Q811. What is mixins in TypeScript?
In TypeScript, mixins allow you to extend a class by combining the properties and methods from other classes. They provide a way to reuse code across multiple classes wit...
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Q812. What is IndexedDB?
IndexedDB is a low-level API for client-side storage of larger amounts of structured data, including files/blobs. This API uses indexes to enable high-performance searche...
Q813. How to apply validation on props in React?
When the application is running in _development mode_, React will automatically check all props that we set on components to make sure they have _correct type_. If the ty...
Q814. How do you add component-level CSS in Next.js?
Using CSS modules with a `.module.css` file extension. ``` // styles.module.css .example { color: red; font-size:18px; } // Component.js import styles from './styles.modu...
Q815. What are the supported modifiers on model?
There are three modifiers supported for v-model directive. **1. lazy:** By default, v-model syncs the input with the data after each input event. You can add the lazy mod...
Q816. Return number of records in Customers?
To return the total count of rows in the `Customers` table, use **`COUNT(*)`**: ```sql SELECT COUNT(*) AS total_customers FROM Customers; ``` ### `COUNT(*)` vs `COUNT(col...
Q817. Explain how can you generate random numbers in Python?
To generate random numbers in Python, you need to import command as import random random.random() This return s a random floating point number in the range [0,1)
Q818. What is the use of "em" tag?
The "em" tag is a semantic tag which is used to apply emphasis to a word or phrase within a paragraph. Example: The sentence "I really enjoyed cycling" could be written u...
Q819. What is declaration merging in TypeScript?
Declaration merging in TypeScript lets you combine multiple declarations with the same name into a single declaration. It allows you to add or extend properties, methods,...
Q820. What is web storage?
Web storage is an API that provides a mechanism by which browsers can store key/value pairs locally within the user's browser, in a much more intuitive fashion than using...