dynamic id for collapse panels

dynamicid.js

 // dynamic id and href generation
      function buildidtree() {
        var count = 0;
        
        var elements = document.querySelectorAll(".add-sub-agenda");
        var createnewagenda = document.querySelectorAll(".createnewagenda");
        
        var id = [];
        
        var href = [];
        
        for(i = 0; i < elements.length; i++) {
          var idvalue = id.push(elements[i].getAttribute('id') + count++);
          elements[i].id = idvalue;
        }
        
        for(j = 0; j < elements.length; j++) {
          var hrefvalue = href.push(createnewagenda[j].getAttribute("href") + count++);
          createnewagenda[j].href = "#" + hrefvalue;
        }
        
      }

      buildidtree();