The other day I had posted on capitalizing the first letter of a string in Javascript. But what if you wanted to capitalize the first letter of every word? With PHP it’s just a simple call to ucwords and just as easy in Ruby and Python.

To be able to pull this off we will need to leverage the power of regular expressions to :

var lower = 'this is an entirely lowercase string';
var upper = lower.replace(/\w\S*/g, function (word) {
  return word.charAt(0).toUpperCase() + word.substr(1).toLowerCase();

There is a slight assumption that you want to force the rest of the string to be lowercased in the example. If you would prefer to retain the existing case, just omit the final .toLowerCase().

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