Reactjs Call Parent Method

ReactJS is a popular library among web developers for creating interactive user interfaces. One common task developers often encounter is the need for a child component to communicate with its parent component. In this article, we will explore how to call a method defined in a parent component from a child component in ReactJS.

Let's consider a scenario where you have a parent component that contains a method you want to call from a child component. In order to achieve this, the best approach is to pass the method as a prop to the child component. This way, the child component can access and invoke the method from its parent.

First, define the method in the parent component that you want to call from the child component. For example, let's create a method called `handleClick` that we want to call from the child component:

class ParentComponent extends React.Component {
    handleClick = () => {
        console.log("Method called from child component");
    }

    render() {
        return (
            
        );
    }
}

Next, in the child component, access the method passed down as a prop and call it as needed. In this case, we will define a button in the child component that, when clicked, will call the method from the parent component:

class ChildComponent extends React.Component {
    handleButtonClick = () => {
        this.props.handleClick();
    }

    render() {
        return (
            <button>Call Parent Method</button>
        );
    }
}

In the child component, `handleButtonClick` is a method that is triggered when the button is clicked. Within this method, `this.props.handleClick()` calls the method passed down from the parent component.

Finally, when the button in the child component is clicked, the method `handleClick` from the parent component will be invoked, and you will see the console log message "Method called from child component" appear.

By passing methods as props from parent to child components, you can establish communication between them and enable the child component to interact with the parent component's functionality.

In conclusion, calling a method defined in a parent component from a child component in ReactJS involves passing the method as a prop from the parent to the child. By following this approach, you can effectively manage component communication and enhance the interactivity of your ReactJS applications.