knockout-2.0

问题 I really like how Eric Barnard's knockout validation lib integrates with observables, allows grouping, & offers custom validator pluggability (including on-the-fly validators). There are a couple of places where it could be more UX flexible/friendly, but overall it's reasonably well-documented... except, imo, when it comes to async validators. I wrestled with this for a few hours today before doing a search and landing on this. I think I have the same issues/questions as the original author,

问题 When using: var dataToSave = ko.toJSON(myViewModel); .. is it possible to not serialize values that are null? Serializing my current viewModel creates around 500Kb of JSON most of which is ends up like: "SomeObject": { "Property1": 12345, "Property2": "Sometext", "Property3": null, "Property4": null, "Property5": null, "Property6": null, "Property7": null, "Property8": null, "Property9": false } If I could get the serializer to ignore null values then this could be reduced down to:

问题 I'm using JQuery DataTables for all my tables because of all the nice built-in features, but it seems the only way to customize the table layout is to set the "sDom" option attribute for the DataTable and use something like $("div.SOMECLASS").html(HTML_HERE) to insert the customized html into the table. (FYI, i'm just trying to customize the header). The problem is I want the inserted html to use knockoutjs binding. Knockout doesn't seem to initialize the binding this way. Is there a way to

问题 I need to detect when items are moved in an observableArray. In my current version (2.1.0) I accomplish this by calling setTimeout on all delete events and waiting to see if an add event follows immediately on its heels: var delayed = []; var key; /* obtained by comparing original observableArray with updated list and iterating all differences */ if( /** record exists in original list but not new list ) { // it was deleted, we don't immediately fire a notification (it may get re-inserted in a

问题 $.ajax({ url: "/survey/surveyQuestions", success: function (questionsData) { $.ajax({ url: "/survey/surveyOptions", success: function (optionsData) { alert(questionsData.length); for (var i = 0; i < questionsData.length; i++) { QuestionsScript.Question = ko.mapping.fromJS(questionsData[i]); ko.applyBindings(QuestionsScript, document.getElementById("innerDiv")); for (var j = 0; j < optionsData.length; j++) { if (optionsData[j].QuestionId = questionsData.QuestionId[i]) { OptionsScript.Option =

问题 Hi I have a JSON array like so [{ "id": "537901a53513fa3374bec718", "images": [], "itemImage": "img/3.jpg", "createdDate": "5/18/2014 6:53:25 PM", "location": [ -2.057802, 52.609711 ] }, { "id": "537901a53513fa3374bec710", "images": [ "img/17.jpg" ], "itemImage": "img/1.jpg", "createdDate": "5/18/2014 6:53:25 PM", "location": [ -2.062251, 52.612397 ] }] I'm trying to use the ko.mapping.fromJSON / JS, but i keep messing up sigh :( var viewModel = {}; in my Ajax success function, viewModel

问题 I am using knockout and i have one html page where i want to check string with some value. Like i have one string 'A:B:C:D:F:G:H:I', i just want to check this string in html with knockout if. Model var viewModel = function () { var self = this; self.key = ko.observable("A:B:C:D:F:G:H:I"); } View <!-- ko if: key().contains('A') --> <input type="checkbox" checked="checked" value="A"/> <!-- /ko --> <!-- ko if: key().contains('B') --> <input type="checkbox" checked="checked" value="B"/> <!-- /ko

问题 I'm trying to map JSON data using the knockout.mapping plugin, however the heirarcical JSON data fails to populate my object properties correctly, the top level loads fine but not the child 'RootTarget' data? What am I doing wrong? Knockout Javascript var Query = function(json) { this.ID = ko.observable(0); this.Name = ko.observable(); this.RootTargetID = ko.observable(); this.RootTarget = ko.observable(); var mapping = { 'RootTarget': { create: function (args) { return new QueryTarget(args

问题 in this fiddle there is an add timing button . There is default row having week day dropdown,from time textfield,to time textfield and hospital drop down.Now when I click on the add timing button I want another row having week day dropdown,from time textfield,to time textfield and hospital dropdown. Can any body please tell me how to do that? This is my knockout code var DocSchedule = function (id, day, fromtime, totime, hospital, hospitalId) { this.id = ko.observable(id); this.day = ko

问题 I am building an application with Knockout and find it very useful. Although, I have a problem with getting multidimensional array (object) observable. At the moment I am using following structure: self.form = ko.observableArray(ko.utils.arrayMap(initialData, function(section) { var result = { name : section.name, code : section.code, type : section.type, fields: ko.observableArray(section.fields) }; return result; })); It works well, but I can't get it working if the initialData is more than