how to loop adding data the same information as before

const ObjectData =[
    { "foo": "baz", "y": "13" },
    { "foo": "baz", "y": "14" },
    { "foo": "baz", "y": "15" },
    { "foo": "baz", "y": "16" },
    { "foo": "baz", "y": "17" }
    ];
  var list = "";
  for (i = 0; i <= ObjectData.length; i++){
     list += ObjectData[i];
  }

how to loop adding data the same information as before
same information as before