There are a few ways to install Knockout.js, and each method is outlined here. Generally, you want to use the first or second method, but the third and fourth methods can be useful in some special cases.
You can manually download Knockout.js from the official site http://knockoutjs.com/. You can see the screen of the main page in the following screenshot:
After downloading, you can add a reference to Knockout.js from your HTML page using a
<script> tag. For example, if the library was downloaded to the root directory of your application, then you can use the following line of code: