One-Way Client/Server UI Action

Form + List Compatible Template

function demoOnClick() {
    // CLIENT-SIDE CODE GOES HERE

    // DATA STORAGE
    var responseData = JSON.stringify(null); // Replace null with real data
    if (typeof g_list !== 'undefined' && g_list) {
        g_list.filter = responseData;
        return g_list.action(undefined, 'sysverb_XXX');
    } else {
        addHidden(
            g_form.getFormElement(),
            'sysparm_XXX',
            responseData
        );
        return g_form.submit('sysverb_XXX');
    }
}

if (typeof window === 'undefined') {
    // DATA ACCESS
    var rawData = null;
    var uri = action.getGlideURI();
    var formEmbed = uri.get('sysparm_XXX');
    if (gs.nil(formEmbed)) {
        var listEmbed = uri.get('sysparm_query');
        rawData = listEmbed;
    } else {
        rawData = formEmbed;
    }
    var data = gs.nil(rawData) ? null : JSON.parse(rawData);

    // SERVER-SIDE CODE STARTS HERE
}

Form Compatible Template

function demoOnClick() {
    // CLIENT-SIDE CODE GOES HERE

    // DATA STORAGE
    var responseData = JSON.stringify(null); // Replace null with real data
    addHidden(
        g_form.getFormElement(),
        'sysparm_XXX',
        responseData
    );
    return g_form.submit('sysverb_XXX');
}

if (typeof window === 'undefined') {
    // DATA ACCESS
    var uri = action.getGlideURI();
    var rawData = uri.get('sysparm_XXX');
    var data = gs.nil(rawData) ? null : JSON.parse(rawData);

    // SERVER-SIDE CODE STARTS HERE
}

List Compatible Template

function demoOnClick() {
    // CLIENT-SIDE CODE GOES HERE

    // DATA STORAGE
    var responseData = JSON.stringify(null); // Replace null with real data
    g_list.filter = responseData;
    return g_list.action(undefined, 'sysverb_XXX');
}

if (typeof window === 'undefined') {
    // DATA ACCESS
    var rawData = uri.get('sysparm_query');
    var data = gs.nil(rawData) ? null : JSON.parse(rawData);

    // SERVER-SIDE CODE STARTS HERE
}