parseDynamicForms.js

var rq = {
		"mark_type": [
			"Ear Tag",
			"Ear Tag",
			"Pit Tag"
		],
		"mark_id": [
			"123",
			"567",
			"12348981723"
		],
		"mark_color": [
			"Green",
			"Yelloq",
			"NA"
		],
		"mark_location": [
			"Right Ear",
			"Left Ear",
			"Shoulders"
		],
		"date_given": [
			"2016-10-07",
			"2016-10-07",
			"2016-10-07"
		],
		"mark_removed": [
			"2016-10-28",
			"2016-10-28",
			""
		]
}
var mark = [];
rq.mark_type
// Object.keys(rq).forEach(function(key) {
//     // console.log(key, rq.mark[key]);
//     rq[key].forEach(function(r) {
//         console.log(key + r);
//     });
// });
// console.log(Object.keys(rq).length);
// var n = 0;
// while (n < Object.keys(rq).length - 1) {
//     console.log(Object.keys(rq)[n] + ": " + " " + rq[Object.keys(rq)[n]]);
//     n++;
// }

// console.log(Object.keys(rq)[0] + ": " + rq[Object.keys(rq)[0]][0]);
// var markOne = {"mark_type": null,
//                "mark_id": null
//               };
// markOne[Object.keys(markOne)[0]] = rq[Object.keys(rq)[0]][0];
// markOne;

// var markOne = { "mark_type": rq[Object.keys(rq)[0]][0],
//                 "mark_id": rq[Object.keys(rq)[1]][0]};

// rq[Object.keys(rq)[1]];

// var expected = [
//     {mark_type: "ear tag", mark_id: 123},
//     {mark_type: "pit tag", mark_id: 789}
// ];
// expected
/* working iteration that returns the proper [key: value] structure
   for the object */
// var n = 0;
// while (n < rq[Object.keys(rq)[0]].length) {
//     var m = 0;
//     while (m < Object.keys(rq).length) {
//         // console.log(n + ": " + m);
//         console.log(Object.keys(rq)[m] + ": " + rq[Object.keys(rq)[m]][n])
//         m++;
//     }
//     // console.log(rq[Object.keys(rq)[0]][n]);
//     n++;
// }

function parseDynamicContent(rq) {
    var n = 0;
    var dat = [];
    while (n < rq[Object.keys(rq)[0]].length) {
        var m = 0;
        var obj = {};
        while (m < Object.keys(rq).length) {
            var val = rq[Object.keys(rq)[m]][n];
            if (val == '') {
                val = null
            }
            obj[Object.keys(rq)[m]] = val
            m++;
        }
        dat.push(obj)
        n++;
    }
    return dat;
}
console.log(JSON.stringify(parseDynamicContent(rq), null, '\t'));
// Object.keys(rq); // Object keys (field names for sequelize)