I'm trying to debounce text input field change with Lodash's debounce
function.
import React from "react";
import debounce from 'lodash.debounce';
const Input = () => {
const onChange = debounce((e) => {
const { value } = e.target;
console.log('debounced value', value)
}, 1000)
return (
<input type="text" onChange={ onChange } />
)
};
The code above throws the following errors:
Warning: This synthetic event is reused for performance reasons. If you're seeing this, you're accessing the property target on a released/nullified synthetic event. This is set to null. If you must keep the original synthetic event around, use event.persist().
Uncaught TypeError: Cannot read property 'value' of null
What is the correct implementation?
When to Use Refs There are a few good use cases for refs:
- Managing focus, text selection, or media playback.
- Triggering imperative animations.
- Integrating with third-party DOM libraries.
Avoid using refs for anything that can be done declaratively.
The way you defined Input
, I am assuming it would be used in many places. So, I would do this:
import React from "react";
import debounce from 'lodash.debounce';
const Input = () => {
// Debounced function
// `printValue` only cares about last state of target.value
const printValue = debounce(value => console.log(value), 1000);
// Event listener called on every change
const onChange = ({ target }) => printValue(target.value);
return <input type="text" onChange={ onChange } />;
};