Javascript Convert 2d Array into JSON Object

//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;
}

That was quite minified, which could be confusing.
We can re-write it to be more readable. And put it into a function similar to the OP.

function convertTableToJSON(table) {
    // extract header as keys
    let keys = table.shift();
    // create JSON objects from the remaining data 
    let json = table.map(row => {
        let obj = {};
        // add each element of the row to the object with the corresponding key
        row.forEach((value, index) => {
            obj[keys[index]] = value;
        });
        return obj;
    });
    return json;
}

And the concise version would be:

function convertTableToJSON(table) {
    let keys = table.shift();
    let json = table.map(row => Object.assign({}, ...row.map((v, i) => ({ [keys[i]]: v }))));
    return json
}