HTML | onfocus Event Attribute
This onfocus attribute works when the element gets focused. This event attribute is mostly used with <input>, <select>, <a> elements. This event attribute is supported by all HTML elements excepts <base>, <bdo>, <br>, <head>, <html>, <iframe>, <meta>, <param>, <script>, <style>, and <title> elements.
Supported Tags: It supports all HTML elements which are given below:
- <base>
- <bdo>
- <br>
- <head>
- <html>
- <iframe>
- <meta>
- <param>
- <script>
- <style>
- <title>
Syntax:
<element onfocus = "script">
Attribute Value: The script value run when onfocus attribute called.
Example:
html
<!DOCTYPE html><html> <head> <title>onfocus attribute</title> <style> h1 { color:green; } body { text-align:center; } input { color:white; margin-top:5px; border:1px solid black; border-radius:3px; } </style> <script> function sudo(x) { document.getElementById(x).style.background = "green"; } </script> </head> <body> <h1>GeeksforGeeks</h1> <h2>onfocus event attribute</h2> First name: <input type="text" id="fname" onfocus="sudo(this.id)"><br> Last name: <input type="text" id="lname" onfocus="sudo(this.id)"> </body> |
Output:
Supported Browsers: The browser supported by onfocus attribute are listed below:
- Apple Safari 3.1
- Google Chrome 1
- Edge 12
- Firefox 24
- Opera 11.6
- Internet Explorer 9
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