Getting error null value of hostname

Question

1.00/5 (3 votes)

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1. My Html

HTML

<html>
<form class="form-horizontal" name="HnForm" novalidate>
    <h1>Hostname:</h1>
    <p id="hostname"></p>
    <button type="button" onclick="sendHostname()">Submit</button>
</form>

</html>

    function sendHostname() {
    var hostname = document.getElementById("hostname").innerText;
    var xhr = new XMLHttpRequest();
    xhr.open("POST", "/HN/GetHostname", true);
    xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
    xhr.onload = function () {
        if (xhr.status === 200) {
            var response = xhr.responseText;
            console.log("Response from server:", response);
        }
    };
    xhr.send("hostname=" + encodeURIComponent(hostname));
}

2. My controller

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Net;

namespace HN.Controllers
{
    public class HNController : Controller
    {
        public ActionResult Index()
        {
            return View();
        }

        [HttpPost]
        public ActionResult GetHostname(string hostname)
        {
            return Content("Hostname received successfully", hostname.ToString());
        }
    }
}

What I have tried:

My Question why my hostname is null value?

Please help me

Posted 6-Jun-23 0:37am

ROPU_05051971

Updated 6-Jun-23 7:15am

PIEBALDconsult

v3

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1 solution

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Richard MacCutchan · Answer 1 · 2023-06-06T01:00:00

The HTML contains:

HTML

<p id="hostname"></p>
<button type="button" onclick="sendHostname()">Submit</button>

The Javascript has:

JavaScript

function sendHostname() {
var hostname = document.getElementById("hostname").innerText;

You have a blank paragraph with the id of "hostname", but it does not contain any innerText.

Getting error null value of hostname

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Getting error null value of hostname

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