Convert javascript array to string

var value = { 1,2,3,7101,1000,36,7133,7140,7140 };
var blkstr = [];
$.each(value, function(idx2,val2) {                 
  var str = val2;
  blkstr.push(str);
});
console.log(blkstr.join(", "));

var arr = [A, B, C];
var arrString = arr.join(", ");

This results in the following output:

A, B, C