Here's a simple JavaScript program that displays the text "Hello World" on the screen:
This program is a basic HTML file that contains a script tag that contains JavaScript code. The JavaScript code uses the document.write() method to write the string "Hello World" to the web page.
The <!DOCTYPE> declaration defines the document type as an HTML document.
The <html> element is the container for all other HTML elements, and <body> element is the container for all the content of an HTML document.
The <script> element is used to define a script, such as a JavaScript. The script is executed by the browser.
When the program is executed, the web browser reads the HTML and JavaScript code, and then renders the "Hello World" message on the screen.
This is a very simple program, but it demonstrates the basic structure of a JavaScript program and how to use the document.write() method to display text on a web page.
Please note that this program must be executed in a web browser and it is not recommended to use document.write() method in production, as it can overwrite the entire document if called after the page has loaded.
You can practice this program using any text editor that supports HTML and JavaScript. Some popular options include:
- Visual Studio Code: A free and open-source code editor developed by Microsoft, it supports a wide variety of programming languages, including HTML and JavaScript. It also provides features like syntax highlighting, code completion, and built-in debugging.
- Sublime Text: A cross-platform code editor that supports a wide variety of programming languages, including HTML and JavaScript. It also provides features like syntax highlighting, code completion, and built-in debugging.
- Atom: A free and open-source code editor developed by GitHub, it supports a wide variety of programming languages, including HTML and JavaScript. It also provides features like syntax highlighting, code completion, and built-in debugging.
- Notepad++: A free and open-source code editor for Windows, it supports a wide variety of programming languages, including HTML and JavaScript. It also provides features like syntax highlighting, code completion, and built-in debugging.
- Adobe Dreamweaver: A professional web design and development tool that supports HTML, CSS, and JavaScript. It also provides features like a visual layout editor, code completion, and built-in debugging.
All the above options will allow you to write, edit and execute this program.
You can also use online platforms like JSFiddle or CodePen to run the programs and see the results. These platforms are online code editors that allow you to write, edit, and execute HTML, CSS, and JavaScript code in a web browser.
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