How to store value of latitude and longtude on two variables

Question

How to store values of loc[0] and loc[1] on two variables latitude and longtude 

and what type of two variables ?

 

this.partDetailsService.getLocationData(locationArr).subscribe(res => {
                console.log(res);
        res.forEach((item, index) => {
            let dataLocation = res[index]['_source']['GPS1'];
            console.log(dataLocation);
            let loc = dataLocation.split(',');
            console.log("After");
            console.log(loc);    success
            console.log(loc[0].trim());   success
            console.log(loc[1].trim());  success


         });

latitude= result of loc[0].trim after loop finish

longtude= result of loc[1].trim after loop finish

and what datatype assigned to two variables ?