use array.filter

examples/js/loaders/FBXLoader.js

@@ -777,13 +777,11 @@ THREE.FBXLoader = ( function () {
 
 				if ( morphTargetNode.attrType !== 'BlendShapeChannel' ) return;
 
-				var targetRelationships = connections.get( parseInt( child.ID ) );
+				rawMorphTarget.geoID = connections.get( parseInt( child.ID ) ).children.filter( function ( child ) {
 
-				targetRelationships.children.forEach( function ( child ) {
+					return child.relationship === undefined;
 
-					if ( child.relationship === undefined ) rawMorphTarget.geoID = child.ID;
-
-				} );
+				} )[ 0 ].ID;
 
 				rawMorphTargets.push( rawMorphTarget );
 
@@ -2488,13 +2486,13 @@ THREE.FBXLoader = ( function () {
 
 								if ( layerCurveNodes[ i ] === undefined ) {
 
-									var modelID;
+									var modelID = connections.get( child.ID ).parents.filter( function ( parent ) {
 
-									connections.get( child.ID ).parents.forEach( function ( parent ) {
+										return parent.relationship !== undefined;
 
-										if ( parent.relationship !== undefined ) modelID = parent.ID;
+									} )[ 0 ].ID;
 
-									} );
+									if ( modelID !== undefined ) {
 
 										var rawModel = fbxTree.Objects.Model[ modelID.toString() ];
 
@@ -2531,19 +2529,19 @@ THREE.FBXLoader = ( function () {
 
 									}
 
-								layerCurveNodes[ i ][ curveNode.attr ] = curveNode;
+								}
+
+								if ( layerCurveNodes[ i ] ) layerCurveNodes[ i ][ curveNode.attr ] = curveNode;
 
 							} else if ( curveNode.curves.morph !== undefined ) {
 
 								if ( layerCurveNodes[ i ] === undefined ) {
 
-									var deformerID;
+									var deformerID = connections.get( child.ID ).parents.filter( function ( parent ) {
 
-									connections.get( child.ID ).parents.forEach( function ( parent ) {
+										return parent.relationship !== undefined;
 
-										if ( parent.relationship !== undefined ) deformerID = parent.ID;
-
-									} );
+									} )[ 0 ].ID;
 
 									var morpherID = connections.get( deformerID ).parents[ 0 ].ID;
 									var geoID = connections.get( morpherID ).parents[ 0 ].ID;