Trying to Parse the JSON file from API call (HTTPGet) but ParseJSON function in SSJS doesnt work

Question

I want to get attribute sets for an attribute group. So before I used an API call just for the attribute groups. And it worked. For this I make the API GET call and it is successful but I can not parse it. If I just put the response.content in a write function it displays but when I add the ParseJSON function I get the try catch block error. The JSON file is a bit large and for this code I get "invalid length" error.

1. This is the code.

    <script runat="server">
    Platform.Load("Core", "1");
    try {
    var authEndpoint = 
    'https://mcx3g81x4fmdkj05rbw0jg9yb19m.auth.marketingcloudapis.com/';
    var payload = {
    client_id: "xxxxxxxxxxxxxxxxxx",
    client_secret: "xxxxxxxxxxxxxx",
    grant_type: "client_credentials" ,
    account_id: "xxxxxxxx"};
    var url = authEndpoint + '/v2/token'
    var contentType = 'application/json'
   
   
   
    var accessTokenRequest = HTTP.Post(url, contentType, 
    Stringify(payload));
    //Write(accessTokenRequest.StatusCode);
    if (accessTokenRequest.StatusCode == 200) {
    var tokenResponse = 
    Platform.Function.ParseJSON(accessTokenRequest.Response[0]);
    var accessToken = tokenResponse.access_token
    var rest_instance_url = tokenResponse.rest_instance_url};
    var auth = 'Bearer ' + accessToken;
   
    var output = [];
    var page = 1;
    var pageSize = 50;
    var requestUrl = rest_instance_url + 
    "/contacts/v1/attributeSetDefinitions?$page=" + page + "&$pageSize" 
    + pageSize;
   
   
    var req = new Script.Util.HttpRequest(requestUrl);
    req.emptyContentHandling = 0;
    req.retries = 2;
    req.continueOnError = true;
    req.contentType = "application/json"
    req.setHeader("Authorization",auth );
    req.method = "GET";
    req.encoding= "UTF-8"
   
   
   
   var resp = req.send();
   //Write(String(resp.content))
   var result = String(resp.content)
   var obj = Platform.Function.ParseJSON(result);
   Write(obj.items)
   
   
   
   
   
   
   // Check the response code
   if(resp.statusCode == 200) {
   
   
   //var obj = Platform.Function.ParseJSON(String(resp.content))
   
   
   
   
   }
   
   
   
   } catch (error) {
   Write("ERRORBIG"+error);
   }
   </script>
   

Answer 1

ParseJSON - Parses the supplied string or array value and returns a object from that value. This function will not execute functions within the supplied values. Try writing string function separately.