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javascriptember.jsobservers

ember js component observer does not work

I have a scenario in emberjs component where the observe does not get hit. I figured out the reason as "the component is not yet inserted when the component property being observed is set."

My questions is, couldn this be handled in a better way in ember js?

Better explanation can be found in the below jsbin`s.

Not working Scenario

Working scenario

Solution

  • You can specify .on('init') to force the observers to run right after initialization; otherwise like @Kingpin2k mentioned - they don't run

    App.TextboxDisplayComponent = Ember.Component.extend({
  displayText: '',        

  boundProperty: '',

  observeBoundProperty: function () {
    this.set('displayText', this.get('boundProperty'));        
  }.observes('boundProperty').on('init')
});

    Your (non-)working example here