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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