`register` but for single page load?

[raycohen]

I want to add some common properties to all uses of mixpanel.track that occur on a single page.

The API provided by mixpanel.register is close to this but additionally sets a cookie so these properties are retained across all pages.

Is there any way to have this behavior but without the impact lasting beyond the life of that one page?

[tdumitrescu]

There's nothing built into the SDK at the moment for this functionality. The feature seems totally reasonable and within the scope of the lib; we'd be happy to look at a Pull Request!

[tonyjmnz]

Me and @rcohen were going through the lib and we were thinking about something like this:

Based off MixpanelPersistence.prototype.register

MixpanelPersistence.prototype.register_page_lifespan = function(props) {
    if (_.isObject(props)) {
        // no expiration checking since we aren't persisting
        // this.expire_days = (typeof(days) === 'undefined') ? this.default_expiry : days;

        _.extend(this['props'], props);

        // don't persist since we want it to be cleared on page navigation/refresh
        // this.save();

        return true;
    }
    return false;
};

I think this would add it to all subsequent calls and would be cleared on navigation, but wanted some feedback before I get that PR in