Square brackets are being inserted into an arcade expression

[ccowin_odfw]

Hello,

So I have a table with URL links if a specific boundary has a PDF map available for folks to download. I created an arcade expression to add the HTML link. Not all boundaries have a URL so needed some logic to return nothing if there is no URL. However, there are two square brackets that are showing up and I have no idea why.

The pop-up:

The code:

if ($feature.CLOSURE_MAP != ''){

  if ($feature.Map_URL != '') {

    var urls = Split($feature.Map_URL, ', ')

    var links = []

    for (var i in urls) {

      var url = urls[i]

      links += Concatenate(["<a href=", url, ">View Map</a>"])

      links += ""

    }

    return {

      type : 'text',

      text : links

    }

  }

}

[KenBuja · Accepted solution]

You are instantiating links as an array (line 6) but are using it as a string. Try this

    if ($feature.CLOSURE_MAP != ''){

      if ($feature.Map_URL != '') {

        var urls = Split($feature.Map_URL, ', ')
        var links;
        for (var i in urls) {
          var url = urls[i]
          links += Concatenate(["<a href=", url, ">View Map</a>"])
          links += ""
        }
        return {
          type : 'text',
          text : links
        }
      }
    }