graalvm-demos/web-image/export-java-function/index.html at master · graalvm/graalvm-demos · GitHub

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<!DOCTYPE html>
<html>
<body>
    <h2>GraalVM Web Image</h2>

    <input type="number" id="num1" value="0">
    <br><br>
    <input type="number" id="num2" value="0">
    <br><br>

    <button id="addButton">Add</button>
    <button id="clearButton">Clear</button>
    <br><br>

    <div id="output"></div>

    <script src="adder.js"></script>
    <script>
    GraalVM.run([]).then(() => {
        const addButton = document.getElementById("addButton");
        const clearButton = document.getElementById("clearButton");
        const output = document.getElementById("output");

        addButton.addEventListener("click", () => {
            const a = parseInt(document.getElementById("num1").value);
            const b = parseInt(document.getElementById("num2").value);

            // Call the Java add function via WebAssembly
            const result = globalThis.adder(a, b);

            output.innerText = `Result: ${result}`;
        });

        clearButton.addEventListener("click", () => {
            document.getElementById("num1").value = 0;
            document.getElementById("num2").value = 0;
            output.innerText = "";
        });
    });
    </script>
</body>
</html>