Skip to main content

Cannot read properties of null in SPA javascript when reading a form in another route

I have the below single page application, but when I go to the login route, and submit, the event listener for the form is not triggered

And I get this error :

Uncaught TypeError: Cannot read properties of null (reading 'addEventListener')
    at login?session%5Bemail%5D=fdf%40gmail.com&session%5Bpassword%5D=dfdf&session%5Bremember_me%5D=0:34:6

This is the home page

<!DOCTYPE html>
<html>
    <head>
        <title>Vanilla SPA Router</title>
        <meta charset="UTF-8" />
        <link rel="stylesheet" href="css/styles.css" />
        <link href="https://cdn.jsdelivr.net/npm/@mdi/font@6.5.95/css/materialdesignicons.min.css" rel="stylesheet" />
    </head>

    <body>
        <div id="root">
            <nav id="main-nav" class="sidebar">
                <a href="/" onclick="route()">Home</a>
                <a href="/about" onclick="route()">About</a>
                <a href="/lorem" onclick="route()">Lorem</a>
                <a href="/login" onclick="route()">login</a>

            </nav>
            <div id="main-page"></div>
        </div>



<script>
  const form = document.querySelector("#userinfo");
  console.log("I'm here 1");
async function sendData() {
  console.log("I'm here 2");
  const outputElement = document.getElementById('output');
    outputElement.innerHTML = "change success";

}
// Take over form submission
form.addEventListener("submit", (event) => {
  event.preventDefault();
  sendData();
});
</script>

        <script src="js/router.js"></script>
    </body>
</html>

This is the login page

    <div class='row'>
      <div class='col-md-6 col-md-offset-3'>
        
          <form id="userinfo">
  
              <label for="session_email">Email</label>
              <input class="form-control" type="email" name="session[email]" id="session_email" />
  
              <label for="session_password">Password</label>
              <a href="/password_resets/new">(forgot password)</a>
              <input class="form-control" type="password" name="session[password]" id="session_password" />
  
              <label class="checkbox inline" for="session_remember_me">
                  <input name="session[remember_me]" type="hidden" value="0" autocomplete="off" /><input type="checkbox" value="1" name="session[remember_me]" id="session_remember_me" />
                  <span>Remember me on this computer</span>
  </label>
  <input type="submit" value="Submit" />
  </form>
          <p>New user? <a href="/signup">sign up now!</a></p>
      </div>
      <div id="output" style="color:black">
        before change
      </div>
  </div>

Javascript code

const route = (event) => {
    event = event || window.event;
    event.preventDefault();
    window.history.pushState({}, "", event.target.href);
    handleLocation();
};

const routes = {
    404: "/pages/404.html",
    "/": "/pages/index.html",
    "/about": "/pages/about.html",
    "/lorem": "/pages/lorem.html",
    "/login": "/pages/login.html",

};

const handleLocation = async () => {
    const path = window.location.pathname;
    const route = routes[path] || routes[404];
    const html = await fetch(route).then((data) => data.text());
    document.getElementById("main-page").innerHTML = html;
};

window.onpopstate = handleLocation;
window.route = route;

handleLocation();
Via Active questions tagged javascript - Stack Overflow https://ift.tt/Aosi8g1
Labels:

Comments

Post a Comment

Popular posts from this blog

Where and how is this Laravel kernel constructor called? [closed]

Where and how is this Laravel kernel constructor called? public fucntion __construct(Application $app, $Router $roouter) { } I have read the documentation and some online tutorial but I can find any clear explanation. I am learning Laravel and I am wondering where does this kernel constructor receives its arguments from. "POSTMOTERM" CLARIFICATION: Here is more clarity.I have checked the boostrap/app.php and it is only used for boostrapping the interfaces into the container class. What is not clear to me is where and how the Kernel class is instatiated and the arguments passed to the object calling the constructor.Something similar to; obj = new kernel(arg1,arg2) or, is the framework using some magic functions somewhere? Special gratitude to those who burn their eyeballs and brain cells on this trivia before it goes into a full blown menopause alias "MARKED AS DUPLICATE". To some of the itchy-finger keyboard warriors, a.k.a The mods,because I believe in th...
Post a Comment
Read more

Why is my reports service not connecting?

I am trying to pull some data from a Postgres database using Node.js and node-postures but I can't figure out why my service isn't connecting. my routes/index.js file: const express = require('express'); const router = express.Router(); const ordersCountController = require('../controllers/ordersCountController'); const ordersController = require('../controllers/ordersController'); const weeklyReportsController = require('../controllers/weeklyReportsController'); router.get('/orders_count', ordersCountController); router.get('/orders', ordersController); router.get('/weekly_reports', weeklyReportsController); module.exports = router; My controllers/weeklyReportsController.js file: const weeklyReportsService = require('../services/weeklyReportsService'); const weeklyReportsController = async (req, res) => { try { const data = await weeklyReportsService; res.json({data}) console...
Post a Comment
Read more

How to show number of registered users in Laravel based on usertype?

i'm trying to display data from the database in the admin dashboard i used this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count(); echo $users; ?> and i have successfully get the correct data from the database but what if i want to display a specific data for example in this user table there is "usertype" that specify if the user is normal user or admin i want to user the same code above but to display a specific usertype i tried this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count()->WHERE usertype =admin; echo $users; ?> but it didn't work, what am i doing wrong? source https://stackoverflow.com/questions/68199726/how-to-show-number-of-registered-users-in-laravel-based-on-usertype
Post a Comment
Read more