Add an item into SharePoint List using Javascript

Below code is used to add list item into the SharePoint list using Javascript,



var FeedbackClientContext;
var FeedbackWebsite;
var FeedbackCurrentUser;
var FeedbackList;
 

function AddFeedbackValue()
{
var FeedbackNoteValue= $.trim($("#txtFeedback").val()); // txtFeedback name of the text box html field
if(FeedbackNoteValue.length > 0)
{
FeedbackClientContext = new SP.ClientContext("/");
   FeedbackWebsite = FeedbackClientContext.get_web();
FeedbackList = FeedbackWebsite.get_lists().getByTitle('Feedback'); // name of the SharePoint list
var FeedbackListItemCreInfo = new SP.ListItemCreationInformation();
   var FeedbackNewItem = FeedbackList.addItem(FeedbackListItemCreInfo);
   FeedbackNewItem.set_item('Feedback',FeedbackNoteValue);
   FeedbackNewItem.update();

   FeedbackClientContext.executeQueryAsync(Function.createDelegate(this, this.onFeedbackQuerySucceeded),
    Function.createDelegate(this, this.onFeedbackQueryFailed));
    }      
}

function onFeedbackQuerySucceeded(sender, args) {
$("#txtFeedback").val('');
}

function onFeedbackQueryFailed(sender, args) {
    alert('Request failed. ' + args.get_message() + '\n' + args.get_stackTrace());
}

Thanks,

-Sendil