How to create a msg with multi parameters

General
1

Hi: I want to creat a new msg in function node like the msg below with multi parameters. How I should write?
msg.payload : Object
object
weather: "Rain"
temp_maxc: 25.5
temp_minc: 18.3
humidity: 53
pressure: 1000

2

Like this?

msg.payload = {
 weather: "Rain",
 temp_maxc: 25.5,
 temp_minc: 18.3, 
 humidity: 53, 
 pressure: 1000
}
return msg;

To create an object in JS, its just {} this is quite fundamental - you would do yourself a favour to do a little online training.


EDIT...
Just released you said "new msg" (however I dont recommend creating new msg every time - my preference is to re-use the msg object.

If you REALLY need a new msg then...

var newMsg = {};// create a new object
newMsg.payload = {
 weather: "Rain",
 temp_maxc: 25.5,
 temp_minc: 18.3, 
 humidity: 53, 
 pressure: 1000
}
return newMsg;
1 Like
3

Thank u so much.
But it seems that I asked wrong...
The node "openweathermap" requires input msg.location.city and msg.location.country.
This is "location" rather than "payload". I know the "location" is not a correct parameter of msg.
How to create the msg like this..

4

Messages are regular JavaScript objects. They can have whatever properties you want them to have.

If you look at the code that @Steve-Mcl shared, he showed how to set msg.payload as an object of key/value pairs

So to set msg.location instead, you can do:

msg.location = {
   city: "here",
   country: "there"
}
1 Like