invalid | oninvalid event

Provides specified alert text if an input element is invalid.

HTML5 A vocabulary and associated APIs for HTML and XHTML, 6.1.5

Syntax

HTML Attribute	<element oninvalid = "handler(event)">
Event Property	object.oninvalid = handler;
attachEvent Method	object.attachEvent("oninvalid", handler)
addEventListener Method	object.addEventListener("invalid", handler, useCapture)

Event information

Synchronous	No
Bubbles	No
Cancelable	Yes

Event handler parameters

pEvtObj [in]: Type: IHTMLEventObj

Standards information

HTML5 A vocabulary and associated APIs for HTML and XHTML, 6.1.5

Examples

The following snippet is an example of oninvalid being used to throw an alert if a user submits no text into a required text field.

HTML


<html>
<body>
  <form>
    Password:
    <input type="text" oninvalid="alert('Please enter a password');" required>
    <input type="submit" value="Submit">
  </form>
</body>
</html>