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Angelos Chalaris
2020-09-15 16:28:04 +03:00
parent 040efd4380
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snippets/truthCheckCollection.md
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@ -5,7 +5,7 @@ tags: object,logic,array,intermediate
Checks if the predicate (second argument) is truthy on all elements of a collection (first argument).
Use `Array.prototype.every()` to check if each passed object has the specified property and if it returns a truthy value.
- Use `Array.prototype.every()` to check if each passed object has the specified property and if it returns a truthy value.
```js
const truthCheckCollection = (collection, pre) => collection.every(obj => obj[pre]);
@ -13,4 +13,4 @@ const truthCheckCollection = (collection, pre) => collection.every(obj => obj[pr
```js
truthCheckCollection([{ user: 'Tinky-Winky', sex: 'male' }, { user: 'Dipsy', sex: 'male' }], 'sex'); // true
```
```