converting a asp.net mvc to a razor page - asp.net

Question

I have a asp.net web app that calls a controller action with the following code:
$(function () {
$("#barcode").on("change", function (e) {
// get the current value
var barcode = $('#barcode').val();
// if there's no text, ignore the event
if (!barcode) {
return;
}
// clear the textbox
$("#barcode").val("");
// var holdit = $('#textArea1').val();
$('#textArea1').val($('#textArea1').val() +' '+ barcode);
// post the data using AJAX
$.post('#Url.Action("scanned", "receiveScan")?barcode=' + barcode);
});
})
Controller:
[Produces("application/json")]
[Route("api/receiveScan")]
public class receiveScanController : Controller
{
private static readonly HttpClient client = new HttpClient();
public ActionResult scanned(string barcode)
{
var test = barcode;
receiveScanModel newScan = new receiveScanModel();
newScan.Barcode = barcode;
newScan.companyNo = 1;
string jsonScan = JsonConvert.SerializeObject(newScan, Formatting.Indented);
var httpWebRequest = (HttpWebRequest)WebRequest.Create("http://notarealservicehere.azurewebsites.net//api/receivescan");
httpWebRequest.ContentType = "application/json";
httpWebRequest.Method = "POST";
using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
streamWriter.Write(jsonScan);
}
var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
var result = streamReader.ReadToEnd();
}
return Ok();
Trying to convert to my first Razor page, everything works with the exception (obviously) of the $.post part...
Where would this go?
It is a asp.net core app with razor pages

Answer 1

Use a handler for example
on your cs file
public IActionResult OnPostBarcode(string barcode)
on your js
var uri = "myPage/?handler=Barcode"
$.post( uri ,{barcode:barcode}, function( data ) {
console.log(data)
});