Photoshop Script: Save as JPG with current DATE and TIME

Hi,

Try following code, you may need to change the time format little bit but this will helpy you.

function exportToJPEG() {
    var docName = app.activeDocument.name.split('.')[0];

    var dateObj = new Date();
    var year = dateObj.getFullYear().toString().substr(-2);
    var month = ("0" + (dateObj.getMonth() + 1)).slice(-2); 
    var date = ("0" + dateObj.getDate()).slice(-2);
    var time = dateObj.getTime();
    var hours = dateObj.getHours()
    var minutes= dateObj.getMinutes();
    var seconds = dateObj.getSeconds();
    var completeTime = hours.toString()+ minutes.toString()+ seconds.toString();
    var completeDate = year.toString() + month.toString() + date.toString();

    var fileName = app.activeDocument.path + "/" + "MN-" + completeDate + "-" + docName + "-" + completeTime + ".jpeg";
    var idsave = stringIDToTypeID("save");
    var desc5 = new ActionDescriptor();
    var idas = stringIDToTypeID("as");
    var desc6 = new ActionDescriptor();
    var idextendedQuality = stringIDToTypeID("extendedQuality");
    desc6.putInteger(idextendedQuality, 12);
    var idscans = stringIDToTypeID("scans");
    desc6.putInteger(idscans, 5);
    var idmatteColor = stringIDToTypeID("matteColor");
    var idmatteColor = stringIDToTypeID("matteColor");
    var idnone = stringIDToTypeID("none");
    desc6.putEnumerated(idmatteColor, idmatteColor, idnone);
    var idJPEG = stringIDToTypeID("JPEG");
    desc5.putObject(idas, idJPEG, desc6);
    var idin = stringIDToTypeID("in");
    desc5.putPath(idin, new File(fileName));
    var iddocumentID = stringIDToTypeID("documentID");
    desc5.putInteger(iddocumentID, 219);
    var idlowerCase = stringIDToTypeID("lowerCase");
    desc5.putBoolean(idlowerCase, true);
    var idsaveStage = stringIDToTypeID("saveStage");
    var idsaveStageType = stringIDToTypeID("saveStageType");
    var idsaveSucceeded = stringIDToTypeID("saveSucceeded");
    desc5.putEnumerated(idsaveStage, idsaveStageType, idsaveSucceeded);
    executeAction(idsave, desc5, DialogModes.NO);
}

exportToJPEG();

Let us know if this helps you.

Thanks