> For the complete documentation index, see [llms.txt](https://docs.appfarm.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.appfarm.io/library/action-nodes/if.md).

# If

Control under which circumstances an Action Node or a set of nodes should be executed. You may add conditions to the `IF` node, and you may add Action Nodes as children of the `IF` node. If the condition is evaluated as `true`, all Action Nodes inside will trigger. You may also add `IF` nodes inside another `IF` node, for more complex evaluation or control of the Action flow.

The If action node requires only a Condition to be set up. 

* Data Binding: Select a property (must be a boolean type property) holding TRUE or FALSE. The If will evaluate to TRUE depending on the property you select for Data Binding.
* Condition: Use the [Condition Editor](/reference/platform-concepts/conditions.md) to set up a logical expression. The If will evaluate to TRUE is this expression evaluates to TRUE.
* Function: Use the [Function Editor](/reference/platform-concepts/functions.md) to set up an advanced expression. You may use Javascript inside the Function Editor. The function must return either TRUE or FALSE.


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