Capitalizing First Letter for each word in string. Localization issue

Question

I am using this function to capitalize first letter of words in the string

function capitalizeFirstLetter(str) {
  return str.replace(/\w\S*/g, function (txt) { 
    return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase(); 
  });
}

It works well for english words but when I try to type my word with non-English first letter, it makes first two letter to uppercase

Input string : "şanlıurfa"
Output string : "ŞAnlıurfa"

I just want to capitalize the first letter.

Thanks.

Answer 1

The regex is what is causing the problem, it isn't selecting the first character if it is a special character, change it to \\S+ and it will work as you need. Here is a jsfiddle with it working