var tmp = ‘1,6,6,7,7,8,2,3,3,4,4,5‘;
var tmpJson = {};
$.each(tmp.split(‘,‘), function(i, n){
tmpJson[‘a‘+n] = n;
});
var tmpArr = [];
$.each(tmpJson, function(i,n){
tmpArr.push(n)
});
console.log(tmpArr.sort())
原文：http://my.oschina.net/lvkun0223/blog/488520