redux中的bindActionCreators的作用简述

Posted 2020-10-12 酱板鸡

Turns an object whose values are action creators, into an object with the
* same keys, but with every function wrapped into a `dispatch` call so they
* may be invoked directly. This is just a convenience method, as you can call
* `store.dispatch(MyActionCreators.doSomething())` yourself just fine.

以上是一段源码的注释，意思是我们不需要使用dispatch了,，调用bindActionCreators后返回的action就可以了，返回action集合对象中所有action方法都被包了一层dispatch

function bindActionCreator(actionCreator, dispatch) {
  return (...args) => dispatch(actionCreator(...args))
}

　　这里是关键源码，就是帮你包了一层dispatch。一般配合

mapDispatchToProps把action传到props里面，然后直接this.props.someAction(someArgs)就等同于，你dispatch(someAction(someArgs));



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