The oninvalid event attribute works when an input field values are invalid or empty. The script run when a user clicks on the submit button. The required input field must be filled before submitting it.
Supported Tags:
Syntax:
<element oninvalid = "script">
Attribute Value: This attribute contains single value script which works when oninvalid attribute called. It is supported by all HTML elements.
Example:
html
<!DOCTYPE html>
<html>
<head>
<title>oninvalid Event Attribute</title>
<style>
h1 {
color:green;
}
body {
text-align:center;
}
</style>
</head>
<body>
<h1>GeeksForGeeks</h1>
<h2>oninvalid Event Attribute</h2>
<form action="#" method="post">
First Name : <input type = "text" oninvalid =
alert('Please Fill all input field!') required><br><br>
Last Name : <input type = "text" oninvalid =
alert('Please Fill all input field!') required><br>
<input type="submit" value="Submit">
</form>
</body>
</html>
|
Output:
Supported Browsers: The browser supported by oninvalid event attribute are listed below:
- Chrome 10
- Edge 12
- Internet Explorer 10
- Firefox 4
- Opera 10
- Safari 5
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Last Updated :
16 Aug, 2022
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