How Get HiddenField Value on PageLoad (Code behind)

Question

I used Java Script for set Value on Hidden field , i want use hidden field value for Data Source on Repeater but i have Empty Value because i need first run Java Script and Get Value on Page Load. How it's Possible? My Javascript Code is :

<script type="text/javascript">
    function getLocation() {
        if (navigator.geolocation) {
            navigator.geolocation.getCurrentPosition(function showPosition(position) {
                //x.innerHTML = "Latitude: " + position.coords.latitude +
                //"<br>Longitude: " + position.coords.longitude;
                //console.log("Latitude: " + position.coords.latitude +
                //"<br>Longitude: " + position.coords.longitude);

                var lat = position.coords.latitude;

                document.getElementById('<%= hdfLat.ClientID %>').value = lat;

                var lon = position.coords.longitude;

                document.getElementById('<%= hdfLong.ClientID %>').value = lon; 
            });                 
        } else {
            var error = "Geolocation is not supported by this browser.";
            alert(error);
        }
    }
</script>

Answer 1

look like you can call your function or make it a self executing function.

getLocation();