✨ Add $items to expression and Function-Nodes to get all items

docs/node-basics.md

@@ -48,11 +48,13 @@ the value would be: "My name is: Jim"
 The following special variables are available:
 
  - **$binary**: Incoming binary data of a node
- - **$data**: Incoming JSON data of a node
  - **$evaluateExpression**: Evaluates a string as expression
  - **$env**: Environment variables
- - **$node**: Data of other nodes (output-data, parameters)
+ - **$items**: Environment variables
+ - **$json**: Incoming JSON data of a node
+ - **$node**: Data of other nodes (context, output-data, parameters)
  - **$parameters**: Parameters of the current node
+ - **$workflow**: Returns workflow metadata like: active, id, name
 
 Normally it is not needed to write the JavaScript variables manually as they can be simply selected with the help of the Expression Editor.
 

docs/nodes.md

@@ -59,7 +59,7 @@ return newItems;
 ```
 
 
-#### Method: $item(index)
+#### Method: $item(index: number)
 
 With `$item` it is possible to access the data of parent nodes. That can be the item data but also
 the parameters. It expects as input an index of the item the data should be returned for. This is
@@ -88,6 +88,28 @@ const channel = $item(9).$node["Slack"].parameter["channel"];
 ```
 
 
+#### Method: $items(nodeName?: string, outputIndex?: number, runIndex?: number)
+
+Gives access to all the items of current or parent nodes. If no parameters get supplied
+it returns all the items of the current node.
+If a node-name is given, it returns the items the give node did output. By default of the
+first output (index: 0, most nodes only have one output, exceptions are IF and Switch-Node)
+and the current run.
+
+Example:
+
+```typescript
+// Returns all the items of the current node and current run
+const allItems = $items();
+
+// Returns all items the node "IF" outputs (index: 0 which is Output "true" of current run)
+const allItems = $items("IF");
+
+// Returns all items the node "IF" outputs (index: 1 which is Output "false" of run 0 which is the first one)
+const allItems = $items("IF", 1, 0);
+```
+
+
 #### Variable: $node
 
 Works exactly like `$item` with the difference that it will always return the data of the first item.