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46 lines
1.4 KiB
46 lines
1.4 KiB
4 years ago
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## Using Filter
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### Instructions
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- Create a function `filterShortStateName` that takes an array of
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strings and that returns the ones with less than 7 characters.
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> Example: `'Iowa'` only contains 4 characters
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- Create a function `filterStartVowel` that takes an array of strings
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and that returns only the ones that start with a vowel (a,e,i,o,u).
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> Example: `'Alabama'` starts with a vowel
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- Create a function `filter5Vowels` that takes an array of strings
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and that returns only the ones which contain at least 5
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vowels (a,e,i,o,u).
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> Example: `'California'` contains at least 5 vowels
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- Create a function `filter1DistinctVowel` that takes an array of
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strings and that returns only the ones which vowels are of only
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one distinct one (a,e,i,o,u).
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> Example: `'Alabama'` only contains 1 distinct vowels `'a'`.
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- Create a function `multiFilter` that takes an array of
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objects and that returns only the ones which:
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- the key `capital` contains at least 8 characters.
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- the key `name` does not start with a vowel
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- the key `tag` has at least one vowel.
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- the key `region` is not `'South'`
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Example of an array of objects matching the criterias:
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[
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{ tag: 'CA', name: 'California', capital: 'Sacramento', region: 'West' },
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{ tag: 'PA', name: 'Pennsylvania', capital: 'Harrisburg', region: 'Northeast' }
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]
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### Notions
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- https://devdocs.io/javascript/global_objects/array/filter
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