var s = "javascript, php: python. c++ ..c ,c# java"
var separators = [' ', ',', ':', '\\\.'];
var words = s.split(new RegExp(separators.join('|'), 'g'));
for (var i = 0; i < words.length; i++)
document.write(words[i] + "<br />");
/*
run:
javascript
php
python
c++
c
c#
java
*/