jQuery toggleAttr

A simple jQuery plugin for toggling attributes, similar to how toggleClass works for CSS classes. Created so that if-else constructs like the following:

// 'unsavedChanges' is a boolean value
if (unsavedChanges) {
    $('button#save').removeAttr('disabled');
} else {
    $('button#save').attr('disabled', 'disabled');
}

can become:

$('button#save').toggleAttr('disabled', 'disabled', !unsavedChanges);

Installing

Include the jQuery library first, and then the toggleAttr plugin:

<script src="toggleattr.jquery.js" type="text/javascript></script>

Usage

Call toggleAttr on an element:

$('#someElement').toggleAttr(<attrName>, <attrValue>, <stateVal>)

The only required parameter is <attrName> - <attrValue> and <stateVal> are both optional. <stateVal> is used for the same purpose as the optional second parameter to jQuery core's toggleClass - if true, it forces the attribute to be added; if false, it forces the attribute to be removed.

Examples

Toggle an attribute with no value:

HTML before:

<input type="text" />

JS:

$('input').toggleAttr('myattr');

HTML after:

<input type="text" myattr />

JS:

$('input').toggleAttr('myattr');

HTML after:

<input type="text" />

Toggle an attribute with a value:

HTML before:

<div></div>

JS:

$('div').toggleAttr('myattr', 'myValue');

HTML after:

<div myattr="myValue"></div>

Toggle an attribute with the stateVal parameter

HTML before:

<div myattr="myValue"></div>

JS:

$('div').toggleAttr('myattr', 'myValue', true);

HTML after:

<div myattr="myValue"></div>

If the <stateVal> parameter is true and the attribute already exists, the value will be updated to <attrValue>:

JS:

$('div').toggleAttr('myattr', 'myNewValue', true);

HTML after:

<div myattr="myNewValue"></div>

License

The plugin is licensed under the MIT License.

Changelog

• v1.0.0: First release