var str = 'afjasoeigjs123sgdh1edhhe456osddhnofd789'; var reg = str.replace(/[^0-9]/ig, "");
var arr2 = []; for (var i = 0; i < reg.length; i++) { if (arr2.indexOf(reg[i]) < 0) { arr2.push(reg[i]) } } console.log(arr2);