When do you have a situation where you manually set

Learn primitive types vs reference types conditionals, guard clauses loops functions, passing functions to functions, returning functions from functions, arrow functions, iife array methods prototype chain event loop Destructing, spread Dom manipulation Promises, async await Make something small with it then you should be ready for a framework

0

22.06.2022

Masoud · Accepted Answer

My problem is that I'm not doing that :)) let history = [] const [shapes, setShapes] = useState([]) const handleUndo = useCallback(() => { if (!history.length) return history.pop() let isFound = false for (let i = shapes.length - 1; i >= 0; i--) { if (!history[history.length - 1]) return if (shapes[i].id === history[history.length - 1].id) { isFound = true shapes[i] = history[history.length - 1] break } } if (!isFound) { shapes.pop() } setShapes(shapes) }, [shapes])

Похожие чаты

When do you have a situation where you manually set

7 ответов

Похожие вопросы