HTML DOM onfocus Event
The HTML DOM onfocus event occurs when an element gets focused. The onfocus event is mostly used with <input>, <select>, and <a>. The onfocus event is the opposite of the onblur event.
Syntax:
- In HTML:
<element onfocus="myScript">
- In JavaScript:
object.onfocus = function(){myScript};
- In JavaScript, using the addEventListener() method:
object.addEventListener("focus", myScript);
Note: The onfocus event is different from the onfocusin event because the onfocus event does not bubble.
Example 1: This example explains the onfocus event in the HTML.
html
< center > < h1 style = "color:green" > w3wiki </ h1 > < h2 > HTML DOM onfocus Event </ h2 > < br > Name: < input type = "text" onfocus = "geekfun(this)" > < script > function geekfun(gfg) { gfg.style.background = "green"; } </ script > </ center > |
Output:
Example 2: In this example, we will learn about the onfocus event by using Javascript.
html
< center > < h1 style = "color:green" > w3wiki </ h1 > < h2 >HTML DOM onfocus Event</ h2 > < br > Name: < input type = "text" id = "fname" > < script > document.getElementById( "fname").onfocus = function() { geekfun() }; function geekfun() { document.getElementById( "fname").style.backgroundColor = "red"; } </ script > </ center > |
Output:
Example 3: In this example, we will learn the onfocus event by the addEventListener() method.
html
< center > < h1 style = "color:green" > w3wiki </ h1 > < h2 >HTML DOM onfocus Event</ h2 > < br > Name: < input type = "text" id = "fname" > < script > document.getElementById( "fname").addEventListener( "focus", Beginnerfun); function Beginnerfun() { document.getElementById( "fname").style.backgroundColor = "green"; } </ script > </ center > |
Output:
We have a complete list of HTML DOM methods, to check those please go through this HTML DOM Object Complete reference article.
The HTML DOM onfocus event support all HTML tag EXCEPT: <base>, <bdo>, <br>, <head>, <html>, <iframe>, <meta>, <param>, <script>, <style>, <title>
Supported Browsers: The browsers supported by HTML DOM onfocus Event are listed below:
- Google Chrome
- Internet Explorer
- Firefox
- Apple Safari
- Opera
We have a Cheat Sheet on Javascript where we covered all the important topics of Javascript to check those please go through Javascript Cheat Sheet-A Basic guide to JavaScript.
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