How do I select more than 1 framework with jsFiddle?
You can only assign one framework via the dropdown in the sidebar. If you need to add another framework you need to add a resource using a link to a CDN.
Use this to add another framework. Sample showing knockout cdn
$.getScript("//cdnjs.cloudflare.com/ajax/libs/knockout/2.2.1/knockout-min.js", function(){
/* Lines of code */
});