Conditionals

Rules

==, !=, is, and is not

These operators check if a value is equal to or different from the expected value using the equality operator. The is and is not are aliases for == and !=.

<, <=, >, and >=

These operators compare values to determine if one is less than, less than or equal to, greater than, or greater than or equal to another value.

in and not in

These operators check if a value is within a specified list of items. The list should be comma-separated.

Example

in: "on,off"

includes and not includes

These operators check if an array includes or does not include a specified value.

is null and is not null

These operators check if a value is null or not.

JSONata

This rule expects a boolean result from evaluating a value using JSONata, a powerful expression language. More information can be found here, with examples specific to Home Assistant here.

starts with

This operator checks if a value begins with the expected string.

in group

This operator checks if a value is present in the attributes.entity_id property of a given group.

Value Types

string, number, boolean, regular expression, and JSONata expression

These types evaluate and return the value as the specified type.

msg, flow, and global

These refer to the different contexts within Node-RED.

entity and prevEntity

These refer to the entities that triggered the node.

• entity refers to the current state entity.
• prevEntity refers to the previous state entity.

Examples

To reference the current state of the entity:

entity.: "state"

To reference the brightness attribute of the entity:

entity.: "attributes.brightness"