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isAlpha javascript Code Snippet in 2024

stringregexpbeginner

Last Updated: 13 May 2024

Checks if a string contains only alpha characters.

  • Use RegExp.prototype.test() to check if the given string matches against the alphabetic regexp pattern.
const isAlpha = str => /^[a-zA-Z]*$/.test(str);
isAlpha('sampleInput'); // true isAlpha('this Will fail'); // false isAlpha('123'); // false

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