 
     @commentWindowView = @findViewByName 'commentWindow'
     @commentView = @findViewByName 'comment'
-    @commentView.setTextAreaPlaceHolder '請留下您對此影片的意見或心得想法，以協助我們製作出更符合您學習需求的教學影片'
     @onLoadData()
     @registerEvent()
     @commentWindowMaxWidth = 500
     domUtils.css @commentWindowView.el, {position:'absolute', width:"#{@commentWindowMaxWidth}px", display:'none',zIndex:1}
     document.addEventListener 'click', => @closeComment()
+
+  TEXT_PLACEHOLDER: '請留下您對此影片的意見或心得想法，以協助我們製作出更符合您學習需求的教學影片'
     
   ###
    *

    {ehAttrUser, ehAttrType, ehAttrTarget} = dataset
    deferred = api.getComment ehAttrUser, ehAttrType, ehAttrTarget, 1

    selects = JSON.parse( dataset.ehCommentSelect or "[]" )

    if selects.length

    else
      @commentView.hideSelector()

    textPlaceholder = if dataset.ehTextPlaceholder then dataset.ehTextPlaceholder else @TEXT_PLACEHOLDER
    @commentView.setTextAreaPlaceHolder textPlaceholder


  ###
   *
