Dummy - Code snippet

<!doctype html><html lang="en">

<head>
    <meta http-equiv="Content-Type" content="text/html; charset=shift_jis"><title>jQuery UI Slider functionality
    </title> 
    <link href="https://code.jquery.com/ui/1.10.4/themes/ui-lightness/jquery-ui.css" rel="stylesheet"> 
    <script src="https://code.jquery.com/jquery-1.10.2.js"></script> 
    <script src="https://code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
<body> <h3>Slide Me!!</h3> <div id="slide"></div>  </body> 

</html>

document.addEventListener("DOMContentLoaded", () => {
    let slider_sections = document.querySelectorAll(".section_cards-slider");
    slider_sections.forEach(section => {
        if (section.querySelectorAll(".c-card-item").length < 1) {
            section.classList.add("is-hidden");
            if (section.getAttribute("id") == "Inspiration") {
                document.querySelector("#inspiration-btn").classList.add("is-hidden");
            }
        }
    })
})





let card_item = document.querySelector(".card-item.is-orange")
console.log(card_item)

card_item.addEventListener("click", () => {
    card_item.classList.add("new-class")
})



let card_items = document.querySelectorAll(".section_about-us .images_wrapper");
console.log(card_items)
card_items.forEach(item => {
    let size_attribute = item.getAttribute("data-size");
    if (size_attribute == "Small") {
        item.classList.add("is-small")
    }
    else if (size_attribute == "Medium") {
        item.classList.add("is-medium")
    }
    else if (size_attribute == "Large") {
        item.classList.add("is-large")
    }
})

public function testCheck()
 {
     $d = new dummy();
     $_SERVER["REQUEST_METHOD"] = "POST";
     $res = $d->check(array('101A', 'UTN', 45888, 4, 400, 2.3, 'NO', 'Alen', 4789658963));
     $this->assertEquals(array('101A', 'UTN', 45888, 4, 400, 2.3, 'NO', 'Alen', 4789658963), $res);
     //res:OK
     $res = $d->check(array('101A', 'UTN', 4588998, 4, 400, 2.3, 'NO', 'Alen', 4789658963));
     $this->assertEquals("Please fill out a valid zip code.", $res);
     // res: OK
     $res = $d->check(array('101A', 'UTN', 4588998, 4, 400, 2.3, 'NO', 'Alen', 4789658963));
     $this->assertEquals("Please fill out a valid id.", $res);
     // res: Failure
 }