String is alpha
JavaScript, String, Regexp · Dec 31, 2020

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