Batch Update Managed MetaData in Sharepoint

Adding Data to New Managed MetaData Field

var Tower = [];
var Category = [];
var info = [];
var LoadDocData = [];
var exect=false;

$(document).ready(function () {

    var scriptbase = _spPageContextInfo.webServerRelativeUrl + "/_layouts/15/";

    $.getScript(scriptbase + "SP.Runtime.js",

    function () {

        $.getScript(scriptbase + "SP.js", function () {

            $.getScript(scriptbase + "SP.Taxonomy.js", function () {

                context = SP.ClientContext.get_current();

                //Call your code here.

                execOperation();

            });

        });

    });

});

function execOperation() {

    //Current Context
    var context = SP.ClientContext.get_current();

    //Current Taxonomy Session
    var taxSession = SP.Taxonomy.TaxonomySession.getTaxonomySession(context);

    //Term Stores
    var termStoreColl = taxSession.get_termStores();

    //Name of the Term Store from which to get the Terms.
    var termStoreT = termStoreColl.getByName("Managed Metadata Service");

    //GUID of Term Set from which to get the Terms.
    var termSetT = termStoreT.getTermSet("257bfe19-ff48-482f-bc22-72cd5f471320");

    var termsT = termSetT.getAllTerms();

    context.load(termsT);

    context.executeQueryAsync(function () {

        var termEnumerator = termsT.getEnumerator();

        var termList = "Terms: \n";

        while (termEnumerator.moveNext()) {

            var currentTerm = termEnumerator.get_current();

            termList += currentTerm.get_name() + "\n";

            var currentTermValue = currentTerm.get_pathOfTerm().split(';');

            var currentTermId = currentTerm.get_id().toString();

            if (currentTermValue.length == 1) {
                var temTower = {
                    Tower: currentTermValue[0],
                    TowerId: currentTermId
                };
                Tower.push(temTower);
            }
            else if (currentTermValue.length == 2) {

                var tempCat = {
                    Tower: currentTermValue[0],
                    Category: currentTermValue[1],
                    CategoryId: currentTermId
                }
                Category.push(tempCat);
            }
            else if (currentTermValue.length == 3) {
                var tempInfo = {
                    Tower: currentTermValue[0],
                    Category: currentTermValue[1],
                    info: currentTermValue[2],
                    infoId: currentTermId
                }
                info.push(tempInfo);

            }
        }

       

        console.log(termList);
    }, function (sender, args) {

        console.log(args.get_message());

    });

}
function CreateItem(){
  CreateListItems(Tower.length,Category.length, info.length,0);
  }
function CreateListItems(T,C,Inn,II) {



    var itemArray = [];

    var clientContextUpdate = SP.ClientContext.get_current();

    var oList = clientContextUpdate.get_web().get_lists().getByTitle('Create WSSID');
    var itemCreateInfo;
    var it = 0;
    for (var i = 0; i < T ; i++) {

        var itemCreateInfo = new SP.ListItemCreationInformation();
        this.oListItem = oList.addItem(itemCreateInfo);
        oListItem.set_item('Title', Tower[i].Tower);
        var field = oList.get_fields().getByInternalNameOrTitle("Tower");
        var taxField = clientContextUpdate.castTo(field, SP.Taxonomy.TaxonomyField);
        var taxonomySingle = new SP.Taxonomy.TaxonomyFieldValue();
        taxonomySingle.set_label(Tower[i].Tower);
        taxonomySingle.set_termGuid(Tower[i].TowerId);
        taxonomySingle.set_wssId(-1);
        taxField.setFieldValueByValue(oListItem, taxonomySingle);

        oListItem.update();
        itemArray[it] = oListItem;
        clientContextUpdate.load(itemArray[it]);

        it++;
    }
    for (var i = 0; i < C ; i++) {

        var itemCreateInfo = new SP.ListItemCreationInformation();
        this.oListItem = oList.addItem(itemCreateInfo);
        oListItem.set_item('Title', Category[i].Category);
        var field = oList.get_fields().getByInternalNameOrTitle("Category");
        var taxField = clientContextUpdate.castTo(field, SP.Taxonomy.TaxonomyField);
        var taxonomySingle = new SP.Taxonomy.TaxonomyFieldValue();
        taxonomySingle.set_label(Category[i].Category);
        taxonomySingle.set_termGuid(Category[i].CategoryId);
        taxonomySingle.set_wssId(-1);
        taxField.setFieldValueByValue(oListItem, taxonomySingle);

        oListItem.update();
        itemArray[it] = oListItem;
        clientContextUpdate.load(itemArray[it]);

        it++;
    }
    for (var i = II; i < Inn ; i++) {

        var itemCreateInfo = new SP.ListItemCreationInformation();
        this.oListItem = oList.addItem(itemCreateInfo);
        oListItem.set_item('Title', info[i].info);
        var field = oList.get_fields().getByInternalNameOrTitle("Info");
        var taxField = clientContextUpdate.castTo(field, SP.Taxonomy.TaxonomyField);
        var taxonomySingle = new SP.Taxonomy.TaxonomyFieldValue();
        taxonomySingle.set_label(info[i].info);
        taxonomySingle.set_termGuid(info[i].infoId);
        taxonomySingle.set_wssId(-1);
        taxField.setFieldValueByValue(oListItem, taxonomySingle);

        oListItem.update();
        itemArray[it] = oListItem;
        clientContextUpdate.load(itemArray[it]);

        it++;
    }


    clientContextUpdate.executeQueryAsync(onQuerySucceeded, onQueryFailed);

}



function onQuerySucceeded() {


    alert('Items Updated');

}



function onQueryFailed(sender, args) {



    alert('Request failed. ' + args.get_message() + '\n' + args.get_stackTrace());


}