simple way to generate a random phrase from easy to type sentence

randmytext.js

// An easy way to generate random text from easy to type text
//
// Use "word word [possibility1|possibilities stuff|another stuff thing] stuff" 
//to make a string with possibilities.
// Example:
//
//> var t = "A [greekish|futuristic|antique] world with a [dinossaur|ninja] flying"
//> console.log(randtext(t))
//A antique world with a dinossaur flying
//

function randtext(text) {
    var t = text.split(/[\[\]]+/).filter(function(e) { return e; });
    var sentence = ""
    for (i = 0; i < t.length; i++) {
        if(t[i].indexOf('|') === -1 ){
            sentence += t[i]
        } else {
            var possibles = t[i].split('|')
            sentence += possibles[Math.floor(Math.random()*possibles.length)]          
        }
    }
    return sentence.replace(/ +(?= )/g,'');
}