顺便说一下，我不是JavaScript专家，但最近基于Google Maps做了很多事情的时候感觉自己会成为一个。
我实现了一个地图。用户可以搜索Google Places并为其放置标记。文本框就在那里。或者用户可以单击地图将标记放置到他正在寻找的地方，或者拖动标记。
代码保持不变。设计改变了。输入字段的ID和名称也相同。JS代码没有改变。但是这个东西不起作用。
这是网站
Google地图产生了错误。
InvalidValueError: not an instance of HTMLInputElement
可能的原因是什么？
以下是代码：
var map;
var marker;
var latLngC;
function initialize()
{
latLngC = new google.maps.LatLng(14.5800, 121.0000);
var mapOptions = {
center: latLngC,
zoom: 12,
mapTypeId: google.maps.MapTypeId.ROADMAP,
};
map = new google.maps.Map(document.getElementById('source_map'),
mapOptions);
var marker = new google.maps.Marker({
position: latLngC,
map: map,
draggable: true
});
google.maps.event.addListener(marker, 'dragend', function (x)
{
document.getElementById('src_lat').value = x.latLng.lat();
document.getElementById('src_long').value = x.latLng.lng();
document.getElementById('pickup_location').innerHTML = x.latLng.lat()+' , '+x.latLng.lng();
var geocoder = new google.maps.Geocoder;
var infowindow = new google.maps.InfoWindow;
geocodeLatLng(geocoder, map, infowindow,x.latLng.lat(),x.latLng.lng(),'source_point');
});
//Get coordinates,address Upon clicking a location in map (Source Map)
//By Sajeev
google.maps.event.addListener(map, 'click', function(x)
{
document.getElementById('src_lat').value = x.latLng.lat();
document.getElementById('src_long').value = x.latLng.lng();
document.getElementById('pickup_location').innerHTML = x.latLng.lat()+' , '+x.latLng.lng();
var geocoder = new google.maps.Geocoder;
var infowindow = new google.maps.InfoWindow;
geocodeLatLng(geocoder, map, infowindow,x.latLng.lat(),x.latLng.lng(),'source_point');
});
//Add marker upon clicking on map
//google.maps.event.addDomListener(map, 'click', addMarker);
google.maps.event.addDomListener(map, 'click', function() { addMarker(map); });
var places1 = new google.maps.places.Autocomplete(document.getElementById('source_point'));
google.maps.event.addListener(places1, 'place_changed', function () {
var place1 = places1.getPlace();
var src_addr = place1.formatted_address;
var src_lat = place1.geometry.location.lat();
var src_long = place1.geometry.location.lng();
var mesg1 = "Address: " + src_addr;
mesg1 += "\nLatitude: " + src_lat;
mesg1 += "\nLongitude: " + src_long;
//alert(mesg1);
document.getElementById('src_lat').value = src_lat;
document.getElementById('src_long').value = src_long;
document.getElementById('pickup_location').innerHTML = src_lat+' , '+src_long;
});
//Add marker upon place change
//google.maps.event.addDomListener(places1, 'place_changed', addMarker);
google.maps.event.addDomListener(places1, 'place_changed', function() { addMarker(map); });
}
google.maps.event.addDomListener(window,'resize',initialize);
google.maps.event.addDomListener(window, 'load', initialize);
我的HTML代码看起来像这样：
<form role="form" id="frm_source" name="frm_source" method="POST" action="index_action.php">
<div class="form-group">
<label for="source_point"><h2>Pickup Address</h2></label>
<textarea type="text" id="source_point" name="source_point" class="form-control" placeholder="Enter your pick up address here"></textarea>
</div>
<div class="form-group">
<label for="pickup_location"><h3>GPS Cordinates</h3></label>
<hr>
<p id="pickup_location"></p>
</div>
<div class="form-group">
<input type="hidden" id="src_lat" name="src_lat" placeholder="latitude" >
<input type="hidden" id="src_long" name="src_long" placeholder="longitude" >
</div>
<input type="submit" name="submit" id="submit" class="btn btn-primary" value="Next to enter destination address" />
</form>
谷歌地图
<div id="source_map"></div>