tips for transferring a javascript function value to a label within a webform

Currently, I am in search of the latitude and longitude coordinates for a specific address input by the user. Upon clicking a button, the script provided below is triggered to display an alert with the latitude and longitude values:

<script type="text/javascript" src="http://maps.google.com/maps/api/js?v=3&sensor=false&key=AIzaSyDVk87DSFyZlxmYAM8NPNr8sZPN60FYLNA"></script>
<script type="text/javascript">
function calculateCoordinates() {
    // Retrieving elements from the HTML document
}

 </script>
 <asp:TextBox id="txtLatitude" runat="server" Width="100px"></asp:TextBox>                      
 <asp:TextBox id="txtLongitude" runat="server" Width="100px"></asp:TextBox>

The functionality works smoothly at present, but I have two main requirements: 1. Instead of using a textarea, I need to utilize a Label element as the address will be fetched from a database. 2. The latitude and longitude values should be passed to labels within the code so that I can later save them in the database.

Is there a way to achieve this within the current setup, or are there simpler alternatives available?

Answer №1

Follow these steps to achieve it:

// Setting the location
var location = "downtown New York City";


// Utilizing the GetLocation function with error handling for response validation;

GetLocation(location, function (coordinates) {
    alert(coordinates);
    var lat = coordinates.lat,
        lng = coordinates.lng;

});


function GetLocation(location, callback) {
    var geocoder = new google.maps.Geocoder();
    geocoder.geocode({
        'address': location
    }, function (results, status) {
        if (status == google.maps.GeocoderStatus.OK) {
        callback(results[0].geometry.location);
    } else {
        callback();
    }

    })
};

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