Success function not being called after making AJAX request codeigniter - ajax

Question

When I make an AJAX call from view and pass form data to the controller. I get a couple of problems. First, the code inside success is never executed, and second, the page is being refreshed even though it is an AJAX call. Can anyone tell me where am I doing wrong?
I have seen a lot of questions since yesterday but none of them were able to solve my problem.
Model code
public function insert_user($name, $email) {
$data = array();
$data['name'] = $name;
$data['email'] = $email;
$data['created_at'] = date('y-m-d');
$this->db->insert('all_users', $data);
return true;
}
Controller code
public function insert_user () {
$data = $this->input->post();
$name = $data['name'];
$email = $data['email'];
$this->User_model->insert_user($name, $email);
$this->load->view('view');
}
Ajax request code
const insertBtn = $(".insert-btn");
insertBtn.on("click", function () {
const name = $(".insert-form input[type=name]");
const email = $(".insert-form input[type=email]");
$.ajax({
url: "<?php echo base_url() ?>index.php/Users/insert_user",
type: "post",
data: {name, email},
dataType: "json",
success: function () {
$("body").append("Request made successfully");
}
})
});
My form looks something like this:
<form class="insert-form" action="<?php echo base_url() ?>index.php/Users/insert_user" method="post">
<input type="text" name="name" placeholder="Enter name">
<input type="email" name="email" placeholder="Enter email">
<button class="insert-btn">Insert Data</button>
</form>
NOTE: I am able to successfully insert data into the database.

Answer 1

The browser is submitting the form before your AJAX code gets a chance to run/finish.
Instead of binding an event to the click event of the button, you want to bind to the submit event of the form. Then you want to cancel the browser's default action. This is done via the e.preventDefault(); method.
Also, dataType: "json" is not needed here. dataType tells jQuery what kind of data your AJAX call is returning. You generally don't need it as jQuery can automatically detect it. Plus, if you are not returning a JSON document, then this may cause a problem.
const insertForm = $(".insert-form");
insertForm.on("submit", function (e) {
const name = insertForm.find("input[type=name]");
const email = insertForm.find("input[type=email]");
e.preventDefault();
$.ajax({
url: "<?php echo base_url() ?>index.php/Users/insert_user",
type: "post",
data: {name, email},
success: function () {
$("body").append("Request made successfully");
}
})
});

Answer 2

Controller code
public function insert_user () {
$data = $this->input->post();
$name = $data['name'];
$email = $data['email'];
$data = $this->User_model->insert_user($name, $email);
$this->output
->set_content_type('application/json')
->set_output(json_encode($data));
}

Answer 3

Ajax request code
const insertBtn = $(".insert-btn");
insertBtn.on("click", function () {
const name = $(".insert-form input[type=name]");
const email = $(".insert-form input[type=email]");
$.ajax({
url: "<?php echo base_url() ?>Users/insert_user", // <?php echo base_url() ?>controller_name/function_name
type: "post",
data: {name, email},
dataType: "json",
success: function () {
$("body").append("Request made successfully");
}
})
});
form looks something like this:
<form class="insert-form" method="post">
<input type="text" name="name" placeholder="Enter name">
<input type="email" name="email" placeholder="Enter email">
<button class="insert-btn">Insert Data</button>
</form>

Answer 4

The page was being refreshed because I had a button that was acting as submit button on changing it to the input of the type button it does not submits the form and we don't see the page being refreshed. And also the AJAX request made also runs successfully.
<form class="insert-form" action="<?php echo base_url() ?>index.php/Users/insert_user" method="post">
<input type="text" name="name" placeholder="Enter name">
<input type="email" name="email" placeholder="Enter email">
<input type="button" class="insert-btn" value="Insert Data">
</form>