jQuery UI可选 – 使多个选择默认
我需要默认进行多项选择，因此用户不必按住ctrl。 非常感谢一些帮助，谢谢。
如果要使用selectable，可能需要将bind meta key与mousedown事件一起使用。 这里已经有一场争论了，我刚用谷歌搜索时发现了。
$("#selectable").selectable(); $("#selectable").on("selectablestart", function (event, ui) { event.originalEvent.ctrlKey = true; }); 我曾经需要类似的东西。
这是一个很好的例子，说明如何做到这一点。 我想它可能会给你一些想法。
http://www.joelanman.com/static/examples/multiple_selection/
这也是教程链接
http://www.joelanman.com/2009/03/simple-multiple-selection-with-checkbox-lists-and-jquery/
好吧，如果你想修改可选代码，可以在顶部的选项对象中添加一个选项（我称之为我的multi_no_key，默认为false）。
然后，查找声明var doSelect的位置，它最初看起来像这样
var doSelect = !event.metaKey || !selectee.$element.hasClass('ui-selected');
并将其改为此
var doSelect; if(!options.multi_no_key) doSelect = !event.metaKey || !selectee.$element.hasClass('ui-selected'); else doSelect = !selectee.$element.hasClass('ui-selected');
在同一个_mouseStart方法中，查找以下代码
this.selectees.filter('.ui-selected').each(function() { var selectee = $.data(this, "selectable-item"); selectee.startselected = true; if (!event.metaKey) { selectee.$element.removeClass('ui-selected'); selectee.selected = false; selectee.$element.addClass('ui-unselecting'); selectee.unselecting = true; // selectable UNSELECTING callback self._trigger("unselecting", event, { unselecting: selectee.element }); } });
并更改条件以检查multi_no_key的选项
this.selectees.filter('.ui-selected').each(function() { var selectee = $.data(this, "selectable-item"); selectee.startselected = true; if (!event.metaKey && options.multi_no_key == false) { selectee.$element.removeClass('ui-selected'); selectee.selected = false; selectee.$element.addClass('ui-unselecting'); selectee.unselecting = true; // selectable UNSELECTING callback self._trigger("unselecting", event, { unselecting: selectee.element }); } });
我对此进行了测试，它对我来说效果很好。 以下是可选择的js文件的全部内容（版本1.8.12）
/* * jQuery UI Selectable 1.8.12 * * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about) * Dual licensed under the MIT or GPL Version 2 licenses. * http://jquery.org/license * * http://docs.jquery.com/UI/Selectables * * Depends: * jquery.ui.core.js * jquery.ui.mouse.js * jquery.ui.widget.js */ (function( $, undefined ) { $.widget("ui.selectable", $.ui.mouse, { options: { appendTo: 'body', autoRefresh: true, distance: 0, filter: '*', tolerance: 'touch', multi_no_key: false }, _create: function() { var self = this; this.element.addClass("ui-selectable"); this.dragged = false; // cache selectee children based on filter var selectees; this.refresh = function() { selectees = $(self.options.filter, self.element[0]); selectees.each(function() { var $this = $(this); var pos = $this.offset(); $.data(this, "selectable-item", { element: this, $element: $this, left: pos.left, top: pos.top, right: pos.left + $this.outerWidth(), bottom: pos.top + $this.outerHeight(), startselected: false, selected: $this.hasClass('ui-selected'), selecting: $this.hasClass('ui-selecting'), unselecting: $this.hasClass('ui-unselecting') }); }); }; this.refresh(); this.selectees = selectees.addClass("ui-selectee"); this._mouseInit(); this.helper = $(""); }, destroy: function() { this.selectees .removeClass("ui-selectee") .removeData("selectable-item"); this.element .removeClass("ui-selectable ui-selectable-disabled") .removeData("selectable") .unbind(".selectable"); this._mouseDestroy(); return this; }, _mouseStart: function(event) { var self = this; this.opos = [event.pageX, event.pageY]; if (this.options.disabled) return; var options = this.options; this.selectees = $(options.filter, this.element[0]); this._trigger("start", event); $(options.appendTo).append(this.helper); // position helper (lasso) this.helper.css({ "left": event.clientX, "top": event.clientY, "width": 0, "height": 0 }); if (options.autoRefresh) { this.refresh(); } this.selectees.filter('.ui-selected').each(function() { var selectee = $.data(this, "selectable-item"); selectee.startselected = true; if (!event.metaKey && options.multi_no_key == false) { selectee.$element.removeClass('ui-selected'); selectee.selected = false; selectee.$element.addClass('ui-unselecting'); selectee.unselecting = true; // selectable UNSELECTING callback self._trigger("unselecting", event, { unselecting: selectee.element }); } }); $(event.target).parents().andSelf().each(function() { var selectee = $.data(this, "selectable-item"); if (selectee) { var doSelect; if(!options.multi_no_key) doSelect = !event.metaKey || !selectee.$element.hasClass('ui-selected'); else doSelect = !selectee.$element.hasClass('ui-selected'); selectee.$element .removeClass(doSelect ? "ui-unselecting" : "ui-selected") .addClass(doSelect ? "ui-selecting" : "ui-unselecting"); selectee.unselecting = !doSelect; selectee.selecting = doSelect; selectee.selected = doSelect; // selectable (UN)SELECTING callback if (doSelect) { self._trigger("selecting", event, { selecting: selectee.element }); } else { self._trigger("unselecting", event, { unselecting: selectee.element }); } return false; } }); }, _mouseDrag: function(event) { var self = this; this.dragged = true; if (this.options.disabled) return; var options = this.options; var x1 = this.opos[0], y1 = this.opos[1], x2 = event.pageX, y2 = event.pageY; if (x1 > x2) { var tmp = x2; x2 = x1; x1 = tmp; } if (y1 > y2) { var tmp = y2; y2 = y1; y1 = tmp; } this.helper.css({left: x1, top: y1, width: x2-x1, height: y2-y1}); this.selectees.each(function() { var selectee = $.data(this, "selectable-item"); //prevent helper from being selected if appendTo: selectable if (!selectee || selectee.element == self.element[0]) return; var hit = false; if (options.tolerance == 'touch') { hit = ( !(selectee.left > x2 || selectee.right < x1 || selectee.top > y2 || selectee.bottom < y1) ); } else if (options.tolerance == 'fit') { hit = (selectee.left > x1 && selectee.right < x2 && selectee.top > y1 && selectee.bottom < y2); } if (hit) { // SELECT if (selectee.selected) { selectee.$element.removeClass('ui-selected'); selectee.selected = false; } if (selectee.unselecting) { selectee.$element.removeClass('ui-unselecting'); selectee.unselecting = false; } if (!selectee.selecting) { selectee.$element.addClass('ui-selecting'); selectee.selecting = true; // selectable SELECTING callback self._trigger("selecting", event, { selecting: selectee.element }); } } else { // UNSELECT if (selectee.selecting) { if (event.metaKey && selectee.startselected) { selectee.$element.removeClass('ui-selecting'); selectee.selecting = false; selectee.$element.addClass('ui-selected'); selectee.selected = true; } else { selectee.$element.removeClass('ui-selecting'); selectee.selecting = false; if (selectee.startselected) { selectee.$element.addClass('ui-unselecting'); selectee.unselecting = true; } // selectable UNSELECTING callback self._trigger("unselecting", event, { unselecting: selectee.element }); } } if (selectee.selected) { if (!event.metaKey && !selectee.startselected) { selectee.$element.removeClass('ui-selected'); selectee.selected = false; selectee.$element.addClass('ui-unselecting'); selectee.unselecting = true; // selectable UNSELECTING callback self._trigger("unselecting", event, { unselecting: selectee.element }); } } } }); return false; }, _mouseStop: function(event) { var self = this; this.dragged = false; var options = this.options; $('.ui-unselecting', this.element[0]).each(function() { var selectee = $.data(this, "selectable-item"); selectee.$element.removeClass('ui-unselecting'); selectee.unselecting = false; selectee.startselected = false; self._trigger("unselected", event, { unselected: selectee.element }); }); $('.ui-selecting', this.element[0]).each(function() { var selectee = $.data(this, "selectable-item"); selectee.$element.removeClass('ui-selecting').addClass('ui-selected'); selectee.selecting = false; selectee.selected = true; selectee.startselected = true; self._trigger("selected", event, { selected: selectee.element }); }); this._trigger("stop", event); this.helper.remove(); return false; } }); $.extend($.ui.selectable, { version: "1.8.12" }); })(jQuery);
老实说，我刚刚对’c.metaKey’进行了查找/替换，并将其替换为jqui脚本上的’true / * edited * /’…脏，但有效。