12.1.1 Getting started with Haxe/JavaScript

Haxe can be a powerful tool for developing JavaScript applications. Let's look at our first sample. This is a very simple example showing the toolchain.

Create a new folder and save this class as Main.hx.

import js.Browser;
class Main {
    static function main() {
        var button = Browser.document.createButtonElement();
        button.textContent = "Click me!";
        button.onclick = function(event) {
            Browser.alert("Haxe is great");
        }
        Browser.document.body.appendChild(button);
    }
}

To compile, either run the following from the command line:

haxe -js main-javascript.js -main Main -D js-flatten -dce full

Another possibility is to create and run (double-click) a file called compile.hxml. In this example the hxml file should be in the same directory as the example class.

-js main-javascript.js
-main Main
-D js-flatten
-dce full

The output will be a main-javascript.js, which creates and adds a clickable button to the document body.

Run the JavaScript

To display the output in a browser, create an HTML-document called index.html and open it.

<!DOCTYPE html>
<html>
	<body>
		<script src="main-javascript.js"></script>
	</body>
</html>
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