Camelize string

HTML

<input id="data" type="text" value="write_some_code" />
<button id="ok" >process</button>

JavaScript

var camelize = function(str){
  return str.replace(/[-_\s]+(.)?/g, function(match, c){ return c ? c : ""; });
};

$('#ok').on('click', function(e){
    alert(camelize($('#data').val()))    
});