Autosave the text in tinymce with AJAX - php

Question

I want to autosave my text in tiny mce with a post to my controller. I want only autosave the name="inhoud2" of the textarea.
Here is my header:
#extends('dashboard.app')
#section('content')
#include('auth.flashMessageError')
<script src="\tinymce_4.4.1\tinymce\js\tinymce\tinymce.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script>tinymce.init({ selector: 'textarea', height : 350, }); </script>
<script>tinymce.init({ selector:'textarea' });</script>
<script>
var autosaveOn = false;
function myAutosavedTextbox_onTextChanged()
{
if (!autosaveOn)
{
autosaveOn = true;
$('#inhoud2').everyTime("300000", function(){
$.ajax({
type: "POST",
url: "opslaanedit",
data: $("#editsubmit").serialize(),
success: function(msg) {
$('autosave').text("gesaved");
}
});
}); //closing tag
}
}
</script>
This is my html code:
<form method="POST" id="editsubmit" action="/opslaanedit" >
{!! csrf_field() !!}
<div id="autosave"></div>
<div class="panel panel-flat">
<div class="panel-heading">
<h5 class="panel-title">Wijzig Document</h5>
<div class="heading-elements">
</div>
</div>
<div class="panel-body">
<fieldset>
<legend class="text-semibold">Wijzig de inhoud</legend>
<div class="form-group">
<input type="hidden" value="{{basename($root)}}" name="filename" id="filename" readonly="readonly" class="form-control" > <!-- verborgen veld voor de html name -->
<label><b>Titel</b> </label>
<input type="text" value="{{$title}}" id="titelnieuw" name="titelnieuw" class="form-control">
</div>
<textarea id="inhoud2" name="inhoud2"><?php echo file_get_contents($root);?></textarea> <!--tiny mce editor -->
<br>
<div class="text-left">
<button type="submit" class="btn btn-primary">Wijzig <i class="icon-arrow-right14 position-right"></i></button>
</div>
</div>
</div>
</form>
#endsection
I doesn't save my text automatically.

Answer 1

This looks like inherited code. There's lot of space for improvement. I don't know if textarea is saved for the first time, or just updated, so I cant figure to which route should I post value of textarea. Are there any other fields required for that?
There are many factors. And if you only afraid of losing textarea content, I would use just autosave plugin from tinymce. It keeps content in local storage.