Q621. What are the major features of Vue.js?
Below are the some of major features available with VueJS 1. **Virtual DOM:** It uses virtual DOM similar to other existing frameworks such as ReactJS, Ember etc. Virtual...
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Q622. How to select all records from table Products?
```sql SELECT * FROM products; ``` ⚠️ *Interview tip*: Always follow up with "But in production, I list explicit columns to reduce network overhead and prevent breaking i...
Q623. What are the tools that help to find bugs or perform static analysis?
PyChecker is a static analysis tool that detects the bugs in Python source code and warns about the style and complexity of the bug. Pylint is another tool that verifies ...
Q624. What is the difference between <b> and <strong> tags in HTML?
The `` tag is used to apply bold formatting to text, while the `` tag is used to indicate that the text is important and carries stronger semantic meaning than ``.
Q625. What is the purpose of type annotations in TypeScript, and how are they used?
The purpose of type annotations in TypeScript is to specify the types of variables, function parameters, and return values. They help catch errors during development and ...
Q626. What is a first order function?
A first-order function is a function that doesn’t accept another function as an argument and doesn’t return a function as its return value. i.e, It's a regular function t...
Q627. What are synthetic events in React?
`SyntheticEvent` is a cross-browser wrapper around the browser's native event. Its API is same as the browser's native event, including `stopPropagation()` and `preventDe...
Q628. Explain ROC-AUC and when it can be misleading.
ROC-AUC is the probability that a randomly chosen positive example is ranked above a randomly chosen negative one. It summarizes performance across all thresholds, and 0....
Q629. What is the purpose of the `pages or app` directory in Next.js?
The `pages` and `app` directories in Next.js represent the **routing and layout backbone** of the application. Next.js uses file-system based routing, meaning your filesy...
Q630. What are the lifecycle methods of Vue.js?
Lifecycle hooks are a window into how the library you're using works behind-the-scenes. By using these hooks, you will know when your component is created, added to the D...