[Solved] Object / Event Scope Problems

[Alexander]

Hi all,

i've a general Problem with JavaScript Scopes.
In our Application we us a JavaScript Object. This is a simple Version of this Object:

function FilterTree(srcTree) {
  this.init(srcTree);
}

FilterTree.prototype = {
  _srcTree: null,
  _dstTree: null,
  init: function(srcTree){
    this._srcTree = srcTree;
    this._srcTree.add_nodeChecked(this.otherFunction);
  },
  srcTree_nodeChecked: function(){
    alert('srcTree_nodeChecked:  called');
    this.otherFunction();
  },
  otherFunction(){
    alert('otherFunction called');
  }
}

So what we do is passing a RadTreeView Object to our Object Constuctor/init Function.
Then we want that our srcTree_nodeChecked Function is called when a Node is checked in the tree. Until here this works fine.
But
Our srcTree_nodeChecked function runs in another Scope. The function cant access the 'otherFunction' via 'this.otherFunction()';
This results in the ErrorMessage  'this.otherFunction is undefined.

Does someone know, how i can solve this probblem?

Thank you

regards

Alex

[Vlad]

Hello Alex,

You can manipulate the scope using call()/apply() - more info on this article:
http://www.digital-web.com/articles/scope_in_javascript/

Sincerely yours,
Vlad
the Telerik team

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