var str = "1,2,4,5,2,4";
var s = str.split(',');
var dic = {};
for (var i = s.length; i--; ) {
dic[s[i]]=s[i];
}
var r = [];
for (var v in dic) {
r.push(dic[v]);
}
alert(r.join());
var str = "1,2,4,5,2,4";
var s = str.split(',');
var dic = {};
for (var i = s.length; i--; ) {
dic[s[i]]=s[i];
}
var r = [];
for (var v in dic) {
r.push(dic[v]);
}
alert(r.join());