Adding empty data to json array


I am trying to add data to jsonarray but after adding object it’s adding empty data which I don’t want to add. How I can do that.

var id = pm.environment.get(‘id’);
var jsonArr = [{}];

for (let i = 1; i < 8; i++) {
var currentDate = moment().subtract(i, ‘day’);
var dt = currentDate.format(“YYYY-MM-DD”)
jsonArr.push({“id”:id,“start_date”:dt,“score”: ${_.random(0, 100)},“has_valid_frac_valid”: false,“has_valid_baseline”: false});


Thanks in Advance.