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#2 - Add Item Groups To Member JSON v0.1

Allow members to add nested items/groups to their Member JSON.

Need help with this MemberScript?

All Memberstack customers can ask for assistance in the 2.0 Slack. Please note that these are not official features and support cannot be guaranteed.

View demo

document.addEventListener("DOMContentLoaded", function() {
  const msCodeForm2 = document.querySelector('[ms-code="form2"]');
  const jsonList = msCodeForm2.getAttribute("ms-code-json-list");

  msCodeForm2.addEventListener('submit', async function(event) {
    event.preventDefault(); // Prevent the default form submission

    // Retrieve the current member JSON data
    const memberstack = window.$memberstackDom;
    const member = await memberstack.getMemberJSON();

    // Create a new member.data object if it doesn't already exist
    if (!member.data) {
      member.data = {};

    // Check if the friends group already exists
    if (!member.data[jsonList]) {
      // Create a new friends group object
      member.data[jsonList] = {};

    // Retrieve the input values for creating the subgroup
    const inputs = msCodeForm2.querySelectorAll('[ms-code-json-name]');
    const subgroup = {};
    inputs.forEach(input => {
      const jsonName = input.getAttribute('ms-code-json-name');
      const newItem = input.value;
      subgroup[jsonName] = newItem;

    // Generate a unique key for the new subgroup prefixed with the main group name
    const timestamp = Date.now();
    const subgroupKey = `${jsonList}-${timestamp}`;

    // Create the new subgroup within the friends group
    member.data[jsonList][subgroupKey] = subgroup;

    // Update the member JSON with the new data
    await memberstack.updateMemberJSON({
      json: member.data

    // Log a message to the console
    console.log(`New subgroup with key ${subgroupKey} has been created within ${jsonList} group.`);

    // Reset the input values
    inputs.forEach(input => {
      input.value = "";
JSON Form | Save as New Item
Save all form values as a new item in a JSON list.

Creating the Make.com Scenario

1. Download the JSON blueprint below to get stated.

2. Navigate to Make.com and Create a New Scenario...

3. Click the small box with 3 dots and then Import Blueprint...

4. Upload your file and voila! You're ready to link your own accounts.