anchor.diff:                  label AST
                   input(type="radio", name="view", value="js", data-bind="checked: view")
                   label Javascript
  +                = " | "
  +                a(href="javascript:void 0", data-bind="click: on_getPermalinkClicked") Get Permalink
   
               #output.fill-container.container
                   // ko if: view() == 'js'
  
positive.code:                         }
                          this.compilerErrors(undefined)
                      }, this).extend({throttle: 500})
                  }).apply(viewModel)
  
                  ko.applyBindings(viewModel)
  
negative.code:                     this.ast = ko.observable()
                      this.compiledJs = ko.observable()
                      this.inputAngl = ko.observable('')
                      this.on_getPermalinkClicked = function() {
                          var hash = encodeURIComponent(this.inputAngl())
                          window.location.hash = hash
                      }
                      _.bindAll(this, 'on_getPermalinkClicked');
  
                      var recompile = ko.computed(function() {
                          try {
  