//assuming array look like this.
var arr = [
	["Status", "Name", "Marks", "Position"], 
	["active", Sarfaraz, 10.0, "Front-end-dev"],
	["active", John, 10.0, "Front-end-dev"],
	["deactive", Raganar, 10.0, "UI designer"],
];

console.log (arrToObject(arr));

//create JSON object from 2 dimensional Array
function arrToObject (arr){
	//assuming header
	var keys = arr[0];
	//vacate keys from main array
	var newArr = arr.slice(1, arr.length);

	var formatted = [],
    data = newArr,
    cols = keys,
    l = cols.length;
	for (var i=0; i<data.length; i++) {
			var d = data[i],
					o = {};
			for (var j=0; j<l; j++)
					o[cols[j]] = d[j];
			formatted.push(o);
	}
	return formatted;
}