Knockout mapping Json Array to Observable Array get error

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I´ve an problem to map my json array to an observable array.

I´ve got an error "Cannot read property 'fromJSON' of undefined"

This are my linked knockout scripts:

knockout-3.2.0.js knockout.mapping-latest.js knockout.mapping-latest.debug.js

My Json array looks like this:

[
{"$id":"1","GR":10},
{"$id":"2","GR":20},
{"$id":"3","GR":30},
{"$id":"4","GR":40},
{"$id":"5","GR":50},
{"$id":"6","GR":60},
{"$id":"7","GR":70},
{"$id":"8","GR":80}
]

And This is my vieModel:

function FormViewModel() {

var self = this;
self.CpGrp = ko.observable([]);
self.GR = ko.observableArray();

$(document).ready(function (){

....


done: function (e, data) {
                $(".progress").removeClass("progress-striped active"); // we're done

                debugger;

                var test
                $.getJSON("/api/Points",
                    function (dataa) {
                        dataType: 'json'

                   test = ko.toJSON(dataa);

                        ko.mapping.fromJSON(test, {}, self)


                    }
                )},


ko.applyBindings(new FormViewModel());

Where is the Bug?

asked 5 mins ago

Andreas Klumpe

1

Knockout mapping Json Array to Observable Array get error