JS Events

1. JS Can React to HTML Events

  • HTML events are "things" that happen to HTML elements.
  • JavaScript lets you execute code when events are detected.
  • An HTML event can be something the browser does, or something a user does.


<[element] [event name]="(JavaScript code)">


<!-- executes some javascript code or calls javascript function -->
<button onclick="document.getElementById('demo').innerHTML = Date()">The time is?</button>
<button onclick="displayDate()">The time is?</button>
<!-- changes the content of its own element -->
<button onclick="this.innerHTML = Date()">The time is?</button>
<!-- changes the style of its own element -->
<span onmouseover="this.style.color='red'" onmouseout="this.style.color='black'">Mouse over me!</span>

2. HTML Events

Event Description
onchange An HTML element has been changed
onclick The user clicks an HTML element
onmouseover The user moves the mouse over an HTML element
onmouseout The user moves the mouse away from an HTML element
onkeydown The user pushes a keyboard key
onload The browser has finished loading the page
..... ...

Complete list of HTML Events: HTML DOM Events

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