Попробуй это. Используйте запрос ajax. Добавьте прослушиватель событий в отправку формы.
Html
<form class="contact-us" action="#" name="form_contact">
<input type="hidden" name="formID_contact" value="609" />
<div style="padding:10px;" class="bg-boxshadow ">
<!-- Text input-->
<div class="row">
<div class="col-xl-4 col-lg-4 col-md-12 col-sm-12 col-12">
<div class="form-group">
<label class="sr-only control-label" for="name">name<span class=" "> </span></label>
<input id="name" name="name" type="text" maxlength="30" placeholder="Name" class="form-control input-md" required>
</div>
</div>
<!-- Select Basic -->
<div class="col-xl-12 col-lg-12 col-md-12 col-sm-12 col-12">
<div class="form-group">
<label class="control-label" for="message"> </label>
<textarea class="form-control" id="message" rows="7" name="message" maxlength="200" placeholder="Message" required></textarea>
</div>
</div>
<!-- Button -->
<div class="col-xl-12 col-lg-12 col-md-12 col-sm-12 col-12">
<button type="submit" class="btn btn-default">Submit</button>
</div>
</div>
</form>
Js
$("form.contact-us").submit(function(e) {
e.preventDefault(); //dont refresh the page
$.ajax({
url: '/../contact', //endpoint
method: 'POST', //post request
data: $("form.contact-us").serialize(), //get data of form
success: function(data) { //success function
$("form.contact-us").css('display', 'none'); //hide form
alert('Thank you for your Contacting us'); //show thank you message
},
error: function(data) { //error function
alert("Error")
}
});
});