Simple:
LIVE DEMO
Instead of objects, play with "strings"
to set
where needed.
var arr = ['1','2','3','4','5','6','7','8','9','10','11','12','13','14'];
var str = "";
for(var i=0; i"+ arr[i++] +"" ;
if(i%3===0) str += "
" ;
$("#mylist").html( str );