Convert string to Pascal Case (aka UpperCamelCase) in Javascript

by 
s = s.replace(/(\w)(\w*)/g,
        function(g0,g1,g2){return g1.toUpperCase() + g2.toLowerCase();});

The regex finds words (here defined using \w – alphanumerics and underscores), and separates them to two groups – first letter and rest of the word. It then uses a function as a callback to set the proper case.

Example: http://jsbin.com/uvase

Alternately, this will also work – a little less regex and more string manipulation:

s = s.replace(/\w+/g,
        function(w){return w[0].toUpperCase() + w.slice(1).toLowerCase();});

I should add this isn’t pascal case at all, since you have word barriers (helloworld vs hello-world). Without them, the problem is almost unsolvable, even with a dictionary. This is more commonly called Title Case, though it doesn’t handle words like “FBI”, “the” or “McDonalds”.

More Related Contents:

  1. Regex – To allow numeric, only characters R, N, X, B, @ [closed]
  2. Find particular string from URL in JavaScript
  3. Negative lookbehind equivalent in JavaScript
  4. JavaScript regex multiline text between two tags
  5. Case insensitive regex in JavaScript
  6. Remove not alphanumeric characters from string
  7. I want to remove double quotes from a String
  8. Count number of matches of a regex in Javascript
  9. Password REGEX with min 6 chars, at least one letter and one number and may contain special characters
  10. Regex created via new RegExp(myString) not working (backslashes)
  11. Replace a Regex capture group with uppercase in Javascript
  12. How to write regex to validate dates?
  13. Replacing   from javascript dom text node
  14. Can I use a case/switch statement with two variables?
  15. Javascript Regex to replace text NOT in html attributes [duplicate]
  16. Replacing the nth instance of a regex match in Javascript
  17. How to extract a string using JavaScript Regex?
  18. JavaScript Regex Global Match Groups
  19. How can I put [] (square brackets) in RegExp javascript?
  20. Interesting test of Javascript RegExp [duplicate]
  21. Javascript Regex to match only a single occurrence no more or less
  22. All characters in a string must match regex
  23. RegEx to match stuff between parentheses
  24. Regex eError when using {1}+ possessive quantifier in JavaScript regex
  25. Check if string contains only letters in javascript
  26. regular expression to validate datetime format (MM/DD/YYYY) [duplicate]
  27. What’s different between Python and Javascript regular expressions?
  28. Extract keyword from Google search in Javascript
  29. Regex matching emoticons
  30. Regex: only alphanumeric but not if this is pure numeric

Leave a Comment