我们正在使用来自这个小提琴的jquery ui tabs箭头插件：http://jsfiddle.net/dECtZ/282/，但是像许多插件一样，它打破了最新版本的jQuery。我们能够使csscur工作，但仍然在jquery核心中得到以下错误（第353行）：
Uncaught TypeError：无法分配给只读属性'length'的函数（e，t）{if（！this._createWidget）返回new o（e，t）; arguments.length＆amp;＆amp; this._createWidget（e ，t）}
代码如下：
(function($, undefined) {
if (!$.xui) {
$.xui = {};
}
var tabs = $.extend({}, $.ui.tabs.prototype),
_super = {
_create: tabs._create,
_destroy: tabs._destroy,
_update: tabs._update
};
$.xui.tabs = $.extend(tabs, {
options: $.extend({}, tabs.options, {
scrollable: false,
changeOnScroll: false,
closable: false,
resizable: false,
resizeHandles: "e,s,se"
}),
_create: function() {
var self = this,
o = self.options;
_super._create.apply(self);
if (o.scrollable) {
self.element.addClass("ui-tabs-scrollable");
var scrollContainer = $('<div class="ui-tabs-scroll-container"></div>').prependTo(this.element);
self.header = $('<div class="ui-tabs-nav-scrollable ui-widget-header ui-corner-all"></div>').prependTo(scrollContainer);
var nav = self.element.find(".ui-tabs-nav:first").removeClass("ui-widget-header ui-corner-all").appendTo(this.header);
var arrowsNav = $('<ol class="ui-helper-reset ui-helper-clearfix ui-tabs-nav-arrows"></ol>').prependTo(self.element);
var navPrev = $('<li class="ui-tabs-arrow-previous ui-state-default ui-corner-bl ui-corner-tl" title="Previous"><a href="#"><span class="ui-icon ui-icon-carat-1-w">Previous tab</span></a></li>').prependTo(arrowsNav).hide(),
navNext = $('<li class="ui-tabs-arrow-next ui-state-default ui-corner-tr ui-corner-br" title="Next"><a href="#"><span class="ui-icon ui-icon-carat-1-e">Next tab</span></a></li>').appendTo(arrowsNav).hide();
var scrollTo = function(to, delay) {
var navWidth = 0,
arrowWidth = navPrev.outerWidth(),
marginLeft = -(parseInt(nav.css("marginLeft"), 10)),
hwidth = self.header.width(),
newMargin = 0;
nav.find("li").each(function() {
navWidth += $(this).outerWidth(true);
});
if (to instanceof $.Event) {
} else {
newMargin = marginLeft+to;
if (newMargin > (navWidth-hwidth)) {
newMargin = (navWidth-hwidth);
} else if (newMargin < 0) {
newMargin = 0;
}
nav.stop(true).animate({
marginLeft: -(newMargin)
}, delay, function(){
$(window).trigger("resize.tabs");
});
}
}
var holdTimer = false;
navPrev.add(navNext).bind({
"click": function(e) {
var isNext = this === navNext[0];
e.preventDefault();
if (o.changeOnScroll) {
self.select(self.options.selected + (isNext ? 1 : -1));
} else {
if (!holdTimer)
scrollTo(isNext ? 150 : -150, 250);
}
},
"mousedown": function(e){
if (!o.changeOnScroll) {
var isNext = this === navNext[0],
duration = 10, pos = 15, timer;
if (holdTimer)
clearTimeout(holdTimer);
holdTimer = setTimeout(timer = function(){
scrollTo(isNext ? pos : -(pos), duration);
holdTimer = setTimeout(arguments.callee, duration);
}, 150);
}
},
"mouseup mouseout": function(e){
if (!o.changeOnScroll) {
clearTimeout(holdTimer);
holdTimer = false;
nav.stop();
}
}
});
self.header.bind('mousewheel', function(e, d, dX, dY) {
e.preventDefault();
if (d === -1) {
navNext.click();
} else if (d === 1) {
navPrev.click();
}
});
$(window).bind("resize.tabs", function(e) {
var navWidth = 0;
var arrowWidth = navPrev.outerWidth();
nav.find("li").each(function() {
navWidth += $(this).outerWidth(true);
});
var marginLeft = -(parseInt(nav.css("marginLeft"), 10)),
hwidth = self.header.width();
if (navWidth > (hwidth+marginLeft)) {
self.header.addClass("ui-tabs-arrow-r");
navNext.show("fade");
if (marginLeft > 0) {
self.header.addClass("ui-tabs-arrow-l");
navPrev.show("fade");
} else {
self.header.removeClass("ui-tabs-arrow-l");
navPrev.hide("fade");
}
} else {
self.header.removeClass("ui-tabs-arrows ui-tabs-arrow-l");
navNext.hide("fade");
if (marginLeft > 0) {
self.header.addClass("ui-tabs-arrow-l");
navPrev.show("fade");
} else {
self.header.removeClass("ui-tabs-arrow-l");
navPrev.hide("fade");
}
}
}).trigger("resize.tabs");
arrowsNav.find("li").bind({
"mouseenter focus": function(e) {
$(this).addClass("ui-state-hover");
},
"mouseleave blur": function(e) {
$(this).removeClass("ui-state-hover");
}
});
this.anchors.bind("click.tabs", function(){
var li = $(this).parent(),
arrowWidth = navPrev.outerWidth(),
width = li.outerWidth(true),
hwidth = self.header.width(),
pos = li.position().left,
marginLeft = -(parseInt(nav.stop(true,true).css("marginLeft"),10)),
newMargin = -1;
if (li.index() === 0) {
newMargin = 0;
} else if ((pos+width) >= (hwidth+marginLeft)) {
newMargin = pos-hwidth+width;
if ((li.index()+1) < nav.find("li").length) {
newMargin += arrowWidth;
}
} else if (pos < marginLeft) {
newMargin = pos-arrowWidth;
}
if (newMargin > -1) {
nav.animate({
marginLeft: -(newMargin)
}, 250, function(){
$(window).trigger("resize.tabs");
});
}
});
}
return self;
},
_update: function(){
console.log(arguments);
_super._update.apply(this);
}
});
$.widget("xui.tabs", $.xui.tabs);
})(jQuery);
$(function() {
$("#tabs").tabs({
scrollable: true,
changeOnScroll: false,
closable: true
});
$("#switcher").themeswitcher();
});
答案 0 :(得分：2)
我在jquery-ui 1.10.3和jquery-ui-1.9.2中找到了解决方法。 JQuery本身的版本似乎没有什么区别。
所以，在第427行的jquery-ui-1.10.3.custom.js
$.each( existingConstructor._childConstructors, function( i, child ) {
失败，因为使用此扩展名未定义_childConstructors。
我已经通过
解决了这个问题在.each
之前添加一个检查以查看是否未定义existingConstructor._childConstructors原始
if ( existingConstructor ) {
$.each( existingConstructor._childConstructors, function( i, child ) {
var childPrototype = child.prototype;
// redefine the child widget using the same prototype that was
// originally used, but inherit from the new version of the base
$.widget( childPrototype.namespace + "." + childPrototype.widgetName, constructor, child._proto );
});
// remove the list of existing child constructors from the old constructor
// so the old child constructors can be garbage collected
delete existingConstructor._childConstructors;
} else {
base._childConstructors.push( constructor );
}
以便其中的代码读取
if ( existingConstructor ) {
if (!(typeof existingConstructor._childConstructors === 'undefined')) {
$.each( existingConstructor._childConstructors, function( i, child ) {
var childPrototype = child.prototype;
// redefine the child widget using the same prototype that was
// originally used, but inherit from the new version of the base
$.widget( childPrototype.namespace + "." + childPrototype.widgetName, constructor, child._proto );
});
// remove the list of existing child constructors from the old constructor
// so the old child constructors can be garbage collected
delete existingConstructor._childConstructors;
}
} else {
base._childConstructors.push( constructor );
}
不是最好的解决方法，但它确实适用于jquery-ui-1.9.2和jquery-ui-1.10.3以及我尝试过的所有最近的jquery.js。
在jquery-ui-1.9.2.custom.js中，行号约为460