React Js Input field onChange Event
React Js Input field onChange Event:In React.js, the onChange
event is used to handle changes in an input field. When a user interacts with the input field, such as typing or selecting an option, the onChange
event is triggered.
It allows you to capture the updated value of the input field and perform actions accordingly, such as updating the state or executing a function.
By defining an onChange
handler function and attaching it to the input field, you can respond dynamically to user input, enabling real-time updates and interactive behavior in your React.js applications.
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What is the syntax for using the onChange
event in an input field in React.js?
The given code snippet demonstrates the usage of the onChange event in an input field in ReactJS. Initially, a state variable called "inputValue" is declared using the useState hook, with an empty string as its initial value.
The handleInputChange function is defined to update the "inputValue" state whenever the input field value changes. The input field itself is rendered with the value attribute set to "inputValue" and the onChange attribute set to the handleInputChange function.
As a result, whenever the user types or modifies the input field, the handleInputChange function is triggered, updating the "inputValue" state. The current value of the input field is then displayed below it.