代码未执行完整脚本

Question

I wrote some code that checks a list, and checks if each item in the list is present in the other one. If the item isn't found, it adds it to the database.

The scanning code is correct (the part that says db.scan) but somewhere towards the end the code isn't going through because its not executing the console.log part (Where it says "Entering journal into database..." title of article " When I execute this code, nothing happens. At least there are no errors... but its not even logging the console.log parts so something is wrong.

// accessing the database
function DatabaseTime(sourcesDates, timeAdded, links, titles, descriptions) {
    sourcesDates = sourcesDates;
    links = links;
    titles = titles;     //  this will be used to check on our articles
    descriptions = descriptions;

    var autoParams;
    var databaseOperation = function (sourcesDates, timeAdded, links, titles, descriptions) {
        var scanParams = { TableName: "Rnews" }
            // using code to setup for accessing the 2nd list
            db.scan(scanParams, function(err, scanData) {   // scanData = the 2nd list we are going to work with
                var counter = 0;    // just a way to help make my code more accurate as seen later in the loops
                var counter2 = 0;
                // this is the first list iterating on
                for (var i = 0; i < links.length; i++) {
                    counter = 0;
                    // looping through items in second list
                    for (var x = 0; x < scanData.Items.length; x++) {
                        // if article is not in db
                        if (titles[i] !== scanData.Items[x].title) {
                            continue; 
                        } 
                        else if (titles[i] === scanData.Items[x].title) {
                            // intention is to immediately move to the next item in the first list if this block executes
                            console.log("Article found: \"" + titles[i] + "\". Not proceeding anymore with article.");
                            counter++;
                            break;
                        } else {
                            //  if this article isnt found anywhere in the list we are checking on, add to database
                            if (x === scanData.Items.length && counter !== 0) {
                                autoParams = {
                                    TableName: "Rnews",
                                    Item: {
                                        title: titles[i],
                                        source: sourcesDates[i],
                                        url: links[i],
                                        description: descriptions[i],
                                        lastAddOrUpdated: dbTimeStamp,
                                        timePublish: timeAdded[i]
                                    }
                                }
                                console.log("Entering journal to database: " + titles[i]);
                                db.put(autoParams, function(err, data) {
                                    if(err) throw err;
                                });
                            //}
                        }
                    }
                }
            }
            });
        //console.log("Complete");
    };
    databaseOperation(sourcesDates, timeAdded, links, titles, descriptions);
}
//// END

Answer 1

You never called the function DatabaseTime . Your code just declares the function and does nothing else. In order for the function to execute, you must invoke it.