React UseSeffect, DOM, Mount, Rendering [Duplikat] ⇐ JavaScript

[Anonymous]

Ich lerne gerade React und verstehe nicht, was die obigen Konzepte < /p>
bedeutenuseEffect(function, deps)

useEffect (() => {
console.log('mout')
}, []);

useEffect (() => {
console.log('rendering')
});

useEffect (() =>{
console.log(name);
console.log("update");
}[name]);

useEffect (() => {
console.log('rendering')
return () =>{
console.log("what the");
}
});
useEffect (() => {
console.log('rendering')
return () =>{
console.log("what the");
}
}[]);

useEffect (() => {
console.log('rendering')
return () =>{
console.log("what the");
}
}[name, age
Die fünf obigen Konzepte sind alle unterschiedlich. Es ist also schwer zu verstehen, was los ist.>