智能家居HomeAssistant使用Node-RED的change节点的教程（五）

今天来说【智能家居HomeAssistant使用Node-RED的change节点的教程】内容

change节点，用于操作消息体中某些变量，可以根据规则，对msg.payload的值进行“设定，修改，删除，转移”变量，替换msg.payload的值将其中的字母a替换为b等等。

[{"id":"322871f70e871937","type":"tab","label":"daochu","disabled":false,"info":"","env":[]},{"id":"3cd7625b678ee369","type":"change","z":"322871f70e871937","name":"","rules":[{"t":"change","p":"payload","pt":"msg","from":"F","fromt":"str","to":"M","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":430,"y":400,"wires":[["06e4d1f8790ea8f9"]]},{"id":"8aa3aef8b725ea65","type":"inject","z":"322871f70e871937","name":"","props":[{"p":"payload"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"aFZ","payloadType":"str","x":190,"y":400,"wires":[["3cd7625b678ee369"]]},{"id":"06e4d1f8790ea8f9","type":"debug","z":"322871f70e871937","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":690,"y":400,"wires":[]}]

以上就是【智能家居HomeAssistant使用Node-RED的change节点的教程】内容

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