上QQ阅读APP看书，第一时间看更新

Vue, a jQuery successor

The famous jQuery library appeared in 2006. When it came out, it did a few things beautifully:

It made writing cross-browser JavaScript a lot easier, which was a big plus at the time since it dramatically decreased the need for developers to mess with various browsers' quirks and inconsistencies
It had a simple syntax that made it easier to target and manipulate specific DOM nodes, which is beautifully phrased in their motto write less, do more
It was an excellent entry point to learning JavaScript in general
It had a great API that made working with Ajax simple and easy

However, a lot has changed since then—for the better.

Arguably, the biggest improvement that happened in JavaScript-land between 2006 and today is the virtual DOM.

The virtual DOM was a paradigm shift: we no longer had to write procedural, spaghetti JS to instruct the browser on how to traverse and manipulate the DOM. Instead of telling the browser how to update the DOM, we can now simply tell it what to update. Or, to be more specific, we tell a framework what to update—a framework like View or React. The actual implementation of the virtual DOM is framework-specific and not really something to be concerned with at this point.

We can now work with the DOM indirectly, by using declarative code that deals with the virtual DOM implementation of the underlying framework. This abstraction is the one thing that more or less made jQuery redundant.

Of course, since so many apps are still powered by jQuery and since legacy code has a tendency to stick around, jQuery will be alive and well in the years to come.

However, the paradigm shift in the way we think about DOM manipulation makes Vue a strong contender to jQuery's throne as the most popular game in town.

Vue also has other advantages: it is an excellent starting point to learn present-day frontend development. The barrier to entry is really low.

本周热推：

物联网识别技术网络故障现场处理实践（第4版）广电5G从入门到精通物联网导论电力物联网工程技术原理与应用