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javascript onfocus attribute

Chinese translationRecent Updates：2019-02-13 13:07:33

on

UK[ɒn] 美[ɑ:n]

prep. (indicates direction) to; (indicates object) to; ( Indicates position) on...; (indicates time) at the time of...

adv. (put, wear, connect) on; forward, (continue) down

adj. active Situation, status; being used; happening; planned

focus

UK[ˈfəʊkəs] US[ˈfoʊkəs]

vt. & vi. (to) concentrate, (to) gather; adjust (lens, eye) focus [focal length] in order to see clearly

vt. Adjust (eye or lens) focal length; concentrate (beam on); focus , gaze; concentrate

n. focus; clarity of image; center (of activity, attention, interest, etc.); [medical] focus, illness

Third person singular: focuses Plural: foci Present participle: focusing Past tense: focused Past participle: focused

javascript onfocus attribute Video explanation

javascript onfocus attribute syntax

Function: Occurs when the object gains focus.

Syntax: onfocus="SomeJavaScriptCode"

Parameters: SomeJavaScriptCode Required. Specifies the JavaScript to be executed when this event occurs.

javascript onfocus attribute example

<html>
<head>
<script type="text/javascript">
function setStyle(x)
{
document.getElementById(x).style.background="yellow"
}
</script>
</head>
<body>

First name: <input type="text" onfocus="setStyle(this.id)" id="fname">
<br />
Last name: <input type="text" onfocus="setStyle(this.id)" id="lname">

</body>
</html>

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