"hooks" Code Answer's
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hooks in react
Unsightly Unicorn
on May 26, 2020
import React, { useState, useEffect } from "react";
export default props => {
console.log("componentWillMount");
console.log("componentWillReceiveProps", props);
const [x, setX] = useState(0);
const [y, setY] = useState(0);
const [moveCount, setMoveCount] = useState(0);
const [cross, setCross] = useState(0);
const mouseMoveHandler = event => {
setX(event.clientX);
setY(event.clientY);
};
useEffect(() => {
console.log("componentDidMount");
document.addEventListener("mousemove", mouseMoveHandler);
return () => {
console.log("componentWillUnmount");
document.removeEventListener("mousemove", mouseMoveHandler);
};
}, []); // empty-array means don't watch for any updates
useEffect(
() => {
// if (componentDidUpdate & (x or y changed))
setMoveCount(moveCount + 1);
},
[x, y]
);
useEffect(() => {
// if componentDidUpdate or componentDidMount
if (x === y) {
setCross(x);
}
});
return (
<div>
<p style={{ color: props.color }}>
Your mouse is at {x}, {y} position.
</p>
<p>Your mouse has moved {moveCount} times</p>
<p>
X and Y positions were last equal at {cross}, {cross}
</p>
</div>
);
};react hooks
Homeless Hornet
on Jun 11, 2020
const [state, setState] = useState(initialState);Source: reactjs.org
components react to hooks
Pleasant Panda
on May 20, 2020
import React, { useState } from 'react';
function Example() {
// Declare a new state variable, which we'll call "count" const [count, setCount] = useState(0);
return (
<div>
<p>You clicked {count} times</p>
<button onClick={() => setCount(count + 1)}>
Click me
</button>
</div>
);
}Source: reactjs.org
hooks
Concerned Chinchilla
on Mar 23, 2021
import React, { useState } from 'react';
function Example() {
// Declare a new state variable, which we'll call "count" const [count, setCount] = useState(0);
return (
<div>
<p>You clicked {count} times</p>
<button onClick={() => setCount(count + 1)}>
Click me
</button>
</div>
);
}Source: reactjs.org
All those coders who are working on the Javascript based application and are stuck on hooks can get a collection of related answers to their query. Programmers need to enter their query on hooks related to Javascript code and they'll get their ambiguities clear immediately. On our webpage, there are tutorials about hooks for the programmers working on Javascript code while coding their module. Coders are also allowed to rectify already present answers of hooks while working on the Javascript language code. Developers can add up suggestions if they deem fit any other answer relating to "hooks". Visit this developer's friendly online web community, CodeProZone, and get your queries like hooks resolved professionally and stay updated to the latest Javascript updates.
