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(             "neveropen says Detection successfully ");             }         }     </script> </body> |
Note: We can also use ASCII code for detecting the keys.Â
Output:
Â
Supported Browsers are listed below:
- Google Chrome
- Internet Explorer
- Firefox
- Opera
- Safari
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