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website/docs/has().mdx
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Julien Deniau
Doc as mdx instead of export from .d.ts file (#2104)
24 май 2025, 00:47
Не верифицирован
24 май 2025, 00:47
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import Repl from '@/repl/Repl.tsx'; import CodeLink from '@/mdx-components/CodeLink.tsx'; # has() Returns true if the key is defined in the provided collection. <Signature code={`has(collection, key): boolean;`} /> A functional alternative to `collection.has(key)` which will also work with plain Objects and Arrays as an alternative for `collection.hasOwnProperty(key)`. <Repl defaultValue={`has(['dog', 'frog', 'cat'], 2);`} /> <Repl defaultValue={`has(['dog', 'frog', 'cat'], 5);`} /> <Repl defaultValue={`has({ x: 123, y: 456 }, 'x');`} /> <Repl defaultValue={`has({ x: 123, y: 456 }, 'z');`} />