Group randomization for a pick, group and rank question

Hello @Ingo ,

For randomly arrange group in PGR question, paste the below in the js(OnReady) of the PGR question:


var that=this.questionId;
function shuffle(array) {
var currentIndex = array.length, temporaryValue, randomIndex;

// While there remain elements to shuffle...
while (0 !== currentIndex) {

// Pick a remaining element...
randomIndex = Math.floor(Math.random() * currentIndex);
currentIndex -= 1;

// And swap it with the current element.
temporaryValue = array[currentIndex];
array[currentIndex] = array[randomIndex];
array[randomIndex] = temporaryValue;
}

return array;
}
var n = jQuery("#"+that+" .Group").length;
var s=[];
for(var i=0;i<n;i++){
s.push(i);
}
s=shuffle(s);
console.log(s);
var c=0;
for(var i=0;i<n;i++){
jQuery("#"+that+" .Group:eq("+s[i]+")").insertAfter("#"+that+" .Group:eq("+c+")");
c++;
}