24 lines
687 B
Markdown
24 lines
687 B
Markdown
---
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title: Assert object keys are valid
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tags: object
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expertise: intermediate
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author: chalarangelo
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cover: blog_images/river-flow.jpg
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firstSeen: 2021-07-18T05:00:00-04:00
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---
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Validates all keys in an object match the given `keys`.
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- Use `Object.keys()` to get the keys of the given object, `obj`.
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- Use `Array.prototype.every()` and `Array.prototype.includes()` to validate that each key in the object is specified in the `keys` array.
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```js
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const assertValidKeys = (obj, keys) =>
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Object.keys(obj).every(key => keys.includes(key));
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```
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```js
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assertValidKeys({ id: 10, name: 'apple' }, ['id', 'name']); // true
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assertValidKeys({ id: 10, name: 'apple' }, ['id', 'type']); // false
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```
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