alertHello

alertHello is a simple JavaScript function that displays a pop-up alert box in a web browser with the message "Hello!". It is a basic example often used to demonstrate the execution of JavaScript code within an HTML document or as a starting point for more complex scripting. The function is defined using the `function` keyword followed by the name `alertHello` and parentheses `()`. Inside the curly braces `{}`, the `alert()` method is called with the string argument "Hello!". When this function is invoked, typically by a user interaction like clicking a button or when a web page loads, the browser pauses execution and presents the alert box. This alert box contains the "Hello!" message and an "OK" button for the user to dismiss it. alertHello requires no external libraries or complex setup, making it readily accessible for beginners learning web development. Its primary purpose is to provide immediate visual feedback that a specific piece of JavaScript code has been executed.