In this article, we need to Detect Alt/Option + another key in textarea by using HTML and JavaScript. It detects both the keys i.e. Alt + h. The onkeydown Event occurs when someone presses a key (on the keyboard).
Syntax:
<textarea onkeydown="newScript" >
Example: The below code illustrates to detect that when the user pressed the Alt + h keys on the textarea. It will produce an alert message.
HTML
<body>
<h1 style="color:green">
GeeksForGeeks
</h1>
<h2>
How to detect Alt/Option +
another key in textarea?
</h2>
<textarea onkeydown="myFunction(event);"></textarea>
<script>
function myFunction(e) {
// It check both altKey + 'A' or 'a'
if (e.altKey && e.key === "h") {
alert(
"GeeksforGeeks says Detection successfully ");
}
}
</script>
</body>
|
Note: We can also use ASCII code for detecting the keys.
Output:
Supported Browsers are listed below:
- Google Chrome
- Internet Explorer
- Firefox
- Opera
- Safari
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Last Updated :
24 Jan, 2023
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