useref react
/*
A common use case is to access a child imperatively:
*/
function TextInputWithFocusButton() {
const inputEl = useRef(null);
const onButtonClick = () => {
// `current` points to the mounted text input element
inputEl.current.focus();
};
return (
<>
<input ref={inputEl} type="text" />
<button onClick={onButtonClick}>Focus the input</button>
</>
);
}
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0
6
import React, { useEffect, useRef } from 'react';
const fooComponent = props => {
const inputBtnRef = useRef(null);
useEffect(() => {
//Add the ref action here
inputBtnRef.current.focus();
});
return (
<div>
<input
type="text"
ref={inputBtnRef}
/>
</div>
);
}
Thank you!
6
0
0
4
9
function TextInputWithFocusButton() {
const inputEl = useRef(null);
const onButtonClick = () => {
// `current` points to the mounted text input element
inputEl.current.focus();
};
return (
<>
<input ref={inputEl} type="text" />
<button onClick={onButtonClick}>Focus the input</button>
</>
);
}
Thank you!
9
4
(9 Votes)
0
0
0
import React, { useRef } from 'react';
function TextInputWithFocusButton() {
const inputEl = useRef(null);
const onButtonClick = () => {
// `current` points to the mounted text input element
inputEl.current.focus();
};
return (
<>
<input ref={inputEl} type="text" />
<button onClick={onButtonClick}>Focus the input</button>
</>
);
}
Thank you!
0
0
0
3.56
9
import React, {useRef, useEffect} from "react";
export default function (props) {
// Initialized a hook to hold the reference to the title div.
const titleRef = useRef();
useEffect(function () {
setTimeout(() => {
titleRef.current.textContent = "Updated Text"
}, 2000); // Update the content of the element after 2seconds
}, []);
return <div className="container">
{/** The reference to the element happens here **/ }
<div className="title" ref={titleRef}>Original title</div>
</div>
}
Thank you!
9
3.56
(9 Votes)
0
5
1
const initialState = {count: 0};
function reducer(state, action) {
switch (action.type) {
case 'increment':
return {count: state.count + 1};
case 'decrement':
return {count: state.count - 1};
default:
throw new Error();
}
}
function Counter() {
const [state, dispatch] = useReducer(reducer, initialState);
return (
<>
Count: {state.count}
<button onClick={() => dispatch({type: 'decrement'})}>-</button>
<button onClick={() => dispatch({type: 'increment'})}>+</button>
</>
);
}
Thank you!
1
5
(1 Votes)
0
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