bind绑定（改变this指向）

constructor(props){
    super(props)
    
    this.state=store.getState()
    this.changeInputValue=this.changeInputValue.bind(this)
    this.storeChange=this.storeChange.bind(this)
    this.clickBtn=this.clickBtn.bind(this)
    store.subscribe(this.storeChange)//订阅
  }

用bind绑定改变this指向，否则会报错（undefine....）祥见错误分类

标签：storeChange,指向,bind,绑定,changeInputValue,clickBtn,props,store
来源： https://www.cnblogs.com/Jarsmine/p/16394540.html