Checking for any lowercase letters in a string
- by pcampbell
Consider a JavaScript method that needs to check whether a given string is in all uppercase letters. The input strings are people's names.
The current algorithm is to check for any lowercase letters.
var check1 = "Jack Spratt";
var check2 = "BARBARA FOO-BAR";
var check3 = "JASON D'WIDGET";
var isUpper1 = HasLowercaseCharacters(check1);
var isUpper2 = HasLowercaseCharacters(check2);
var isUpper3 = HasLowercaseCharacters(check3);
function HasLowercaseCharacters(string input)
{
//pattern for finding whether any lowercase alpha characters exist
var allLowercase;
return allLowercase.test(input);
}
Is a regex the best way to go here?
What pattern would you use to determine whether a string has any lower case alpha characters?
