on

英[ɒn]   美[ɑ:n]  

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

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

adj. active situation, state ;Used; Happening; Planned

dblclick

UK[dblk'lɪk] US[dblk'lɪk]

Double click , double click (mouse)

javascript ondblclick attribute syntax

Function: Occurs when the object is double-clicked.

Syntax: ondblclick="SomeJavaScriptCode"

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

javascript ondblclick attribute example

<html>
<body>

Field1: <input type="text" id="field1" value="Hello World!">
<br />
Field2: <input type="text" id="field2">
<br /><br />
Click the button below to copy the content of Field1 to Field2.
<br />
<button ondblclick="document.getElementById('field2').value=
document.getElementById('field1').value">Copy Text</button>

</body>
</html>

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