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# 函数事件流函数
```js
function(event, op) {
//
}
```
## 参数说明
* event：事件，既函数上下文。具体请参见 [FunctionEvent](./FunctionEvent.md)
* op：封装的一系列工具方法。具体请参见 [op 文档](../op/README.md)