Super simple, lightweight and solid factory of jQuery plugins. It allows to follow classic JavaScript patterns instead of jQuery's while creating plugin.

• Support all modern browsers (including mobile browsers)
• Support Internet Explorer 7-8 (needs jQuery 1.8 or older)
• Support jQuery version from 1.6
• Support Zepto (needs data module)
• Around 600 bytes compressed
• Efficient code re-usage when writing several plugins
• Support requirejs/webpack and amd
• Test mode

Bower

bower install --save jquery-factory

Npm

npm install --save jquery-factory

var $ = require('jquery')(window),
    newPlugin = require('jquery-factory')($);

<script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
<script src="/path/to/newPlugin.jquery.js"></script>

Produces new jQuery plugin in $.fn object with Constr function. Factory accepts string pluginName. If plugin with the same name is exists factory throws an error.

pluginName — name of creating plugin. Should not contain name of existing plugins and internal jQuery methods

Constr — constructor Function for new plugin.

callback — callback function (deprecated)

Constr takes $element, options and htmlData arguments.

$element contains jQuery oblect of current element

options has any data passed while plugin init

htmlData has value of data-<pluginname> attribute (for example <span data-plugin="myText"></span>).

By default each created plugin has built-in init, update and destroy methods that could be redefined.

init method should contain event handlers attaching, initial data, adding classes, etc.

update method using for options update and changing instance state. Method will be called if plugin instance was already created on element.

destroy method for final destroying: handlers unattaching and plugin instance removing (using .removeData).

You can append any method by adding it to prototype of constructor function.

Plugin instance stores with jQuery .data method so you can get it for testing or other purposes.

You can enable test mode by giving callback argument to $.newPlugin. callback accepts plugin instance context and should return true to continue instance attaching or false to prevent it.

To check accessory of $.fn.pluginName use __constr__ property with Constr to check plugin accessory:

$('.element').data(pluginName) instanceof $.fn.pluginName.__constr__

Plugin that does nothing:

(function($) {
  var Plugin = function() {}
  $.newPlugin('plugin', Plugin);
})(jQuery);

Usage:

$('.element-set').plugin();

Plugin accepts option and attached element. The opt class adding when attaching plugin.

(function($) {
  var Plugin = function($el, opt) {
    this.$el = $el;
    this.opt = opt;
    
    this.$el.addClass(opt);
  }
  $.newPlugin('plugin', Plugin);
})(jQuery);

Usage:

$('.element-set').plugin('some-class');

(function($) {
  var clickHandler = function(e) {
    var self = e.data;
    e.preventDefault();
    // do something
  }
  
  var Plugin = function($el, opt) {
    this.$el = $el;
    this.opt = $.extend({
      text : ''
    }, opt);
    
    this.init();
  }
  
  // init handlers
  Plugin.prototype.init = function() {
    this.$el
      .on('click', this, clickHandler)
      .text(this.opt.text);
  }
  
  // updating text option
  Plugin.prototype.update = function(opt) {
    $.extend(this.opt, opt);
    this.$el.text(this.opt.text);
  }
  
  // destroy method
  Plugin.prototype.destroy = function() {
    this.$el
      .off('click', clickHandler)
      .removeData('plugin');
  }
  
  // custom method
  Plugin.prototype.smartMove = function() {
    this.$el
      .toggleClass('smart-class');
  }
  
  $.newPlugin('plugin', Plugin);
})(jQuery);

Usage:

// creating
$('.element-set').plugin({
  text : 'This is new instance of "plugin"'
});

// updating
$('.element-set').plugin('update', {
  text : 'blah!'
});

// updating (other way)
$('.element-set').plugin({
  text : 'Blah-blah!'
});

// call custom method
$('.element-set').plugin('smartMove');

// destroying
$('.element-set').plugin('destroy');

More examples available in tests

• Create plugin instances with Object.create (will loose compatibility with old browsers)
• More tests
• More examples
• Adapt (maybe fork?) for BEM development process
• Сompatibility tests with Zepto

You are welcomed to improve this small piece of software :)

• Kir Peremenov

• asg-3d
• KlonD90