当我加载prototype.js时，我的javascript失败了，如何修复它？
我正在尝试为朋友的夏季购物车系统进行新设计。系统通常有出现/消失的子类别菜单，但后来我下载了一个名为“lightbox”的javascript插件，它在保留页面的同时在当前窗口中显示图像，而不是打开一个新窗口来显示图像。现在的问题是这个“lightbox”插件有一个名为“prototype.js”的文件，这会导致子类别无法工作...
Prototype.js： http://www.mediafire.com/?sj3xzdw2gchmca0
使子菜单出现/消失的代码：
$(function () {
var stepOver = 20; // The number of pixels of the upper box that are going to cover its parent.
$("#DropdownCategories ul li").hover(
function () {
var firstUls = $(this).find('ul:first');
firstUls.show();
var positionLeft = $(this).position().left - stepOver + $(this).outerWidth();
var offsetLeft = $(this).offset().left - stepOver + $(this).outerWidth();
// Find the position that the box is going to end in.
var wouldEnd = offsetLeft + firstUls.outerWidth();
// If the box ends out of the body we move the box on the left side.
if (wouldEnd > $('body').innerWidth()) {
positionLeft = $(this).position().left - firstUls.outerWidth() + stepOver;
}
firstUls.css('position', 'absolute')
.css('top', $(this).position().top + 'px')
.css('left', positionLeft + 'px');
},
function () {
$(this).find('ul:first').hide();
}
);
});
实际网站：http://www.sladurko.com/product/277/bluza -kas-rakav.html
I'm trying to make a new design for a friend's Summer Cart system. The system usually has appearing/disappearing subcategory menus, but then I downloaded a javascript plugin called "lightbox" that shows an image in the current window while it keeps the page, instead of opening up a new window where to show the image. Now the problem is that this "lightbox" plugin has a file called "prototype.js" which causes the subcategories not to work...
Prototype.js: http://www.mediafire.com/?sj3xzdw2gchmca0
The code that makes the submenus appear/disappear:
$(function () {
var stepOver = 20; // The number of pixels of the upper box that are going to cover its parent.
$("#DropdownCategories ul li").hover(
function () {
var firstUls = $(this).find('ul:first');
firstUls.show();
var positionLeft = $(this).position().left - stepOver + $(this).outerWidth();
var offsetLeft = $(this).offset().left - stepOver + $(this).outerWidth();
// Find the position that the box is going to end in.
var wouldEnd = offsetLeft + firstUls.outerWidth();
// If the box ends out of the body we move the box on the left side.
if (wouldEnd > $('body').innerWidth()) {
positionLeft = $(this).position().left - firstUls.outerWidth() + stepOver;
}
firstUls.css('position', 'absolute')
.css('top', $(this).position().top + 'px')
.css('left', positionLeft + 'px');
},
function () {
$(this).find('ul:first').hide();
}
);
});
The actual website: http://www.sladurko.com/product/277/bluza-kas-rakav.html
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评论（2）
您使用的是 jQuery，因此您需要使用
noConflictyou're using jQuery, so you'll need to use
noConflict既然您已经使用了 jQuery，那么请选择 jQuery 兼容的 lightbox 插件。添加像 Prototype 这样的完整独立库对于一个简单的任务来说是过度的，所以避免它。如果您已经在使用 Prototype，那么出于同样的原因，我建议您避免添加 jQuery。
Since you already use jQuery then choose a jQuery compatible lightbox plugin instead. Adding a whole separate library like Prototype is overkill for a simple task so avoid it. If you were already using Prototype then I would suggest avoid adding jQuery for the same reasons.