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貌似可以优化 #1

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wsqviva opened this issue Nov 10, 2015 · 0 comments

wsqviva commented Nov 10, 2015

try catch 感觉没必要吧，该报错给他自己报错吧
splice后，可以判断cbs.length删除_listenerMap[type]， undo可能要判断下，有可能被删了
splice可以用spliceOne，效率高点

function spliceOne(list, index) {
  for (var i = index, k = i + 1, n = list.length; k < n; i += 1, k += 1) {
    list[i] = list[k];
  }
  list.pop();
}

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