Error updating List Items

Question

I have found this code to perform batch update

function updateListItems() {

    var itemArray = [];
    var clientContext = SP.ClientContext.get_current();
    var oList = clientContext.get_web().get_lists().getByTitle('TestList');


    for(var i = 1; i<= 5; i++){

        var oListItem = oList.getItemById(i);  
        oListItem.set_item('Title', 'My Updated Item!' + i);  
        oListItem.update();
        itemArray[i] = oListItem;
        clientContext.load(itemArray[i]);
    }

    clientContext.executeQueryAsync(onQuerySucceeded, onQueryFailed);
}

function onQuerySucceeded() {

    alert('Items Updated');
}

function onQueryFailed(sender, args) {

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

But I am getting the following error :

The property or field has not been initialized. It has not been requested or the request has not been executed. It may need to be explicitly requested.

I need to update a various item in the list without iterating it.

Please Help!!

Answer 1

Should you check this code

Create a new function and rename it as bulkupdate

Function BulkUpdate()
{

for(var i = 1; i<= 5; i++){ 
updateListItem(int i);
}

}
}


    var siteUrl = '/sites/MySiteCollection';

    function updateListItem(int i) {

        var clientContext = new SP.ClientContext(siteUrl);
        var oList = clientContext.get_web().get_lists().getByTitle('Announcements');


 this.oListItem = oList.getItemById(i);

        oListItem.set_item('Title', 'My Updated Title');

        oListItem.update();

        clientContext.executeQueryAsync(Function.createDelegate(this, this.onQuerySucceeded), Function.createDelegate(this, this.onQueryFailed));
    }

    function onQuerySucceeded() {

        alert('Item updated!');
    }

    function onQueryFailed(sender, args) {

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