Jquery plugin development example-jquery plugin development (1)
/*! * jQuery lightweight plugin boilerplate * Original author: @ajpiano * Further changes, comments: @addyosmani * Licensed under the MIT license */// the semi-colon before the function invocation is a safety// net against concatenated scripts and/or other plugins// that are not closed properly.;(function ( $, window, document, undefined ) { // undefined is used here as the undefined global // variable in ECMAScript 3 and is mutable (i.e. it can // be changed by someone else). undefined isn't really // being passed in so we can ensure that its value is // truly undefined. In ES5, undefined can no longer be // modified. // window and document are passed through as local // variables rather than as globals, because this (slightly) // quickens the resolution process and can be more // efficiently minified (especially when both are // regularly referenced in your plugin). // Create the defaults once var pluginName = 'defaultPluginName', defaults = { propertyName: "value" }; // The actual plugin constructor function Plugin( element, options ) { this.element = element; // jQuery has an extend method that merges the // contents of two or more objects, storing the // result in the first object. The first object // is generally empty because we don't want to alter // the default options for future instances of the plugin this.options = $.extend( {}, defaults, options) ; this._defaults = defaults; this._name = pluginName; this.init(); } Plugin.prototype.init = function () { // Place initialization logic here // You already have access to the DOM element and // the options via the instance, e.g. this.element // and this.options }; // A really lightweight plugin wrapper around the constructor, // preventing against multiple instantiations $.fn[pluginName] = function ( options ) { return this.each(function () { if (!$.data(this, 'plugin_' + pluginName)) { $.data(this, 'plugin_' + pluginName, new Plugin( this, options )); } }); }})( jQuery, window, document );