为什么必须在listener属性中的方法名称之前加上“listener”前缀(看起来多余，是不是？)

Why do you have to preface the method name in the listener attribute with "listener" (it seems redundant, doesn't it)?

youdao

在回调函数中我也有些多余地为元素增加了id属性。

In my callback function I also add, somewhat superfluously, id attributes to my elements.

youdao

coupled 属性似乎有点多余，但我们不清楚是否还有更好的办法。

The coupled attribute is probably a hack, but it's not clear whether there's a better approach.

youdao