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How to call the child method from a parent in React?

by sophia

Unlike regular object-oriented programming, React does not work with objects. Instead, it is based on components and elements. Each component behaves like an object, meant to symbolize a certain attribute of the UI. On the other hand, elements are a bunch of components that perform a group of relatable functions. Therefore, to make your program work, you must include components and elements in sync.  Getting support from experienced React developer team could help your business to develop application smoothly, with high efficiency. 

You can define the components and elements using built-in libraries and packages of React. But the work needs to be defined in each method. The code will have a main function that behaves like the parent method. In this method, you need to write statements for calling the child methods while setting the right conditions per the codes’ requirements. 

Calling a child method from the parent method is one of the main things a developer needs to understand. Keeping this in mind, we have defined the best way in which you can call the child method from the main parent method in React. 

Communication between a child and parent method in React

In general cases, it is the main parent method that renders the child or the sub-component. In this case, you need to define a function named props that will pass the value from a parent to child component. However, in certain cases, you must call the child method from the parent method. 

To do so, you need to send a function called props from the parent method to the child method. It is the child component or method that will call the function. In this below part, we have explained a simple programming snippet to understand. 

import Child from ‘react’;class Parent extends Child.Component {    constructor(props) {        super(props);        this.state = { count: 0 };        this.outputEvent = this.outputEvent.bind(this);    }    outputEvent(event) {        this.setState({ count: this.state.count++ });    }    render() {        const variable = 3;        return (            <div>                Count: { this.state.count }                <Child clickHandler={this.outputEvent} />            </div>        );    }}class Children extends React.Component {    render() {        return (            <button onClick={this.props.clickHandler}>            </button>        );
    }}export default Parent;


The event mentioned in the Child class method is clicking a button. It invokes the method outputEvent in the Parent class. This is why a method from the child is called from the parent class in React. 

One of the major benefits of calling the child method from the parent method is the ability of the codebase to handle more complicated functions within seconds. In addition, as all values passed from the child to the parent are stored in a constant variable, they won’t change throughout the code execution. 


Passing values from the child to the parent or calling the child method from the parent is one of the main functions you must do while creating the React codebase. With this entire functionality, complex events can be handled easily while ensuring no discrepancies are observed. 

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