Time spent on learning frameworks is mostly wasted. Except when there is an interesting concept behind. In 3-5 years things like web components will be mature e

Time spent on learning frameworks is mostly wasted. Except when there is an interesting concept behind. In 3-5 years things like web components will be mature enough so it may be worth to learn/use from now. Having a strong understanding of JavaScript, CSS, SVG/Canvas/WebGL will be much more valuable than learning a framework api.