Jaxon

The global function rq() takes a class name as parameter, and returns a call factory for the methods in that class. The calls are made using a fluent syntax, for example rq('HelloWorld')->sayHello(1).

<div class="row">
    <div class="col-md-12" id="hello-text">
        &nbsp;
    </div>
    <div class="col-md-4 select">
        <select class="form-select form-control" id="colorselect" name="colorselect" <?= attr()
            ->on('change', rq('HelloWorld')->setColor(Jaxon\select('colorselect'))) ?>>
            <option value="black" selected="selected">Black</option>
            <option value="red">Red</option>
            <option value="green">Green</option>
            <option value="blue">Blue</option>
        </select>
    </div>
    <div class="col-md-8 buttons">
        <button type="button" class="btn btn-primary" <?= attr()
            ->click(rq('HelloWorld')->sayHello(1)) ?> >CLICK ME</button>
        <button type="button" class="btn btn-primary" <?= attr()
            ->click(rq('HelloWorld')->sayHello(0)) ?> >Click Me</button>
    </div>
</div>

                                    

<?php

class HelloWorld
{
    public function sayHello(bool $isCaps)
    {
        $text = $isCaps ? 'HELLO WORLD!' : 'Hello World!';
        $xResponse = jaxon()->newResponse();
        $xResponse->assign('hello-text', 'innerHTML', $text);
    }

    public function setColor(string $sColor)
    {
        $xResponse = jaxon()->newResponse();
        $xResponse->assign('hello-text', 'style.color', $sColor);
    }

    public function showError($sMessage)
    {
        $xResponse = jaxon()->newResponse();
        $xResponse->assign('hello-text', 'innerHTML', $sMessage);
    }
}

// Register object
$jaxon = jaxon();

$jaxon->app()->setup(configFile('class.php'));
// Js options
$jaxon->setOptions(['lib' => ['uri' => '/js'], 'app' => ['minify' => false]], 'js');

                                    

jaxon.dom.ready(() => {
    // Call the HelloWorld class to populate the 2nd div
    <?= rq('HelloWorld')->sayHello(0) ?>;
    // call the HelloWorld->setColor() method on load
    <?= rq('HelloWorld')->setColor(Jaxon\select('colorselect')) ?>;
});