Split string with a single occurence (not twice) of a delimiter in Javascript

Question

This is better explained with an example. I want to achieve an split like this:

two-separate-tokens-this--is--just--one--token-another

->

Answer 1

I don't know how to do it purely with the regex engine in JS. You could do it this way that is a little less involved than manually parsing:

var str = "two-separate-tokens-this--is--just--one--token-another";
str = str.replace(/--/g, "#!!#");
var split = str.split(/-/);
for (var i = 0; i < split.length; i++) {
    split[i] = split[i].replace(/#!!#/g, "--");
}

Working demo: http://jsfiddle.net/jfriend00/hAhAB/