Displaying a variable value in an alert box in JavaScript is a common task when developing web applications. The process is simple and involves using the `alert()` method provided by JavaScript. By passing the variable as an argument to the `alert()` method, you can display its value in an alert box.<\/p>\n
**To display a variable value in an alert box in JavaScript, use the following code:**
\n“`javascript
\nvar myVariable = “Hello, world!”;
\nalert(myVariable);
\n“`<\/p>\n
In the above code snippet, we first declare a variable `myVariable` with the value `”Hello, world!”`. We then use the `alert()` method to display the value of `myVariable` in an alert box.<\/p>\n