Data Science
What is event in React
An action triggered as a result of the user action or system-generated event is termed as an event. The React event handling system, also known as Synthetic Events is a cross-browser wrapper of the browser’s native event and is much like handling events on DOM elements but have some syntactic differences.
- The events in ReactJS use naming as camelCase instead of lowercase.
- A function in ReactJS is passed as the event handler with the use of JSX, instead of passing it as a string.
- To prevent the default behaviour, the preventDefault event must be called explicitly in ReactJS instead of returning false.
Example:
import React, { Component } from 'react';
class App extends React.Component {
constructor(props) {
super(props);
this.state = {
StudName: ''
};
}
changeText(event) {
this.setState({
StudName: event.target.value
});
}
render() {
return (
EventStudent name:Entered name: { this.state.StudName } |
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