Events+Callbacks

by pw_we1

HTML

<button id="b1">Test</button>
<br>
<label for="e1">Was sind "Callbacks"?</label>
<br>
<input id="e1"/>

JavaScript

var b1 = document.getElementById("b1");
b1.addEventListener("click", function() {
 alert("Subscription 1");
});
$("#b1").click(function() {
 alert("Subscription 2");
});
$("#e1").on("input", function() {
 if ($("#e1").val() == "Funktionen höherer Ordnung")
  alert("Korrekt");
});