47 lines
1.1 KiB
Markdown
47 lines
1.1 KiB
Markdown
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# `doesntContain()`
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The `doesntContain` method determines whether the collection does not contain a given item. You may pass a closure to the `doesntContain` method to determine if an element does not exist in the collection matching a given truth test:
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```js
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const collection = collect([1, 2, 3, 4, 5]);
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collection.doesntContain(value => value < 5);
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// false
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```
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```js
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const collection = collect([1, 2, 3]);
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collection.doesntContain(4);
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// true
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```
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You may also use `doesntContain` on object based collections:
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```js
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const collection = collect({
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name: 'Mohamed Salah',
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number: 11,
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});
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collection.doesntContain('Mohamed Salah');
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// false
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collection.doesntContain('Sadio Mané');
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// true
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```
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You may also pass a key / value pair to the contains method, which will determine if the given pair exists in the collection:
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```js
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const collection = collect({
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name: 'Mohamed Salah',
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number: 11,
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});
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collection.doesntContain('name', 'Sadio Mané');
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// true
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```
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[View source on GitHub](https://github.com/ecrmnn/collect.js/blob/master/src/methods/doesntContain.js)
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