how to check whether a string is letter in js code example
Example 1: js is letter
/^[a-z]+$/i.test(nom)Example 2: check if something is a letter in js
string.charAt(1).toUpperCase() !== string.charAt(1).toLowerCase()/^[a-z]+$/i.test(nom)string.charAt(1).toUpperCase() !== string.charAt(1).toLowerCase()