早在天下大势还处在分久必合的时候，那时候mootools还有不少简单实用的小库，比如我今天搜索”mootools notification”就找到这个08年的库叫做Roar。不过遗憾的是从那以后，这个库就再也没有更新过了。
Mootools本身也沉寂了很久，这个项目恐怕也要思考自己未来的发展方向了。今年9月Mootools迈进了1.4，API上有一些变化。现在的下载页也能看到with/without backward compatibility的版本分开下载。为了用上Roar，我尝试了这两个版本发现都不能使用。最后downgrade到1.2可以确定Roar本身在当时是没有什么问题。
这么多年对mootools痴心不改，所以顺手维护了一下Roar，现在可以在1.4 without compatibility的发布下运行了。主要是几个小修改，大多是一些多年deprecated函数被正式删除：
- Type常量，原先的String.type，Object.type现在统一到一个Type对象下，变成Type.isString和Type.isObject
- $empty 常量被删除了，现在直接用function()或Function.from()代替
- $pick 方法被Array.pick取代，参数现在也必须接受数组类型了
- $merge 方法被Object.merge取代
- $type 被typeOf取代
- 函数对象的create方法被删除了，现在可以用函数对象的bind方法替代
- Browser.Engine 被删除了，需要用其他Browser的API替代
修改后的Roar，放在这个gist里，测试过可以在firefox和chromium上健康使用。IE没有做测试。这个08年的库，眼看四年过去了，用起来依然不错。
作为mootools的铁杆，我还是会一直专一地坚守下去的。（于是，我也已经变成了多年前那些我眼中为旧事物顽抗到底的老家伙了）
Hi there,
I have tried to reproduce this example:
http://digitarald.de/project/roar/1-0/showcase/ticker/
but got this error:
Object 1 has no method ‘slice’ (mootools line 4747).
The source of the error in the Roar.js is:
item.inject(this.body).morph(to);
in the inject() method.
Any help or feedback would greatly appreciated.
Are you using my modified Roar:
https://gist.github.com/1516568
I’m using it with Mootools 1.4.2 and I think it works fine.
Hi sunng,
Yes I am using the code available in the github link (thanks for this) with mootools 1.4.5 (latest release).
I solved this first problem by commenting this line(69):
unit: ‘px’,
This prevents the js engine from raising an error and makes the script up and running normally (I think the prepare() method of the Fx.CSS class is buggish in the mootools core).
However the opacity (0.7) of the roar-bg div is not taken into account.
To solve this second issue, I have replaced this line (63):
‘opacity’: 0.7
by this one:
‘styles’: {‘opacity’: 0.7}
If you had the time to test it in mootools 1.4.5, I would appreciate to have your fedback.
Thanks again.
Cool. I just tested on 1.4.5 and it requires your patch to work. I have updated my gist to keep it works with latest mootools. Thank you very much for fixing these issues.