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July 12, 2019 11:50
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Code showing how to use Promises or Async/Await for making fetch requests.
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| <!DOCTYPE html> | |
| <html> | |
| <head></head> | |
| <body> | |
| <h1>Hello Promises!</h1> | |
| <script> | |
| async function getLatLongAsync(address) { | |
| try { | |
| // encodeURI(someString) converts the string to URL safe characters | |
| const response = await fetch(`https://nominatim.openstreetmap.org/search/?q=${encodeURI(address)}&format=json`); | |
| const object = await response.json(); | |
| return { lat: object[0].lat, long: object[0].lon }; | |
| } catch (e) { | |
| throw new Error('Something went wrong!'); | |
| } | |
| } | |
| function getLatLongPromise(address) { | |
| // 182 Main St.,Burlington,VT | |
| // encodeURI(someString) converts the string to URL safe characters | |
| const request = fetch(`https://nominatim.openstreetmap.org/search/?q=${encodeURI(address)}&format=json`); | |
| request | |
| .then((response) => response.json()) | |
| .then((object) => { | |
| return { lat: object[0].lat, long: object[0].lon }; | |
| }); | |
| } | |
| </script> | |
| </body> | |
| </html> |
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thanks josh!