Hi
I'm not a big fan of dynamic programming languages, although I've written a lot of JavaScript code. I never quite understood the concept of prototype-based programming; does anyone know how it works?
I was working on a JavaScript project with the source checking if an element contains a class.
I'm currently doing this:

code_text
var test = document.getElementById("test");
var testClass = test.className;

switch (testClass) {
  case "class1":
    test.innerHTML = "I have class1";
    break;
  case "class2":
    test.innerHTML = "I have class2";
    break;
  case "class3":
    test.innerHTML = "I have class3";
    break;
  case "class4":
    test.innerHTML = "I have class4";
    break;
  default:
    test.innerHTML = "";
}
<div id="test" class="class1"></div>

The problem is when I change the HTML code to...
<div id="test" class="class1 class5"></div>
There is no longer an exact match, so I get the standard output of nothing (""). But I still want the output to be I have class1 because <div> still contains class .class1 .
Can someone help me