Knockoutjs computed observable

Knockoutjs computed observable

Table of Contents 
  1. code-sample for view.
  2. code-sample for view model.

Step 1

Here is the code-sample for view code

<img class="status" src="~/Images/icon_status.png" data-bind="visible: SaveAsDraft" />
<img class="status" src="~/Images/icon_status_red.png" data-bind="visible: SaveAsError" />

  1. If SaveAsDraft is true then icon status images visible otherwise not visible.
  2. If SaveAsError is true then icon status images visible otherwise not visible. 

Step 2

Here is the code-sample for view model code

var viewModel = function (Status) {
    var self = this;

    self.Status = Status;
    self.SaveAsDraft = ko.observable(false);
    self.SaveAsError = ko.observable(false);

    self.SaveAsDraft = ko.computed(function () {
        if (self.Status == window.itk.model.constant.Draft) {
            return window.itk.mytime.viewmodel.SaveAsDraft(true);       
    }, self);

    self.SaveAsError = ko.computed(function () {
        if (self.Status == window.itk.model.constant.SaveError) {
            return window.itk.mytime.viewmodel.SaveAsError(true);
    }, self);   

ko.applyBindings(new viewModel());


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