Question

54

Check if all elements in array are strings

rated 0 times [ 56] [ 2] / answers: 1 / hits: 26840 / 10 Years ago, tue, november 11, 2014, 12:00:00

Is there a good way to check if all indexes in an array are strings?

check([asd, 123]); // false

check([asd, dsa, qwe]); // true

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mireyag

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answered 10 Years ago brookelynshaem · Accepted Answer

You can use Array.every to check if all elements are strings.

const isStringsArray = arr => arr.every(i => typeof i === string)



console.log( 

  isStringsArray(['a','b','c']),

  isStringsArray(['a','','c']),

  isStringsArray(['a', ,'c']),

  isStringsArray(['a', undefined,'c']),

  isStringsArray(['a','b',1]) 

)