onClick事件的调度动作

Question

In react component I have made a function as

 handleClick(event, key, value) {
    event.preventDefault()
    this.setState({
      query:"",
      key:key,
      value:value
    });
    this.props.onClick(this.state);
    console.log("key...." + key   );
    console.log("val...." + value);
  }

this should be called when I am clicking a link

onClick={(e) => this.handleClick(e, {key}, {el}) }

Also using connect I am dispatching action as follows

export const mapDispatchToProps = (dispatch) => ({

  onClick: (query, key, value) => dispatch(onSearch(query,key, value)


  )
});

But on search method key and value are coming as undefined.But in handleClick function I am getting

key....[object Object]
val....[object Object]

Answer 1

key and value will be undefined. You need to call props method on callback of setState because you will not get updated state value just after calling setState.

handleClick(event, key, value) {
        event.preventDefault()
        this.setState({
          query:"",
          key:key,
          value:value
        },()=>{

           this.props.onClick(this.state);
        console.log("key...." + key   );
        console.log("val...." + value);
    });

      }

Answer 2

The way your calling the 'onClick' function is wrong, right now you are only passing one argument and not three.

It should be called like this

this.props.onClick(query, key, value);