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POJavascript recursive function reference this
 

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    <p>I'm trying to create a function that will generate a tree like structure such that each item contains a reference to it's parent item. </p> <p>I have a function that calls itself when creating the children but am having a tough time with it, it seems that once it is called from within itself <code>this</code> still refers to the top level item rather than the current one. </p> <p>Logging to console what the item is I can see that parent always refers to the first item in the chain (or is absent) when deeper than the first level. It creates the tree, but references to parent are lost for items besides the first.</p> <pre><code>var Item = function (item, parent) { console.log('item is :' + item.name); this.parent = parent; console.log('parent is: ' + parent); var fields = _.union(_.keys(item), _.keys(this.parent)); _.each(_.without(fields, ['parent','children']), function (prop) { this[prop] = angular.isDefined(item[prop]) ? item[prop] : this.parent[prop]; }, this); this.children = []; if (item.children) { this.children = _.map(item.children, function (child) { console.log('this is : ' + this); return new Item(child, this) }, this); } }; var tree = new Item(root, {}); </code></pre> <p>Having a bit of trouble getting a fiddle going, but here is some sample data:</p> <pre><code>var root = JSON.parse('{"id":"1","name":"root item","root":"1","lft":"1","rgt":"22","level":"1","type": "category","parent_id":"1","deadline":null, "children":[ {"id":"2","name":"item 1","root":"1","lft":"14","rgt":"15","level":"2","type":"category","parent_id":"1"}, {"id":"6","name":"item 2","root":"1","lft":"16","rgt":"19","level":"2","type":"category","parent_id":"1"}, {"id":"10","name":"item 3","root":"1","lft":"20","rgt":"21","level":"2","type":"item","parent_id":"1"}]}'); </code></pre>
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    1. COJust a typo, I had been experimenting and forgot to change it back before posting. Fixed it here, problem is still the same.
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    2. COCan you create fiddle for this with some dummy data?
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    3. COSure thing, might take a few minutes to get it together. Thanks.
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