NodeJS - AJAX POST 404 (Not Found) - node.js

Question

I am trying to send values from one file to another on click of items displayed.
While doing so, I am getting the error:
POST http://localhost:4000/todo/addToCart 404 (Not Found) jquery-3.3.1.js:9600
My app.js file:
//More codes above to set-up express and all
app.use(express.static('./public'));
todoController(app); //give todocontroller the reference to express
app.listen(4000); //listen on a port
console.log('server is running');
Controller:
module.exports = function(app) {
app.get('/todo', function(req, resp) {
Todo.find({}, function(err, data) {
if (err) throw err;
console.log('get method');
resp.render('todo', {
todos: data
});
});
});
//Few More Code
app.post('/todo', urlencodedParser, function(req, resp) {
console.log('post method');
resp.render('addToCart', {
data: req.body
});
});
};
Model for data interaction:
$('li').on('click', function() { //when user clicks on an item in the list
var item = $(this).text().replace(/ /g, "-"); //traps the item user clicked on
alert(item);
$.ajax({
type: 'POST',
url: '/todo/addToCart', //+item append that item to the url
success: function(item) {
location.reload(); //refresh the page
}
});
});
Parent ejs:
<div id="todo-table">
<form id="todoForm" method="post" action="/todo">
<input type="text" name="item" placeholder="Add new Item..." required />
<button type="submit">Add Item</button>
<ul>
<% for (var i=0;i<todos.length; i++){ %>
<li>
<%=todos[i].item%>
</li>
<% } %>
</ul>
</form>
</div>
Child ejs(to which I need to re-direct):
<div id="itemSelect">Selected Item:
<form id="addToCart" method="post" action="/addToCart">
<button type="submit" id="btnCheckOut">Check out</button>
<%=data.item%>
</form>
</div>
Please help. I am new, kindly point out my mistake.
Many thanks.

Answer 1

The route you created on your nodejs server here:
app.post('/todo', urlencodedParser, function (req, resp) {
console.log('post method');
resp.render('addToCart', { data: req.body });
});
Matches all the POST requests made to the /todo endpoint, not the /todo/addToCart which doesnt exist. This is why you obtain a 404.
Your ajax request should be like so:
$('li').on('click', function () {
var item = $(this).text().replace(/ /g, "-");
alert(item);
$.ajax({
type: 'POST',
url: '/todo', // 'addToCart' has been removed from the path
success: function (item) {
location.reload();
}
});
});