Router in Next.js?
Yes, some limitations of the App Router include: - It is only available in Next.js 13 and later versions. - It may not support all features available in the Pages Router....
Q1579. What is the procedure to run tests in browser?
Below are the steps to run tests in real browser, 1. Install `mocha-loader`. 2. Configure webpack config entry point to 'mocha-loader!babel-loader!./test.js'. 3. Start we...
Q1580. What are negative indexes and why are they used?
The sequences in Python are indexed and it consists of the positive as well as negative numbers. The numbers that are positive uses '0' that is uses as first index and '1...