Among the JavaScript skills in decline, jQuery has fallen 30% since 2015, while Ajax is down even more -- 54%. Backbone.js has also seen its appearance in job postings drop significantly since 2014.

We traditionally think of JavaScript libraries and frameworks as running in browsers. As I mentioned earlier, some of these — jQuery, Dojo, and MooTools — arose in the mid-2000s primarily to ...

JavaScript is moving in two directions at once, favoring both comprehensive, full-stack frameworks and greater simplicity. Sometimes these trends are harmonious, and at other times they are at odds.