typescript keyof
interface Person {
name: string;
age: number;
location: string;
}
type K1 = keyof Person; // "name" | "age" | "location"
type K2 = keyof Person[]; // "length" | "push" | "pop" | "concat" | ...
type K3 = keyof { [x: string]: Person }; // stringtypescript keyof object
type staffKeys = 'name' | 'salary';
function getProperty<T, K extends staffKeys>(obj: T, key: K): T[K] {
return obj[key];
}Copyright © 2021 Codeinu
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