function send(uname, len) { }
function send(uname, len) { var str = new Array(len + 1).join(uname + ","); str = str.slice(0, -1); return str; }
function send(uname, len) { var str = uname; for(i=0; i<len-1; i++) str += ', '+uname; return str; }
function send(uname, len) { var str = new Array(len + 1).join(uname).match(new RegExp(uname,"g")); return str; } alert(send('hello', 5));