菜鸟求助页面收缩问题

标题1
文字11111111
标题2
文字22222222222
标题3
文字333333333要求实现：
1、默认标题1、2、3都为收拢状态；
2、点击标题1、2、3其中任何一个只有被点的那个张开（如标题1），其他的（标题2、3）为收拢状态，再次点击标题1时，触发标题1收拢。
3、当其中一个展开，点击另外2个中其中一个的时候，之前展开的那个自动收拢。如：标题1展开的状态下，点击标题3时，标题1收拢，标题3展开。要求用JS实现，我搞了半天都不行，麻烦各位大虾帮帮忙！多谢了@！！！！！！

解决方案 »

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