How to use Html.Raw(Json.Encode(Model)) properly?

Question

I'm trying to Encode my MVC Model with the following code but the alert message gives me a null value. I'm not sure why it's giving me a null value because this is a create form. I'm trying to create a model from this and my html Code has the following look:

@using (Html.BeginForm()) 
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <h4>Customer</h4>
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        <div class="form-group">
            @Html.LabelFor(model => model.Name, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Name, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.Name, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Create" class="btn btn-default" id="submit" />
            </div>
        </div>
    </div>
}

<div>
    @Html.ActionLink("Back to List", "Index")
</div>

@section Scripts {
    <script type="text/javascript">
        $(document).ready(function () {
            $('#submit').click(function () {
                var JsonModel = '@Html.Raw(Json.Encode(@Model))';

                alert(JsonModel); // json as string

                var model = JSON.parse(JsonModel); // will give json
                alert(model);

                $.ajax({
                    type: "POST",
                    url: "../Home/Index",
                    data: {"cus" :  model},
                    success: function(data){
                        alert("done");
                    },
                    error:function(){
                        alert("Error!!!!");
                    }
                });
            });
        });
    </script>
} 

Answer 1

It's returning null because it is null. The data that the user will eventually enter into the form is not available at the time the page is rendering (and your call to Json.Encode(Model) runs). Things like JavaScript run client-side, while all the Razor stuff runs server-side before it's sent down to the client. If you want to get the user-entered data from the form for use in your AJAX call, then you need to do as @Sippy suggests and retrieve it via JavaScript:

$('form').serializeObject();

Also, in case you do need to actually encode the model when rendering (for maybe use with something like Knockout), you don't need to set it as a string and then parse the string. Just set it as a regular JavaScript object. That's all JSON is anyways:

var model = @Html.Raw(Json.Encode(Model));