Execute Events Only Once in jQuery

To wire up a click event to a button(Submit1), it is as simple as this:

<script type="text/javascript">
$(function() {
$("#Submit1").click(function() {
alert("Alert fires each time you click this button");
});
});

</script>

The alert shows up each time you click on the button. However if you want to fire an event only once, use one() which executes the handler only once for each matched element. Here’s how:

<html xmlns="http://www.w3.org/1999/xhtml">
<
head>
<
title>Executing Events only Once in jQuery</title>
<
script src="http://code.jquery.com/jquery-latest.js"
type="text/javascript"></script>

<
script type="text/javascript">
$(function() {
$("#Submit1")
.one("click", function(event) {
alert("Alert wont fire again. Try!");
});
});
</script>
</
head>

<
body>
<
input id="Submit1" type="submit" value="submit" />
</
body>
</
html>


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About The Author

Suprotim Agarwal
Suprotim Agarwal, Developer Technologies MVP (Microsoft Most Valuable Professional) is the founder and contributor for DevCurry, DotNetCurry and SQLServerCurry. He is the Chief Editor of a Developer Magazine called DNC Magazine. He has also authored two Books - 51 Recipes using jQuery with ASP.NET Controls. and The Absolutely Awesome jQuery CookBook.

Follow him on twitter @suprotimagarwal.