HTML onfocus Attribute

Example

First name: <input type="text" id="fname" onfocus="myFunction(this.id)"><br>
Last name: <input type="text" id="lname" onfocus="this.style.background='yellow'">

<script>
function myFunction(x) {
  document.getElementById(x).style.background = "yellow";
}
</script>

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Meaning

The onfocus attribute specifies that an element has received focus; namely, it has been selected for manipulation or data entry.

Standard Syntax

<element onfocus="script">

Applies to:

The onfocus attribute can be used on the following element:

Element	Attribute
All visible elements.	onfocus

Attribute Values

Value	Description
script	Specifies the script to be run on onfocus