How to change some parts of html when building a template?

Question

Building projects

I'm building a project with `gulp'a`, let's say I'm making a multipage, I use the `gulp-rigger` plugin, its essence is that it allows you to connect any parts of the template, you can do the same with `PHP`. Let's say we have a repeating header, we can connect it to all pages and after assembly, this piece will simply be inserted into the main `html` document. The problem is that if I have navigation in the header, and I need to highlight a certain active item on the page, how can I solve this? That is, I will have a class that defines the active part, and I must set it to menu items depending on the page.