I tried using the findNodesByText  to find a string contained in a node. To my great surprise it only search an exact match?

[I'm a node]

 var nodes = this.treeIDMap.igTree( "findNodesByText", "I'm a"  );// -> Found nothing

 var nodes = this.treeIDMap.igTree( "findNodesByText", "I'm a node"  );// -> Found the node

 var nodes = this.treeIDMap.igTree( "findNodesByText", "node" );// -> Found nothing

Why would that be? So figuring this is only an exact match I'm trying to code a function to do what I need.

------------Here is one way to do it I guess ---------       

 var foundNodes = new Array();
         filter = filter.toLowerCase();
      
         findInObject = function( obj, prop, val )//go as deep as posible and find a match
         {
             if ( obj !== null && obj.hasOwnProperty( prop ) && obj[prop].toLowerCase().indexOf(val) > -1 )
             {
                 return obj;
             } else
             {
                 for ( var s in obj )
                 {
                     if ( obj.hasOwnProperty( s ) && typeof obj[s] == 'object' && obj[s] !== null )
                     {
                         var result = findInObject( obj[s], prop, val );
                         if ( result !== null )
                         {
                             return result;
                         }
                     }
                 }
             }
             return null;
         }

        for ( var i = 0; i < this.treeData.length; i++ )//use the internal copy of the data to do the search and only modify the live
        {
             if ( findInObject( this.treeData[i], "ITEM", filter ) ) foundNodes.push( this.treeData[i] )//does the node have a match in it anywhere?
        }



         this.treeIDMap.igTree( { dataSource: foundNodes } );
         this.treeIDMap.igTree( "dataBind" );

still would like it faster.