isAlpha javascript Code Snippet in 2025
stringregexpbeginner
Last Updated: 30 October 2025
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'); // falsejavascript snippet similar to isAlpha For You in November 2025
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