小贝子编程

jquery位置选择器不工作



我对网页设计和编程还很陌生，但我正在尝试使用这个jQuery位置选择器

我使用的是安装了jQuery 3.1.1的ASP.NET 4.6.1 C#。我已经尝试过将最基本的版本与原始.js文件一起使用，但运气不好，甚至无法在JSFiddle上使用它。这可能很简单，但这是JSFiddle上的示例。

<div id="somecomponent" style="width: 500px; height: 400px;"></div>
<script>
$('#somecomponent').locationpicker();
</script>

添加任一

$('#somecomponent').locationpicker();

在JavaScript代码的末尾，或者为JSFiddle中的JavaScript加载类型选择No wrap-in head。

这是因为脚本标记中的$('#somecomponent').locationpicker();是在加载带有locationpicker()函数的JavaScript代码之前调用的。

请参阅此处的工作片段：

/*! jquery-locationpicker - v0.1.15 - 2016-09-26 */
(function($) {
function GMapContext(domElement, options) {
var _map = new google.maps.Map(domElement, options);
var _marker = new google.maps.Marker({
position: new google.maps.LatLng(54.19335, -3.92695),
map: _map,
title: "Drag Me",
visible: options.markerVisible,
draggable: options.markerDraggable,
icon: options.markerIcon !== undefined ? options.markerIcon : undefined
});
return {
map: _map,
marker: _marker,
circle: null,
location: _marker.position,
radius: options.radius,
locationName: options.locationName,
addressComponents: {
formatted_address: null,
addressLine1: null,
addressLine2: null,
streetName: null,
streetNumber: null,
city: null,
district: null,
state: null,
stateOrProvince: null
},
settings: options.settings,
domContainer: domElement,
geodecoder: new google.maps.Geocoder()
};
}
var GmUtility = {
drawCircle: function(gmapContext, center, radius, options) {
if (gmapContext.circle != null) {
gmapContext.circle.setMap(null);
}
if (radius > 0) {
radius *= 1;
options = $.extend({
strokeColor: "#0000FF",
strokeOpacity: .35,
strokeWeight: 2,
fillColor: "#0000FF",
fillOpacity: .2
}, options);
options.map = gmapContext.map;
options.radius = radius;
options.center = center;
gmapContext.circle = new google.maps.Circle(options);
return gmapContext.circle;
}
return null;
},
setPosition: function(gMapContext, location, callback) {
gMapContext.location = location;
gMapContext.marker.setPosition(location);
gMapContext.map.panTo(location);
this.drawCircle(gMapContext, location, gMapContext.radius, {});
if (gMapContext.settings.enableReverseGeocode) {
this.updateLocationName(gMapContext, callback);
} else {
if (callback) {
callback.call(this, gMapContext);
}
}
},
locationFromLatLng: function(lnlg) {
return {
latitude: lnlg.lat(),
longitude: lnlg.lng()
};
},
addressByFormat: function(addresses, format) {
var result = null;
for (var i = addresses.length - 1; i >= 0; i--) {
if (addresses[i].types.indexOf(format) >= 0) {
result = addresses[i];
}
}
return result || addresses[0];
},
updateLocationName: function(gmapContext, callback) {
gmapContext.geodecoder.geocode({
latLng: gmapContext.marker.position
}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK && results.length > 0) {
var address = GmUtility.addressByFormat(results, gmapContext.settings.addressFormat);
gmapContext.locationName = address.formatted_address;
gmapContext.addressComponents = GmUtility.address_component_from_google_geocode(address.address_components);
} else if (status == google.maps.GeocoderStatus.OVER_QUERY_LIMIT) {
return setTimeout(function() {
GmUtility.updateLocationName(gmapContext, callback);
}, 1e3);
}
if (callback) {
callback.call(this, gmapContext);
}
});
},
address_component_from_google_geocode: function(address_components) {
var result = {};
for (var i = address_components.length - 1; i >= 0; i--) {
var component = address_components[i];
if (component.types.indexOf("postal_code") >= 0) {
result.postalCode = component.short_name;
} else if (component.types.indexOf("street_number") >= 0) {
result.streetNumber = component.short_name;
} else if (component.types.indexOf("route") >= 0) {
result.streetName = component.short_name;
} else if (component.types.indexOf("locality") >= 0) {
result.city = component.short_name;
} else if (component.types.indexOf("sublocality") >= 0) {
result.district = component.short_name;
} else if (component.types.indexOf("administrative_area_level_1") >= 0) {
result.stateOrProvince = component.short_name;
} else if (component.types.indexOf("country") >= 0) {
result.country = component.short_name;
}
}
result.addressLine1 = [ result.streetNumber, result.streetName ].join(" ").trim();
result.addressLine2 = "";
return result;
}
};
function isPluginApplied(domObj) {
return getContextForElement(domObj) != undefined;
}
function getContextForElement(domObj) {
return $(domObj).data("locationpicker");
}
function updateInputValues(inputBinding, gmapContext) {
if (!inputBinding) return;
var currentLocation = GmUtility.locationFromLatLng(gmapContext.marker.position);
if (inputBinding.latitudeInput) {
inputBinding.latitudeInput.val(currentLocation.latitude).change();
}
if (inputBinding.longitudeInput) {
inputBinding.longitudeInput.val(currentLocation.longitude).change();
}
if (inputBinding.radiusInput) {
inputBinding.radiusInput.val(gmapContext.radius).change();
}
if (inputBinding.locationNameInput) {
inputBinding.locationNameInput.val(gmapContext.locationName).change();
}
}
function setupInputListenersInput(inputBinding, gmapContext) {
if (inputBinding) {
if (inputBinding.radiusInput) {
inputBinding.radiusInput.on("change", function(e) {
var radiusInputValue = $(this).val();
if (!e.originalEvent || isNaN(radiusInputValue)) {
return;
}
gmapContext.radius = radiusInputValue;
GmUtility.setPosition(gmapContext, gmapContext.location, function(context) {
context.settings.onchanged.apply(gmapContext.domContainer, [ GmUtility.locationFromLatLng(context.location), context.radius, false ]);
});
});
}
if (inputBinding.locationNameInput && gmapContext.settings.enableAutocomplete) {
var blur = false;
gmapContext.autocomplete = new google.maps.places.Autocomplete(inputBinding.locationNameInput.get(0), gmapContext.settings.autocompleteOptions);
google.maps.event.addListener(gmapContext.autocomplete, "place_changed", function() {
blur = false;
var place = gmapContext.autocomplete.getPlace();
if (!place.geometry) {
gmapContext.settings.onlocationnotfound(place.name);
return;
}
GmUtility.setPosition(gmapContext, place.geometry.location, function(context) {
updateInputValues(inputBinding, context);
context.settings.onchanged.apply(gmapContext.domContainer, [ GmUtility.locationFromLatLng(context.location), context.radius, false ]);
});
});
if (gmapContext.settings.enableAutocompleteBlur) {
inputBinding.locationNameInput.on("change", function(e) {
if (!e.originalEvent) {
return;
}
blur = true;
});
inputBinding.locationNameInput.on("blur", function(e) {
if (!e.originalEvent) {
return;
}
setTimeout(function() {
var address = $(inputBinding.locationNameInput).val();
if (address.length > 5 && blur) {
blur = false;
gmapContext.geodecoder.geocode({
address: address
}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK && results && results.length) {
GmUtility.setPosition(gmapContext, results[0].geometry.location, function(context) {
updateInputValues(inputBinding, context);
context.settings.onchanged.apply(gmapContext.domContainer, [ GmUtility.locationFromLatLng(context.location), context.radius, false ]);
});
}
});
}
}, 1e3);
});
}
}
if (inputBinding.latitudeInput) {
inputBinding.latitudeInput.on("change", function(e) {
var latitudeInputValue = $(this).val();
if (!e.originalEvent || isNaN(latitudeInputValue)) {
return;
}
GmUtility.setPosition(gmapContext, new google.maps.LatLng(latitudeInputValue, gmapContext.location.lng()), function(context) {
context.settings.onchanged.apply(gmapContext.domContainer, [ GmUtility.locationFromLatLng(context.location), context.radius, false ]);
updateInputValues(gmapContext.settings.inputBinding, gmapContext);
});
});
}
if (inputBinding.longitudeInput) {
inputBinding.longitudeInput.on("change", function(e) {
var longitudeInputValue = $(this).val();
if (!e.originalEvent || isNaN(longitudeInputValue)) {
return;
}
GmUtility.setPosition(gmapContext, new google.maps.LatLng(gmapContext.location.lat(), longitudeInputValue), function(context) {
context.settings.onchanged.apply(gmapContext.domContainer, [ GmUtility.locationFromLatLng(context.location), context.radius, false ]);
updateInputValues(gmapContext.settings.inputBinding, gmapContext);
});
});
}
}
}
function autosize(gmapContext) {
google.maps.event.trigger(gmapContext.map, "resize");
setTimeout(function() {
gmapContext.map.setCenter(gmapContext.marker.position);
}, 300);
}
function updateMap(gmapContext, $target, options) {
var settings = $.extend({}, $.fn.locationpicker.defaults, options), latNew = settings.location.latitude, lngNew = settings.location.longitude, radiusNew = settings.radius, latOld = gmapContext.settings.location.latitude, lngOld = gmapContext.settings.location.longitude, radiusOld = gmapContext.settings.radius;
if (latNew == latOld && lngNew == lngOld && radiusNew == radiusOld) return;
gmapContext.settings.location.latitude = latNew;
gmapContext.settings.location.longitude = lngNew;
gmapContext.radius = radiusNew;
GmUtility.setPosition(gmapContext, new google.maps.LatLng(gmapContext.settings.location.latitude, gmapContext.settings.location.longitude), function(context) {
setupInputListenersInput(gmapContext.settings.inputBinding, gmapContext);
context.settings.oninitialized($target);
});
}
$.fn.locationpicker = function(options, params) {
if (typeof options == "string") {
var _targetDomElement = this.get(0);
if (!isPluginApplied(_targetDomElement)) return;
var gmapContext = getContextForElement(_targetDomElement);
switch (options) {
case "location":
if (params == undefined) {
var location = GmUtility.locationFromLatLng(gmapContext.location);
location.radius = gmapContext.radius;
location.name = gmapContext.locationName;
return location;
} else {
if (params.radius) {
gmapContext.radius = params.radius;
}
GmUtility.setPosition(gmapContext, new google.maps.LatLng(params.latitude, params.longitude), function(gmapContext) {
updateInputValues(gmapContext.settings.inputBinding, gmapContext);
});
}
break;
case "subscribe":
if (params == undefined) {
return null;
} else {
var event = params.event;
var callback = params.callback;
if (!event || !callback) {
console.error('LocationPicker: Invalid arguments for method "subscribe"');
return null;
}
google.maps.event.addListener(gmapContext.map, event, callback);
}
break;
case "map":
if (params == undefined) {
var locationObj = GmUtility.locationFromLatLng(gmapContext.location);
locationObj.formattedAddress = gmapContext.locationName;
locationObj.addressComponents = gmapContext.addressComponents;
return {
map: gmapContext.map,
marker: gmapContext.marker,
location: locationObj
};
} else {
return null;
}
case "autosize":
autosize(gmapContext);
return this;
}
return null;
}
return this.each(function() {
var $target = $(this);
if (isPluginApplied(this)) {
updateMap(getContextForElement(this), $(this), options);
return;
}
var settings = $.extend({}, $.fn.locationpicker.defaults, options);
var gmapContext = new GMapContext(this, $.extend({}, settings.mapOptions, {
zoom: settings.zoom,
center: new google.maps.LatLng(settings.location.latitude, settings.location.longitude),
mapTypeId: settings.mapTypeId,
mapTypeControl: false,
styles: settings.styles,
disableDoubleClickZoom: false,
scrollwheel: settings.scrollwheel,
streetViewControl: false,
radius: settings.radius,
locationName: settings.locationName,
settings: settings,
autocompleteOptions: settings.autocompleteOptions,
addressFormat: settings.addressFormat,
draggable: settings.draggable,
markerIcon: settings.markerIcon,
markerDraggable: settings.markerDraggable,
markerVisible: settings.markerVisible
}));
$target.data("locationpicker", gmapContext);
function displayMarkerWithSelectedArea() {
GmUtility.setPosition(gmapContext, gmapContext.marker.position, function(context) {
var currentLocation = GmUtility.locationFromLatLng(gmapContext.location);
updateInputValues(gmapContext.settings.inputBinding, gmapContext);
context.settings.onchanged.apply(gmapContext.domContainer, [ currentLocation, context.radius, true ]);
});
}
if (settings.markerInCenter) {
gmapContext.map.addListener("bounds_changed", function() {
if (!gmapContext.marker.dragging) {
gmapContext.marker.setPosition(gmapContext.map.center);
updateInputValues(gmapContext.settings.inputBinding, gmapContext);
}
});
gmapContext.map.addListener("idle", function() {
if (!gmapContext.marker.dragging) {
displayMarkerWithSelectedArea();
}
});
}
google.maps.event.addListener(gmapContext.marker, "drag", function(event) {
updateInputValues(gmapContext.settings.inputBinding, gmapContext);
});
google.maps.event.addListener(gmapContext.marker, "dragend", function(event) {
displayMarkerWithSelectedArea();
});
GmUtility.setPosition(gmapContext, new google.maps.LatLng(settings.location.latitude, settings.location.longitude), function(context) {
updateInputValues(settings.inputBinding, gmapContext);
setupInputListenersInput(settings.inputBinding, gmapContext);
context.settings.oninitialized($target);
});
});
};
$.fn.locationpicker.defaults = {
location: {
latitude: 40.7324319,
longitude: -73.82480777777776
},
locationName: "",
radius: 500,
zoom: 15,
mapTypeId: google.maps.MapTypeId.ROADMAP,
styles: [],
mapOptions: {},
scrollwheel: true,
inputBinding: {
latitudeInput: null,
longitudeInput: null,
radiusInput: null,
locationNameInput: null
},
enableAutocomplete: false,
enableAutocompleteBlur: false,
autocompleteOptions: null,
addressFormat: "postal_code",
enableReverseGeocode: true,
draggable: true,
onchanged: function(currentLocation, radius, isMarkerDropped) {},
onlocationnotfound: function(locationName) {},
oninitialized: function(component) {},
markerIcon: undefined,
markerDraggable: true,
markerVisible: true
};
})(jQuery);
$('#somecomponent').locationpicker();
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maps.google.com/maps/api/js?sensor=false&libraries=places"></script>
<div id="somecomponent" style="width: 500px; height: 400px;"></div>

可能有两个问题。

  1. 您尚未在html文件中添加对locationpicker.jquery.js库的引用
  2. 您必须在map.js中提供地图密钥。因此，从Google Console生成它

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