Nested Function Returns Unexpected Result - reactjs

Question

I have a menu component in my header component. The header component passes a function to the menu component => default menu component. It's working but the function returns unwanted data.
the path my function is traveling through is:
homepage => header => menu => defaultMenu
The function is:
changeBodyHandler = (newBody) => {
console.log(newBody)
this.setState({
body: newBody
})
}
I pass the function from homepage => header like this:
<HeaderDiv headerMenuClick={() => this.changeBodyHandler}/>
then through header => menu => defaultMenu using:
<Menu MenuClick={this.props.headerMenuClick} />
//==================== COMPONENT CODES ==========================//
homepage:
class Homepage extends Component {
constructor(props){
super(props);
this.state = {
body: "Homepage"
}
this.changeBodyHandler = this.changeBodyHandler.bind(this)
}
changeBodyHandler = (newBody) => {
console.log(newBody)
this.setState({
body: newBody
})
}
render() {
return (
<div>
<HeaderDiv headerMenuClick={() => this.changeBodyHandler}/>
{ this.state.body === "Homepage" ?
<HomepageBody />
: (<div> </div>)}
</div>
);
}
}
header:
class HeaderDiv extends Component {
constructor(props) {
super(props);
this.state = {
showMenu: 'Default',
}
}
render(){
return (
<Menu MenuClick={this.props.headerMenuClick}/>
);
}
}
menu:
import React, { Component } from 'react';
import DefaultMenu from './SubCompMenu/DefaultMenu';
import LoginCom from './SubCompMenu/LoginCom';
import SingupCom from './SubCompMenu/SingupCom';
class Menu extends Component {
//==================================================================
constructor(props){
super(props);
this.state = {
show: this.props.shows
};
this.getBackCancelLoginForm = this.getBackCancelLoginForm.bind(this);
}
//===============================================================
//getBackCancelLoginForm use to hindle click event singin & singup childs
//===============================================================
getBackCancelLoginForm(e){
console.log("Hi")
this.setState({
show : "Default"
})
}
//=================================================================
// getDerivedStateFromProps changes state show when props.shows changes
//===============================================================
componentWillReceiveProps(nextProps) {
if(this.props.show != this.nextProps){
this.setState({ show: nextProps.shows });
}
}
//======================================================================
render() {
return (
<div>
{ this.state.show === "Singin" ?
<LoginCom
cencelLogin={this.getBackCancelLoginForm.bind(this)}
/>
: (<div> </div>)}
{ this.state.show === "Singup" ?
<SingupCom
cencelLogin={this.getBackCancelLoginForm.bind(this)}
/>
: (<div> </div>)}
{ this.state.show === "Default" ?
<DefaultMenu MenuClicks={this.props.MenuClick}/> : (<div> </div>)}
</div>
);
}
}
Default menu:
class DefaultMenu extends Component {
render() {
return (
<div className="box11" onClick={this.props.MenuClicks("Homepage")}>
<h3 className="boxh3" onClick={this.props.MenuClicks("Homepage")}>HOME</h3>
);
}
}
//================ Describe expected and actual results. ================//
I'm expecting the string "Homepage" to be assigned to my state "body"
but console.log shows:
Class {dispatchConfig: {…}, _targetInst: FiberNode, nativeEvent: MouseEvent, type: "click", target: div.box11, …}
instead of "Homepage"

Answer 1

Use arrow functions in onClick listener, in above question Change DefaultMenu as:
class DefualtMenu extends Component {
render() {
return (
<div className="box11" onClick={() => this.props.MenuClicks("Homepage")}>
<h3 className="boxh3">HOME</h3>
</div>
);
} }
For arrow functions learn from mozilla Arrow Functions
I hope this helps.