HTML required attribute not working with AJAX submission

HTML required attribute not working with AJAX submission

I have created a model Form and set its input field to require attribute but its not working with ajax

<div class="modal fade hide"  id="ajax-book-model" aria-hidden="true" data-backdrop="static" data-keyboard="false">
<div class="modal-dialog modal-lg">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="ajaxBookModel">Add New Machine</h5>
<!-- <button type="reset" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button> -->
<button type="button" class="btn-close" data-dismiss="modal" aria-label="Close" onClick="window.location.reload();">
</div>
<div class="modal-body">
<form action="javascript:void(0)" id="addEditBookForm" name="addEditBookForm" class="form-horizontal" method="POST">
<input type="hidden" name="id" id="id">
<input type="hidden" name="user_id" id="user_id" value="{{ Auth::user()->id }}">
<div class="row">
<div class="col-sm-12 col-md-4">
<div class="form-group">     
<label>Name</label>
<input type="text" id="machine_name" name="machine_name" class="form-control form-control-sm" placeholder="Enter Machine Name" required>
<span class="text-danger">{{ $errors->first('machine_name') }}</span>
</div>
</div>
<div class="col-sm-12 col-md-4">
<div class="form-group">     
<label>IOT Device ID</label>
<input type="text" id="iot_device_id" name="iot_device_id" class="form-control form-control-sm" placeholder="Enter IOT Device ID" required>
</div>
</div>
<div class="col-sm-12 col-md-4">
<div class="form-group">     
<label>Local device ID</label>
<input type="text" id="local_device_id" name="local_device_id" class="form-control form-control-sm" placeholder="Enter Local Device ID" required>
</div>
</div>
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-sm btn-gradient-danger mb-2" data-dismiss="modal" onClick="window.location.reload();">Close</button>
<button type="submit" id="btn-save" value="addNewBook" class="btn btn-sm btn-gradient-danger mb-2">Save</button>
</div>
</form>
</div>
</div>
</div>   

and this is ajax code

i just want to run simpal html required field validation with ajax

 $('body').on('click','#btn-save', function (event){
event.preventDefault();
var id = $("#id").val();
var user_id = $("#user_id").val();
var machine_name = $("#machine_name").val();
var iot_device_id = $("#iot_device_id").val();
var local_device_id = $("#local_device_id").val();
$("#btn-save").html('Please Wait...');
$("#btn-save"). attr("disabled", true);
// ajax
$.ajax({
type:"POST",
url: "{{ url('add-update-piezometer') }}",
data: {
id:id,
user_id:user_id,
machine_name:machine_name,
iot_device_id:iot_device_id,
local_device_id:local_device_id,
},
dataType: 'json',
success: function(res){
window.location.reload();
$("#btn-save").html('Submit');
$("#btn-save"). attr("disabled", false);
}
});
});

i just want to run required field validation with ajax i could not find any solution .

Try changing your btn click event to form submit event.

$('body').on('submit', '#addEditBookForm', function (event) {
event.preventDefault();
var id = $("#id").val();
var user_id = $("#user_id").val();
var machine_name = $("#machine_name").val();
var iot_device_id = $("#iot_device_id").val();
var local_device_id = $("#local_device_id").val();
$("#btn-save").html('Please Wait...');
$("#btn-save").attr("disabled", true);
// ajax
$.ajax({
type: "POST",
url: "{{ url('add-update-piezometer') }}",
data: {
id: id,
user_id: user_id,
machine_name: machine_name,
iot_device_id: iot_device_id,
local_device_id: local_device_id,
},
dataType: 'json',
success: function (res) {
window.location.reload();
$("#btn-save").html('Submit');
$("#btn-save").attr("disabled", false);
}
});
});

The following should help: change to a form confirmation event instead of a Click button event. And do not forget to write this code so that the page does not reload:
event.preventDefault();