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google_maps.html
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<!doctype html>
<html lang="en">
<head>
<title>Map Markers & Geocode Example - Google Maps</title>
<meta charset="utf-8"/>
<link rel="stylesheet" href="css/bootstrap.min.css"/>
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"/>
<style>.github-corner{top: 0;right: 0}.github-corner:hover .octo-arm{animation: octocat-wave 560ms ease-in-out}@keyframes octocat-wave{0%{transform: rotate(0deg)}20%{transform: rotate(-25deg)}40%{transform: rotate(10deg)}60%{transform: rotate(-25deg)}80%{transform: rotate(10deg)}100%{transform: rotate(0deg)}}@media (max-width: 500px){.github-corner:hover .octo-arm{animation: none}.github-corner .octo-arm{animation: octocat-wave 560ms ease-in-out}.github-link{font-size:0.8rem}}</style>
</head>
<body>
<a target="_blank" href="https://github.com/szczyglis-dev/map-markers-geocode" class="github-corner"
aria-label="View GitHub page">
<svg width="80" height="80" viewBox="0 0 250 250"
style="fill:#151513; color:#fff; position: absolute; top: 0; border: 0; right: 0;" aria-hidden="true">
<path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path>
<path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2"
fill="currentColor" style="transform-origin: 130px 106px;" class="octo-arm"></path>
<path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z"
fill="currentColor" class="octo-body"></path>
</svg>
</a>
<div class="container p-2 mt-4">
<h1>Map Markers & Geocode Example - Google Maps</h1>
<b>Code example that shows map marker placement and coordinate search with geocoding using Google Maps engine</b><br/>
<b class="text-danger">Tip: don't forget to put your google maps API key in script at the bottom of HTML code!</b>
<form name="form" id="form">
<div class="form-row mt-3">
<div class="form-group col-md-8">
<input name="search_query" type="text" id="query"
placeholder="Type location to search, eg. Chicago, USA" class="form-control"/>
</div>
<div class="form-group col-md-4">
<button type="submit" id="search" class="btn btn-primary">Search</button>
</div>
</div>
<div class="form-row">
<div class="form-group col-md-6">
<label for="lat">Latitude</label>
<input type="text" name="lat" id="lat" placeholder="Latitude" class="form-control" value="40.7127753"/>
</div>
<div class="form-group col-md-6">
<label for="lng">Longitude</label>
<input type="text" name="lng" id="lng" placeholder="Longitude" class="form-control"
value="-74.0059728"/>
</div>
</div>
</form>
<div id="map" style="width:100%;height:500px"></div>
<div class="my-5 text-center">
<b>Also check:</b> <a href="open_street_map.html">Open Street Map Example</a>
</div>
<div class="text-center mt-4 text-muted">
<small>
© 2022 | MIT License | Example code by Marcin "szczyglis" Szczyglinski<br/>
<a href="https://github.com/szczyglis-dev/map-markers-geocode" target="_blank">https://github.com/szczyglis-dev/map-markers-geocode</a>
| <a href="https://szczyglis.dev" target="_blank">https://szczyglis.dev</a>
</small>
</div>
<script src="js/jquery.min.js"></script>
<script src="js/bootstrap.bundle.min.js"></script>
<script>
let map,
marker,
geocoder;
// Initializes google map
function initMap() {
console.log('Initializing map..');
// Initialize google geocoder
geocoder = new google.maps.Geocoder();
// Define map initial parameters
const myLatlng = new google.maps.LatLng(40.7127753, -74.0059728); // New York
const mapOptions = {
zoom: 6,
center: myLatlng,
mapTypeId: 'hybrid'
}
// Create map in "map" div
map = new google.maps.Map(document.getElementById('map'), mapOptions);
// Create marker
marker = new google.maps.Marker({
position: myLatlng,
map: map,
draggable: true,
title: "Drag marker"
});
// Add dragend listener to marker
marker.addListener("dragend", () => {
const pos = marker.getPosition();
const lat = pos.lat();
const lng = pos.lng();
$('input[name="lat"]').val(lat);
$('input[name="lng"]').val(lng);
console.log('On marker drag end', lat, lng);
});
// Add click listener to map
google.maps.event.addListener(map, 'click', function (event) {
marker.setPosition(event.latLng);
$('input[name="lat"]').val(event.latLng.lat());
$('input[name="lng"]').val(event.latLng.lng());
console.log('On map click', event.latLng.lat(), event.latLng.lng());
});
}
// Executes geocode search
function geocode(request) {
geocoder
.geocode(request)
.then((result) => {
const {results} = result;
map.setCenter(results[0].geometry.location);
map.setZoom(10);
marker.setPosition(results[0].geometry.location);
$('input[name="lat"]').val(results[0].geometry.location.lat);
$('input[name="lng"]').val(results[0].geometry.location.lng);
console.log('Geocode result', results);
return results;
})
.catch((e) => {
alert("Geocode error: " + e);
});
};
// Updates marker position on map
function updateMarker() {
const lat = $('input[name="lat"]').val().trim();
const lng = $('input[name="lng"]').val().trim();
if (lat.length != 0 && lng.length != 0) {
const latlng = new google.maps.LatLng(lat, lng);
marker.setPosition(latlng);
//map.setCenter(latlng); // < --- uncomment if you want to center map in this place
console.log('Update marker position', lat, lng);
}
};
$(document).ready(function () {
// Refresh marker position when manual latitude update
$('body').on('change', 'input[name="lat"]', function (e) {
updateMarker();
});
// Refresh marker position when manual longitude update
$('body').on('change', 'input[name="lng"]', function (e) {
updateMarker();
});
// Run geocode search on form submit
$('body').on('submit', 'form[name="form"]', function (e) {
e.preventDefault();
const query = $('input[name="search_query"]').val();
if (query != '') {
geocode({address: query});
}
});
});
</script>
</div>
<script src="https://maps.googleapis.com/maps/api/js?key={YOUR_API_KEY}&callback=initMap&v=weekly" async></script>
</body>
</html>