JAVASCRIPT

Express.js View "globals"

// In your app.js etc.
app.locals.title = "My App";
app.locals({
    version: 3,
    somefunction: function() {
        return "function result";
    }
});

// Then in your templates (shown here using a jade template)

=title
=version
=somefunction()  

// Will output

My App
3
function result

Express.js View "globals"

app.use(function(req, res, next) {
    app.set('error', req.flash('error'));
    next();
});

Express.js View "globals"

app.locals.version = 3;
app.locals.somefunction = function() {
    return "function result";
}

Express.js View "globals"

res.locals.user = req.isAuthenticated() ? req.user : null;
res.locals.userSettings = {
    backgroundColor: 'fff'
}