Q911. How do you add custom headers in Next.js?
Custom HTTP headers (such as CORS permissions, Cache-Control policies, or security headers like `Content-Security-Policy` and `X-Frame-Options`) can be configured in **`n...
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Q912. Describe about validations available for props?
Vue provides validations such as types, required fields, default values along with customized validations. You can provide an object with validation requirements to the v...
Q913. Can you join a table to itself?
Yes — **SELF JOIN**. You must use aliases to distinguish the two instances. ```sql SELECT a.name AS employee, b.name AS manager FROM employees a, employees b WHERE a.mana...
Q914. What is Python's standard way of identifying a block of code?
Python uses **indentation** (typically 4 spaces according to PEP 8) rather than curly braces (`{}`) or `begin`/`end` keywords to define blocks of code such as functions, ...
Q915. How can you make an image clickable in HTML?
To make an image clickable, we have to use anchor tag with the image tag nested inside it and specify where we want to be directed to in "href" attribute when image in cl...
Q916. How do you check web workers browser support?
You need to check browser support for web workers before using it ```javascript if (typeof Worker !== "undefined") { // code for Web worker support. } else { // Sorry! No...
Q917. How to enable production mode in React?
You should use Webpack's `DefinePlugin` method to set `NODE_ENV` to `production`, by which it strip out things like propType validation and extra warnings. Apart from thi...
Q918. What is the use of next export command?
Historically, **`next export`** was the CLI command used to export a Next.js application into pure static HTML/CSS/JS files that could be hosted on any static hosting pro...
Q919. How do you customize model directive for a component?
The v-model directive on a component uses **value** as the prop and **input** as the event, but some input types such as `checkboxes` and `radio buttons` may need to use ...
Q920. What is true about Cartesian Products?
A Cartesian product occurs when tables are joined **without a condition**. Every row in Table A pairs with every row in Table B: `m × n` rows total. It's usually a bug, b...