Q541. What is `prompt()` in JavaScript?
`prompt()` is a built-in JavaScript function that displays a dialog box to the user with a message, an input field, and OK/Cancel buttons. It allows the user to input dat...
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Q542. When to Use Internal and External JavaScript Code?
If you have only a few lines of code that is specific to a particular webpage. In that case, it is better to keep your JavaScript code internal within your HTML document....
Q543. What is npm?
NPM(Node Package Manager) is a helpful tool for developers that makes working with JavaScript easier. It's like a big library where they can find ready-to-use code and ea...
Q544. What is the name of the file which npm uses to identify the project and its dependencies?
The file that npm uses to identify the project and its dependencies is called "package.json". It serves as a configuration file where developers can specify information a...
Q545. What is the difference between dependencies and devDependencies?
Both are defined in the `package.json`. dependencies lists the packages that the project is dependent on. devDependencies lists the dependencies which are only required d...
Q546. What is a non-blocking function?
A non-blocking function, also known as an asynchronous function, is a type of function that does not block the execution of other code while it is running. Instead of wai...
Q547. What is a blocking function?
A **blocking function** is a function whose execution halts or pauses the execution of subsequent code instructions in the current thread until its task completes. ### Im...
Q548. What is Node.js?
Node.js is a JavaScript runtime for server-side applications. It lets you run JavaScript outside of web browsers, handle network requests, access databases, and build sca...
Q549. What is a PWA?
PWAs (Progressive Web Apps) are web applications that use JavaScript, HTML, and CSS to provide a mobile app-like experience. They work offline, send push notifications, a...
Q550. What are the different ways to debug JavaScript code?
To debug JavaScript code, you can use console.log() statements to print values and messages to the console, browser developer tools for breakpoints, stepping through code...