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