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Please learn how to run the code on your computer.

Running JavaScript code on Windows, macOS, and Linux is relatively straightforward.

Windows

Using Node.js
- Install Node.js from the official website (https://nodejs.org/).
- Open the command prompt (search for "cmd" in the Start menu).
- Type `node` to open the Node.js interactive REPL (Read-Eval-Print Loop) where you can enter and run JavaScript code.
macOS

Using Terminal and Node.js

- Open the Terminal (search for it using Spotlight or find it in the Applications > Utilities folder).
- Install Node.js using a package manager like Homebrew (`brew install node`) or download it from the official website.
- Type `node` to open the Node.js interactive REPL where you can enter and run JavaScript code.
Linux

Terminal and Node.js

- Open the Terminal from the Applications menu.
- Install Node.js using a package manager appropriate for your Linux distribution (e.g., `sudo apt-get install nodejs` on Debian-based systems).
- Type `node` to open the Node.js interactive REPL where you can enter and run JavaScript code.

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Write a program that prints the first 10 multiples of a given number. If the number is negative or zero, print an error message.

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Write a function that converts temperature from Celsius to Fahrenheit. The formula for conversion is: `F = (C * 9/5) + 32`.

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Create a simple webpage with a button. When the button is clicked, change the text of a paragraph to a new message.

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Create an array of numbers. Use the `map()` method to double each number, and then use the `filter()` method to keep only the even numbers. Finally, use a loop to print the resulting array.

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Create an object that represents a book. Include properties like `title`, `author`, `year`, and `isAvailable`. Then, use both dot notation and bracket notation to access and display the book's information.

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Create a constructor `Rectangle` that takes `width` and `height` as parameters. Add a method `calculateArea()` that calculates and returns the area of the rectangle.

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Create a function that fetches weather information for a specific city from the [OpenWeatherMap API](https://openweathermap.org/api). Display the temperature, weather conditions, and other relevant data in the console.

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Create an `async` function that simulates fetching data from an API. Use `setTimeout` to simulate a delay. Handle both successful and failed outcomes using Promises.

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Submit the Weather App