To use the Web Font Loader library, just include it in your page and tell it which fonts to load. For example, you could load fonts from Google Fonts using the Web Font Loader hosted on Google Hosted Libraries using the following code. Alternatively, you can link to the latest 1.

You can use npm to install the fontfaceobserver module. Font Face Observer is also available on Bower and installable through jspm. You can then load the module by requiring it in your code. var FontFaceObserver = require('fontfaceobserver');