30-seconds-of-code/snippets/js/s/is-alpha.md

title, type, language, tags, cover, dateModified

title	type	language	tags	cover	dateModified
String is alpha	snippet	javascript	string regexp	coffee-phone-tray-3	2020-12-31T14:01:42+02:00

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