Can't submit the page even though using preventDefault in laravel - html

Question

I can't submit the form even though I used preventDefault, (page refreshed and doesn't take any action) My form inputs are filled dynamically here is my code.
HTML
<div class="modal-body">
<form id="update_form">
<!-- loaded below -->
</form>
</div>
another request that fill my form data
#csrf
<div class="form-row">
<div class="form-group col-md-6">
<input type="hidden" name="request_type" value="{{RegisterTypesNames::Faculty}}">
<label>University</label>
<select name="university" class="custom-select" id="university{{$action}}">
<option selected value="1">University of Cansas</option>
</select>
</div>
<div class="form-group col-md-6">
<label>Faculty</label>
<input type="text" class="form-control" name="faculty" id="faculties{{$action}}">
</div>
<div class="form-group col-md-6">
<label>Init</label>
<input type="text" class="form-control" name="short_name" id="short_names{{$action}}">
</div>
</div>
<button type="submit" class="btn btn-primary"><span class="fa fa-save"></span> Save</button>
And jquery code
$('#update_form').submit(function (e) {
$.ajax({
url: '/update_data',
type: "POST",
data: $('#update_form').serialize(),
dataType: "json",
success: function (data) {
console.log(data.result);
}
});
e.preventDefault();
});
Note: I use multiple partial forms like this all others works fine

Answer 1

I can't submit the form even though I used preventDefault, (page refreshed and doesn't take any action)
Interpretation: the statements "page refreshed" and "used preventDefault" indicate that the problem is that the code inside the $("#id").submit( is not firing and the page's default submit is kicking in hence the "page refreshed".
As the jquery event is not firing, it likely means that the HTML does not exist when the script runs. This can usually be handled by putting in a doc.ready; OP indicates that it's already in doc.ready.
The alternative is to use event delegation. Though it's not clear if the code is running before the HTML is generated or if the HTML is added after (subtle difference).
The solution for event delegation is to use:
$(document).on("submit", "#update_form", function(e) {
e.preventDefault();
$.ajax({...
});