How to get recently uploaded zip file from s3 bucket when we trigger the lambda using node js

I am uploading a zip file to s3 bucket,Once I uploaded the zip file,my lambda Function will get triggered.

Inside the Function block,Then I need to get the recently uploaded zip file name either based on Last Modified date of S3 object or Object Creation date from Lambda record event

However it may be ,But I need to get recently uploaded zip file name from s3 bucket.**

This is my code

s3.listObjects(params, function (err, data) {
    if (err)
        console.log(err, err.stack); // an error occurred


    var lastZipfile = null;
    var lastModified = null;
    data.Contents.forEach(function (c) {
        if (c.Key.endsWith('tar.gz')) {
            if (lastModified === null) {
                lastZipfile = c.Key;
                lastModified = c.LastModified;
            } else {
                // Compare the last modified dates
                if (lastModified <= c.LastModified) {
                    // Track the new latest file
                    lastZipfile = c.Key;
                    lastModified = c.LastModified;
                    //extractData(lastZipfile);
                }
            }
        }

    });
});

via vishnu