Convert string to title case with JavaScript

Question

Is there a simple way to convert a string to title case? E.g. john smith becomes John Smith. I\'m not looking for something complicated like John R

Answer 1

var toMatch = "john w. smith";
var result = toMatch.replace(/(\w)(\w*)/g, function (_, i, r) {
      return i.toUpperCase() + (r != null ? r : "");
    }
)

Seems to work... Tested with the above, "the quick-brown, fox? /jumps/ ^over^ the ¡lazy! dog..." and "C:/program files/some vendor/their 2nd application/a file1.txt".

If you want 2Nd instead of 2nd, you can change to /([a-z])(\w*)/g.

The first form can be simplified as:

function toTitleCase(toTransform) {
  return toTransform.replace(/\b([a-z])/g, function (_, initial) {
      return initial.toUpperCase();
  });
}