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useEffect(() => { | |
document.title = name; | |
}, [name]); |
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componentDidUpdate(prevProps, prevState) { | |
if (this.state.name !== prevState.name) | |
this.setState({textColor: getRandomColor()}); | |
} |
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const [name, setName] = useState(“”); |
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import React, {useState, useEffect} from "react"; | |
export function UseEffectFunc() { | |
const [count, setCount] = useState(0); | |
useEffect(() => { | |
const interval = setInterval(() => { | |
setCount(count => count + 1); | |
}, 1000); | |
return () => { |
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import React from "react"; | |
export default class UseEffectClass extends React.Component { | |
constructor() { | |
super(); | |
this.interval = 0; | |
this.state = { | |
count: 0 | |
}; |
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import React, {useState, useEffect} from "react"; | |
export function UseEffectFunc() { | |
const [name, | |
setName] = useState(""); | |
const [textColor, | |
setTextColor] = useState("white"); | |
useEffect(() => { | |
const ColorCode = "rgb(" + (Math.floor(Math.random() * 256)) + "," + (Math.floor(Math.random() * 256)) + "," + (Math.floor(Math.random() * 256)) + ")"; |
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import React, {useState, useEffect} from "react"; | |
export function UseEffectFunc() { | |
const [name, | |
setName] = useState("Maria"); | |
useEffect(() => { | |
document.title = name; | |
}); |
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import React from "react"; | |
export default class UseEffectClass extends React.Component { | |
constructor() { | |
super(); | |
this.state = { | |
name: "Romalia" | |
}; |
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import React, {useState} from "react"; | |
import "../../App.css"; | |
export default function Function() { | |
const [name, setName] = useState(""); | |
const handleChange = (e) => { | |
setName(e.target.value); | |
}; |
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import React from "react"; | |
import "../../App.css"; | |
export class Class extends React.Component { | |
constructor() { | |
super(); | |
this.state = { | |
name: "" | |
}; |