[英]Use Google Maps marker coordinates as form input
From the below javascript function, I get a javascript variable marker with coordinates when the user clicks a position on the map. 从下面的javascript函数中,当用户单击地图上的某个位置时,我得到了一个带有坐标的javascript变量标记 。
var marker;
function placeMarker(location) {
if ( marker ) {
marker.setPosition(location);
} else {
marker = new google.maps.Marker({
position: location,
map: map
});
}
}
google.maps.event.addListener(map, 'click', function(event) {
placeMarker(event.latLng);
});
Question How can these coordinates be used as form input? 问题如何将这些坐标用作表单输入?
<form method="POST" action="/authors" target="" enctype="multipart/form-data">
...
</form>
All you have to do is take the location
variable and assign it to your form input like this: 您所需要做的就是获取
location
变量,并将其分配给表单输入,如下所示:
First, add a hidden input field 首先,添加一个隐藏的输入字段
<form method="POST" action="/authors" target="" enctype="multipart/form-data">
<input id="location" name="location" type="hidden" value="" />
</form>
Second, make sure the location variable gets added to your input 其次,确保将位置变量添加到您的输入中
var marker;
function placeMarker(location) {
if ( marker ) {
marker.setPosition(location);
} else {
marker = new google.maps.Marker({
position: location,
map: map
});
}
$("#location").val(location);
}
google.maps.event.addListener(map, 'click', function(event) {
placeMarker(event.latLng);
});
Now, whenever placeMarker(location)
gets called it will update the input with the id of "location" and its value is the output of location
. 现在,每当
placeMarker(location)
被调用时,它将使用id的“ location”更新输入,其值是location
的输出。
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