Programmability in Jade
Jade is not just about static tags and contents. Especially being a templating language, it is expected of Jade to support variables, interpolation, and various programming capabilities.
In this section, we will explore the various programmable aspects of Jade.
Note
Even though Jade provides programming capability, it is primarily a template engine; hence it is recommended to minimize programming in the view files.
Variables
Variables in a Jade file can come from the app.locals object, the res.locals object, the
res.render() method, or can be defined right in the view file.
Any variable defined in the app.globals object will be available to all the views of the app. Variables defined in the app.res.globals object will be available to the view rendering the response.
Variables from res.render() are passed to a Jade template as the second parameter of res.render(), as key-value pairs of an object.
In the very first example of this chapter, we had a route handler that passed...
