2

I have tried this code: 

/[m,r,k]/

I want to check that the string contains all three characters, in this case m,r,k. Order is not important.

Andrew Morton
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snakom23
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    can you provide example input? – depperm Jul 08 '19 at 17:25
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    @anubhava This would not require each individual letter. `mrk` would pass the test but so would `mrr`, `rrr`, and `m`. This does not ensure the string contains all 3 characters. – Corey Ogburn Jul 08 '19 at 17:30
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    Indeed, I misunderstood the question. It is always better to add sample inputs for better clarity. – anubhava Jul 08 '19 at 17:33
  • If you're only using ECMAScript 6-compatible browsers, you could avoid using a regex with something like `var hasAllChars = charsToCheck.split('').every(function(c) { return textToCheck.includes(c) });`. – Andrew Morton Jul 08 '19 at 17:44

1 Answers1

8

You can use 

^(?=.*m)(?=.*r)(?=.*k).*$

enter image description here

let checkStr = (str) => /^(?=.*m)(?=.*r)(?=.*k).*$/i.test(str)

console.log(checkStr('mrk'))
console.log(checkStr('mr'))
Code Maniac
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