How to create array of coordinates?

I am working on geo location search in nodejs backend. And mongodb is the database. In order to do that, I am getting values from front end. I am using map getbound to get viewport data. Below are some variables that holds latitude and longitude.

var topLeftLong = parseFloat(req.body.topLeftLong); var topLeftLat = parseFloat(req.body.topLeftLat);

var topRightLong = parseFloat(req.body.topRightLong); var topRightLat = parseFloat(req.body.topRightLat);

var bottomRightLong = parseFloat(req.body.bottomRightLong); var bottomRightLat = parseFloat(req.body.bottomRightLat);

var bottomLeftLong = parseFloat(req.body.bottomLeftLong); var bottomLeftLat = parseFloat(req.body.bottomLeftLat);`

Though I am getting these data, I want to put latitude and longitude in an array. But whenever I tried to push data in the array, I get the below error.

via shumana chowdhury