Getting information from database and giving it to javascript

The main thing I want to achieve is that my module makes a google map with markers. For now im doing this: drupal_add_js('https://maps.googleapis.com/maps/api/js?key=AIzaSyDcl28Qcn9GTi02rRtQaLgVS4GWZbGcQ8E', 'external'); $locations = db_query('SELECT * FROM {locations}')->execute(); $script = '<script> function initialize() { var mapOptions = { center: { lat: 56.9714744, lng: 24.1291624}, zoom: 9