Creating Page-Specific CSS/JS ============================= If you're creating a single page app (SPA), then you probably only need to define *one* entry in ``webpack.config.js``. But if you have multiple pages, you might want page-specific CSS and JavaScript. To learn how to set this up, see the :ref:`multiple-javascript-entries` example. Multiple Entries Per Page? -------------------------- Typically, you should include only *one* JavaScript entry per page. Think of the checkout page as its own "app", where ``checkout.js`` includes all the functionality you need. However, it's pretty common to need to include some global JavaScript and CSS on every page. For that reason, it usually makes sense to have one entry (e.g. ``app``) that contains this global code (both JavaScript & CSS) and is included on every page (i.e. it's included in the *layout* of your app). This means that you will always have one, global entry on every page (e.g. ``app``) and you *may* have one page-specific JavaScript and CSS file from a page-specific entry (e.g. ``checkout``). .. tip:: Be sure to use :doc:`split chunks ` to avoid duplicating and shared code between your entry files.