writing a function node for 'null' input -


i have 3 inputs, , them using bool-gate modul. works ok: flag shows "true" or "false", , output passes payloads if condition "true". don't know how realize function node giving out "1" or "0" turn relay on.

for example:

if (node.status === true);{ return node.status;}

or

if (node.status === true);{ msg.payload="1";} else if(node.status !== true){ msg.payload="0";} `

but haven't found way '1' if payload appears @ input (the 'true'-condition and-gate) or '0' if 'null' comes and-gate. have absolutely new in node-red , js.


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