18 lines
662 B
Markdown
18 lines
662 B
Markdown
### matches
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Compares two objects to determine if the first one contains equivalent property values to the second one.
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Use `Object.keys(source)` to get all the keys of the second object, then `Array.every()`, `Object.hasOwnProperty()` and strict comparison to determine if all keys exist in the first object and have the same values.
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```js
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const matches = (obj, source) =>
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Object.keys(source).every(
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key => obj.hasOwnProperty(key) && obj[key] === source[key]
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);
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```
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```js
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matches({ age: 25, hair: 'long', beard: true }, { hair: 'long', beard: true }) // true
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matches({ hair: 'long', beard: true }, { age: 25, hair: 'long', beard: true }) // false
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```
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