原文:

背景：原jquery.ui.accordion插件，最多只能展开一个，不能展开多个，后来在网上找到了一个基于它的一个修改版（），但使用后发现它给Array加了一个方法（Array.prototype.hasObject），这样就导致了一个问题：在其它页面使用js遍历一个数组的时候，发现此数组多了一个hasObject值。故做了下修改，希望写JS的prototype不要乱用！！！！！！！！！！！！！

修改版如下：

注：$('#multiOpenAccordion').multiAccordion("option", "active", "all");用set的方式写，all和none才会和效！此插件怎么用，请参考jquery UI文档。

 

(function ($) {    $.widget('ui.multiAccordion', {        options: {            active: 0,            showAll: null,            hideAll: null,            _classes: {                accordion: 'ui-accordion ui-widget ui-helper-reset ui-accordion-icons',                h3: 'ui-accordion-header ui-helper-reset ui-state-default ui-corner-all',                div: 'ui-accordion-content ui-helper-reset ui-widget-content ui-corner-bottom',                divActive: 'ui-accordion-content-active',                span: 'ui-icon ui-icon-triangle-1-e',                stateDefault: 'ui-state-default',                stateHover: 'ui-state-hover'            }        },        _create: function () {            var self = this,			options = self.options,			$this = self.element,			$h3 = $this.children('h3'),			$div = $this.children('div');            $this.addClass(options._classes.accordion);            $h3.each(function (index) {                var $this = $(this);                $this.addClass(options._classes.h3).prepend(''.replace(/{class}/, options._classes.span));                if (self._isActive(index)) {                    self._showTab($this)                }            }); // end h3 each            $this.children('div').each(function (index) {                var $this = $(this);                $this.addClass(options._classes.div);            }); // end each            $h3.bind('click', function (e) {                // preventing on click to navigate to the top of document                e.preventDefault();                var $this = $(this);                var ui = {                    tab: $this,                    content: $this.next('div')                };                self._trigger('click', null, ui);                if ($this.hasClass(options._classes.stateDefault)) {                    self._showTab($this);                } else {                    self._hideTab($this);                }            });            $h3.bind('mouseover', function () {                $(this).addClass(options._classes.stateHover);            });            $h3.bind('mouseout', function () {                $(this).removeClass(options._classes.stateHover);            });            // triggering initialized            self._trigger('init', null, $this);        },        // destroying the whole multi open widget        destroy: function () {            var self = this;            var $this = self.element;            var $h3 = $this.children('h3');            var $div = $this.children('div');            var options = self.options;            $this.children('h3').unbind('click mouseover mouseout');            $this.removeClass(options._classes.accordion);            $h3.removeClass(options._classes.h3).removeClass('ui-state-default ui-corner-all ui-state-active ui-corner-top').children('span').remove();            $div.removeClass(options._classes.div + ' ' + options._classes.divActive).show();        },        // private helper method that used to show tabs        _showTab: function ($this) {            var $span = $this.children('span.ui-icon');            var $div = $this.next();            var options = this.options;            $this.removeClass('ui-state-default ui-corner-all').addClass('ui-state-active ui-corner-top');            $span.removeClass('ui-icon-triangle-1-e').addClass('ui-icon-triangle-1-s');            $div.slideDown('fast', function () {                $div.addClass(options._classes.divActive);            });            var ui = {                tab: $this,                content: $this.next('div')            }            this._trigger('tabShown', null, ui);        },        // private helper method that used to show tabs         _hideTab: function ($this) {            var $span = $this.children('span.ui-icon');            var $div = $this.next();            var options = this.options;            $this.removeClass('ui-state-active ui-corner-top').addClass('ui-state-default ui-corner-all');            $span.removeClass('ui-icon-triangle-1-s').addClass('ui-icon-triangle-1-e');            $div.slideUp('fast', function () {                $div.removeClass(options._classes.divActive);            });            var ui = {                tab: $this,                content: $this.next('div')            }            this._trigger('tabHidden', null, ui);        },        // helper method to determine wether passed parameter is an index of an active tab or not        _isActive: function (num) {            var options = this.options;            // if array            if (typeof options.active == "boolean" && !options.active) {                return false;            } else {                if (options.active.length != undefined) {                    for (var i = 0; i < options.active.length; i++) {                        if (options.active[i] == num)                            return true;                    }                } else {                    return options.active == num;                }            }            return false;        },        // return object contain currently opened tabs        _getActiveTabs: function () {            var $this = this.element;            var ui = [];            $this.children('div').each(function (index) {                var $content = $(this);                if ($content.is(':visible')) {                    //ui = ui ? ui : [];                    ui.push({                        index: index,                        tab: $content.prev('h3'),                        content: $content                    });                }            });            return (ui.length == 0 ? undefined : ui);        },        getActiveTabs: function () {            var el = this.element;            var tabs = [];            el.children('div').each(function (index) {                if ($(this).is(':visible')) {                    tabs.push(index);                }            });            return (tabs.length == 0 ? [-1] : tabs);        },        // setting array of active tabs        _setActiveTabs: function (tabs) {            var self = this;            var $this = this.element;            if (typeof tabs != 'undefined') {                $this.children('div').each(function (index) {                    var $tab = $(this).prev('h3');                    if (jQuery.inArray(index, tabs) != -1) {                        self._showTab($tab);                    } else {                        self._hideTab($tab);                    }                });            }        },        // active option passed by plugin, this method will read it and convert it into array of tab indexes        _generateTabsArrayFromOptions: function (tabOption) {            var tabs = [];            var self = this;            var $this = self.element;            var size = $this.children('h3').size();            if ($.type(tabOption) === 'array') {                return tabOption;            } else if ($.type(tabOption) === 'number') {                return [tabOption];            } else if ($.type(tabOption) === 'string') {                switch (tabOption.toLowerCase()) {                    case 'all':                        var size = $this.children('h3').size();                        for (var n = 0; n < size; n++) {                            tabs.push(n);                        }                        return tabs;                        break;                    case 'none':                        tabs = [-1];                        return tabs;                        break;                    default:                        return undefined;                        break;                }            }        },        // required method by jquery ui widget framework, used to provide the ability to pass options        // currently only active option is used here, may grow in the future        _setOption: function (option, value) {            $.Widget.prototype._setOption.apply(this, arguments);            var el = this.element;            switch (option) {                case 'active':                    this._setActiveTabs(this._generateTabsArrayFromOptions(value));                    break;                case 'getActiveTabs':                    var el = this.element;                    var tabs;                    el.children('div').each(function (index) {                        if ($(this).is(':visible')) {                            tabs = tabs ? tabs : [];                            tabs.push(index);                        }                    });                    return (tabs.length == 0 ? [-1] : tabs);                    break;            }        }    });})(jQuery);