I have the following code, I am trying to pass the value of an input textbox to a function that calculates a route, the textbox is receiving coordinates from a database elcode is as follows:
document.getElementById('Busca_Camino').addEventListener('click', function () {
calculateAndDisplayRoute(directionsService, directionsDisplay);
});
}
function calculateAndDisplayRoute(directionsService, directionsDisplay) {
var start = document.getElementById('TxtInicio').value;
var end = document.getElementById('TxtFin').value;
directionsService.route({
origin: start,
destination:end,
travelMode: 'DRIVING'
}, function (response, status) {
if (status === 'OK') {
directionsDisplay.setDirections(response);
} else {
window.alert('No se pudo calcular la ruta debido a' + status);
<asp:TextBox ID="TxtInicio" runat="server" ></asp:TextBox>
<asp:TextBox ID="TxtFin" runat="server"></asp:TextBox>