code: function getUniqueId(baseId) {
    if (!document.getElementById(baseId)) {
      return baseId;
    }
  
    var i = 2;
    // If the baseId ends with _#, it extracts the baseId removing the suffix
    var groups = baseId.match(/(\w+)-(\d+)/);
    if (groups) {
      baseId = groups[1];
      i = groups[2];
    }
  
    while (document.getElementById(baseId + '-' + i)) {
      i++;
    }
  
    return baseId + '-' + i;
  }
docs: Detect element's Id collision and returns a valid one
  @param  {string} baseId Proposed Id
  @return {string}        Valid Id based on the proposed Id