Amazon Web Services Delete item on DynamoDB Database from Lambda Function

Question

How can I delete an item from a DynamoDB database from a Lambda function. I know how to put and item. Here is working code:

dynamo.putItem({
            "TableName": "Table",
            "Item": item
        }, function(err, data) {
            if (err) {
                console.log("Failure: " + err);
                context.succeed("Failure!");
                context.done();
            } else {
                console.log("Success!");
                context.succeed("Success!");
                context.done();
            }
        });

Answer 1

Omitting the Lambda boilerplate

     var tablename= "Users"

dynamodb.deleteItem({

"TableName": tableName

"Key": {

         "UserId"=event.UserId

      }

}, function (err, data) {

if (err) {

            context.fail('FAIL': Error deleting item from dynamodb', +err);

}

else {

        console.log("DEBUG: deleteItem worked.");

        context.succeed(data);

     }

}