JavaScript Output Methods (Brief Explanation)

 

JavaScript can show output (results or messages) in many ways. The most common methods are:

1. `innerHTML` – Displays output inside an HTML element.  

   ```html

   document.getElementById("demo").innerHTML = "Hello JavaScript!";

   ```

   It is used to change content on a webpage directly.

2. `document.write()` – Writes output directly to the HTML page.  

   ```html

   document.write("Welcome!");

   ```

   It is mostly used for testing because it can erase the page after loading.

3. *`alert()* – Displays a popup message box.  

   ```html

   alert("This is an alert box!");

   ```

   Useful for showing simple messages.

4. *console.log()`* – Shows output in the browser console (for debugging).  

   ```html

   console.log("This is a log message");

   ```

5. *`window.print()`* – Opens the print dialog for the webpage.  

   ```html

   window.print();

   ```

Each method serves a different purpose — for example, `console.log()` is great for developers, while `innerHTML` changes what users see on the screen.

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