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JavaScript oninvalid Event

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JavaScript oninvalid Event

The oninvalid event occurs when a submittable element has been checked for validity and doesn't satisfy its constraints.

oninvalid Event as Attribute

Example

HTML Online Editor
<!DOCTYPE html> <html> <body> <p>Type something without '@' and click submit.</p> <form action="/email.php" method="get"> <input type="email" oninvalid="myFunction()" name="myEmail" required> <input type="submit" value="Submit"> </form> <script> function myFunction(){ alert("Invalid Email Address"); } </script> </body> </html>

Syntax

As Attribute

<element oninvalid = "JavaScript">

As Property

object.oninvalid = function(){ // code };

Using Event Listener

object.addEventListener("invalid" , myScript);

Browser Support

Devicedesktopmobile
Browsergoogle chromesafarifirefoxinternet Exploreredgeoperagoogle chromesafarifirefoxedgeoperaandroid webviewsamsung internet
oninvalidYesYesYesYesYesYesYesYesYesYesYesYesYes

oninvalid Event as Property

Example

HTML Online Editor
<!DOCTYPE html> <html> <body> <p>Type something without '@' and click submit.</p> <form action="/email.php" method="get"> <input type="email" name="myEmail" required> <input type="submit" value="Submit"> </form> <script> var x = document.getElementsByTagName("input")[0]; function myFunction(){ alert("Invalid Email Address"); } x.oninvalid = myFunction; </script> </body> </html>

Using addEventListener() Method

Note: The addEventListener() method is not supported in Internet Explorer 8 and below.

Example

HTML Online Editor
<!DOCTYPE html> <html> <body> <p>Type something without '@' and click submit.</p> <form action="/email.php" method="get"> <input type="email" name="myEmail" required> <input type="submit" value="Submit"> </form> <script> var x = document.getElementsByTagName("input")[0]; function myFunction(){ alert("Invalid Email Address"); } x.addEventListener("invalid", myFunction); </script> </body> </html>

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