我正在尝试开发一个页面，其中有一个可以按下的按钮。按下它时应执行一些功能，但在执行之前，应首先按位置进行验证。因此，每当用户处于默认设置位置（像多边形一样的区域）时，可以按下按钮而不返回错误。当不在该位置或其他错误时，它应该发出警告/错误。
最适合使用哪些插件/库/代码？任何提示如何？
谢谢！
如果您使用的是html5，则可以使用navigator.geolocation.getCurrentPosition来获取位置。
参考：https://www.w3schools.com/html/html5_geolocation.asp
<script>
var x = document.getElementById("demo");
function getLocation() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(showPosition);
} else {
x.innerHTML = "Geolocation is not supported by this browser.";
}
}
function showPosition(position) {
x.innerHTML = "Latitude: " + position.coords.latitude +
"<br>Longitude: " + position.coords.longitude;
}
</script>
找到位置后，您可以使用[Google Maps Geometry Library]，对于Polygon，您可以使用：
参考：https://developers.google.com/maps/documentation/javascript/examples/poly-containsLocation
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<title>Polygon arrays</title>
<style>
/* Always set the map height explicitly to define the size of the div
* element that contains the map. */
#map {
height: 100%;
}
/* Optional: Makes the sample page fill the window. */
html, body {
height: 100%;
margin: 0;
padding: 0;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
// This example requires the Geometry library. Include the libraries=geometry
// parameter when you first load the API. For example:
// <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=geometry">
function initMap() {
var map = new google.maps.Map(document.getElementById('map'), {
center: {lat: 24.886, lng: -70.269},
zoom: 5,
});
var triangleCoords = [
{lat: 25.774, lng: -80.19},
{lat: 18.466, lng: -66.118},
{lat: 32.321, lng: -64.757}
];
var bermudaTriangle = new google.maps.Polygon({paths: triangleCoords});
google.maps.event.addListener(map, 'click', function(e) {
var resultColor =
google.maps.geometry.poly.containsLocation(e.latLng, bermudaTriangle) ?
'blue' :
'red';
var resultPath =
google.maps.geometry.poly.containsLocation(e.latLng, bermudaTriangle) ?
// A triangle.
"m 0 -1 l 1 2 -2 0 z" :
google.maps.SymbolPath.CIRCLE;
new google.maps.Marker({
position: e.latLng,
map: map,
icon: {
path: resultPath,
fillColor: resultColor,
fillOpacity: .2,
strokeColor: 'white',
strokeWeight: .5,
scale: 10
}
});
});
}
</script>
<script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=geometry&callback=initMap"
async defer></script>
</body>
</html>