export image with name by its layer

generated.js

function Main() {

    var num = 1;

    for (var j = 0; j < app.activeDocument.layerSets[0].layers.length; j++) {
        for (var k = 0; k < app.activeDocument.layerSets[1].layers.length; k++) {
            for (var l = 0; l < app.activeDocument.layerSets[2].layers.length; l++) {

                var groupChildArr1 = app.activeDocument.layerSets[0].layers;
                var groupChildArr2 = app.activeDocument.layerSets[1].layers;
                var groupChildArr3 = app.activeDocument.layerSets[2].layers;

                app.activeDocument.layerSets[0].visible = true;
                app.activeDocument.layerSets[1].visible = true;
                app.activeDocument.layerSets[2].visible = true;

                groupChildArr1[j].visible = true;
                groupChildArr2[k].visible = true;
                groupChildArr3[l].visible = true;

                var name = groupChildArr1[j].name + "_" + groupChildArr2[k].name + "_" + groupChildArr3[l].name;

                Save(name);
                Revert();
            }
        }
    }

}

function Save(name) {
    var outFolder = app.activeDocument; // psd name
    var outPath = outFolder.path;
    var fName = "PNG";   // define folder name
    var f = new Folder(outPath + "/" + fName);
    if (!f.exists) {
        f.create()
    }
    var saveFile = new File(outPath + "/" + fName + "/" + name + ".png");
    pngSaveOptions = new PNGSaveOptions();
    pngSaveOptions.interlaced = false;
    app.activeDocument.saveAs(saveFile, pngSaveOptions, true, Extension.LOWERCASE);
}

function Revert() {
    var idRvrt = charIDToTypeID("Rvrt");
    executeAction(idRvrt, undefined, DialogModes.NO);
}

Main()