Https Developers Google Com Maps Documentation Javascript Get Api Key. To manage your cost of use of the Google Maps Platform APIs you can set daily quota limits on all requests to any billable API. First of all Maps JavaScript API v3 has another key system.
Go to the Credentials page. This is the same case when searching for venue names in the Search field. Click the APIs drop-down and select the Maps JavaScript API.
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On the Credentials page click Create credentials API key. Customers with the Premium Plan can use an API key or a client ID to authenticate requests. In the following example replace YOUR_API_KEY with your API key. Google Places API Web Service Google Maps Geocoding API.