在Node-RED功能塊上爲每個輸出返回一條消息

Question

在Node-RED中，如何在功能塊上返回多條消息，每個輸出對應一條消息？

我試過這個基於文檔，沒有成功。

msg1 = "1" 
msg2 = "2"; 
msg3 = "3"; 

msg.payload = [msg1, msg2, msg3]; 

return msg 

Answer 1

您需要返回不只是字符串所以，首先你需要用有效載荷鍵建立對象的對象

msg1 = {payload: "1"} 
msg2 = {payload: "2"}; 
msg3 = {payload: "3"}; 

msg = [msg1, msg2, msg3]; 

return msg; 

Answer 2

var msg1 = { payload:"@" + msg.tweet.user.screen_name + "first out of output 1" }; 
var msg2 = { payload:"@" + msg.tweet.user.screen_name + "second out of output 1" }; 
var msg3 = { payload:"@" + msg.tweet.user.screen_name + "third out of output 1" }; 
var msg4 = { payload:"@" + msg.tweet.user.screen_name + "only message from output 2" }; 
return [ [ msg1, msg2, msg3 ], msg4 ];