How to click box to animate some object?

Hi there~ this is very simple question..

I attached my blender scene screen shot below.

there is nothing yet on my js file…

I want to animate my cube by clicking btn(the gray box).

I want to code does event without using Puzzles.

For now, my brain is empty and I don’t know how to get started.

Can you help me to solve this question?

'use strict';

window.addEventListener('load', function() {

var app = new v3d.App('container', null,
    new v3d.SimplePreloader({ container: 'container' }));

var url = 'hw.gltf';

app.load(url, function() {
    app.enableControls();
    runCode();
});

function runCode() {
    // add your code here, e.g. console.log('Hello, World!');
    window.addEventListener('click', onMouseClick, false);

    function onMouseClick( e ) {
        console.log("123123");
    }
}

});