I run performance test through Pindom tools, I got a result saying I need to combine external JavaScript files. I know Magento has a feature to combine all local JavaScript files into one file. But how to combine the external ones?
It's about these files
https://maps.googleapis.com/maps-api-v3/api/js/29/12/common.js
https://maps.googleapis.com/maps-api-v3/api/js/29/12/controls.js
https://maps.googleapis.com/maps-api-v3/api/js/29/12/geocoder.js
https://maps.googleapis.com/maps-api-v3/api/js/29/12/infowindow.js
https://maps.googleapis.com/maps-api-v3/api/js/29/12/map.js
https://maps.googleapis.com/maps-api-v3/api/js/29/12/marker.js
https://maps.googleapis.com/maps-api-v3/api/js/29/12/onion.js
https://maps.googleapis.com/maps-api-v3/api/js/29/12/util.js
https://maps.googleapis.com/maps/api/js/Authent ... htAKU6FT4fAM4&callback=_xdc_._7duho1&token=81040
https://maps.googleapis.com/maps/api/js/Geocode ... htAKU6FT4fAM4&callback=_xdc_._ja54gz&token=80119
https://maps.googleapis.com/maps/api/js/Viewpor ... 0000&7b0&8e0&callback=_xdc_._vi8nk4&token=113027
https://maps.googleapis.com/maps/api/js/Viewpor ... 00000&7b0&8e0&callback=_xdc_._xp4b9k&token=35277
https://maps.googleapis.com/maps/api/js?key=AIzaSyAA1E2Rcxs8vYcJArt1GKhtAKU6FT4fAM4
https://maps.googleapis.com/maps/vt?pb=!1m4!1m3 ... !4e3!12m1!5b1&callback=_xdc_._7rk4vn&token=43082
https://maps.googleapis.com/maps/vt?pb=!1m4!1m3 ... !4e3!12m1!5b1&callback=_xdc_._7z4nki&token=24193