Using MAP or flatMap in Node

Questions
1

Does someone can inform how I can use map or flatmap into Function Node?

2

If I understood correctly you want to map this:

{
  "code": 886079657,
  "codinterger": "1377",
  "fullname": "ACME",
  "tags": [
    {
      "tag": "Supplier"
    },
    {
      "tag": "testA"
    },
    {
      "tag": "testB"
    },
    {
      "tag": "testC"
    }
  ],
  "type": "N"
}

To this:

{
   "tags": ["Supplier", "testA", ....]
}

If that is the case, you can use the Item Lists node. Check the example below.

Example workflow
3

Hi @RicardoE105 ,
almost it, it you see in my code, then you will notice that I need to insert a increment in the result:

"value": ${t.tag}
4

An index? I ran you code a got:

image
image1490×114 3.85 KB

To do that, add the following code to Map2

const tags = items[0].json.tags;
return [
  {
    json: {
      tags: tags.map(tag => `value: ${tag.tag}`)
    } 
  }
]
5

@RicardoE105 , your solution worked very well. Thank you.
If you allow me, let me ask you one more thing, how many ways is possible to select a Node, for instance:

items[0].json.tags // select from the current node
$node["Function"].json["tags"] // select from a specific node
items[0].json.app_key
$item(0).$node["Init Data"].data["myNumber"];
$items("Webhook_Start", 0, 0)[0].json.body
$items("HTTP Request", 0, counter)
$node["getPOSTCODE_API_A"].json["status"]