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calculate_distance_between_latlongs.html
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| <!doctype html> | |
| <html lang="en"> | |
| <head> | |
| <title>Using the scripts in web pages</title> | |
| <meta charset="utf-8"> | |
| <script type="module"> | |
| import LatLon from 'https://cdn.jsdelivr.net/npm/geodesy@2/latlon-spherical.min.js'; | |
| document.addEventListener('DOMContentLoaded', function() { | |
| document.querySelector('#calc-dist').onclick = function() { | |
| calculateDistance(); | |
| } | |
| }); | |
| function calculateDistance() { | |
| const p1 = LatLon.parse(document.querySelector('#point1').value); | |
| const p2 = LatLon.parse(document.querySelector('#point2').value); | |
| const dist = parseFloat(p1.distanceTo(p2).toPrecision(4)); | |
| document.querySelector('#result-distance').textContent = dist + ' metres'; | |
| } | |
| </script> | |
| </head> | |
| <body> | |
| <form> | |
| Point 1: <input type="text" name="point1" id="point1" placeholder="lat1,lon1"> | |
| Point 2: <input type="text" name="point2" id="point2" placeholder="lat2,lon2"> | |
| <button type="button" id="calc-dist">Calculate distance</button> | |
| <output id="result-distance"></output> | |
| </form> | |
| </body> | |
| </html> |
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