Q321. Can we define properties for functions?
Yes, we can define properties for functions because functions are also objects. ```javascript fn = function (x) { //Function code goes here }; fn.name = "John"; fn.profil...
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Q322. What is form action in Next.js?
The `formAction` is a special attribute used in Next.js to define the action URL for a form submission. It allows you to specify a server-side function that will handle t...
Q323. What is the way to find the number of parameters expected by a function?
You can use `function.length` syntax to find the number of parameters expected by a function. Let's take an example of `sum` function to calculate the sum of numbers, ```...
Q324. How do you handle file uploads in Next.js?
By using the `formData` API in a server action to handle file uploads. ```jsx // app/upload/page.js "use server"; export async function handleUpload(formData) { const fil...
Q325. What is a polyfill?
A polyfill is a piece of JS code used to provide modern functionality on older browsers that do not natively support it. For example, Silverlight plugin polyfill can be u...
Q326. How to use Polymer in React?
You need to follow below steps to use Polymer in React, 1. Create a Polymer element: ```jsx harmony ; Polymer({ is: "calendar-element", ready: function () { this.textCont...
Q327. Mention some common use cases for the App Router in Next.js.
- Creating nested routes with layouts. - Implementing server-side rendering for dynamic content. - Handling API routes for backend functionality. - Managing authenticatio...
Q328. What are break and continue statements?
The break statement is used to "jump out" of a loop. i.e, It breaks the loop and continues executing the code after the loop. ```javascript for (i = 0; i < 10; i++) { if ...
Q329. One of the main differences between the App Router and Pages Router in Next.js?
The App Router allows for nested routes, layouts, and server components, while the Pages Router uses a flat file structure for routing and does not support nested routes ...
Q330. What are js labels?
The label statement allows us to name loops and blocks in JavaScript. We can then use these labels to refer back to the code later. For example, the below code with label...