- Dash: API Documentation Browser
- The Web platform: https://platform.html5.org/
- W3C Technical Reports: https://www.w3.org/TR/
- MDN(Mozilla Developer Network): https://developer.mozilla.org/en-US/
- Web Platform Docs: https://docs.webplatform.org/
- W3Schools: http://www.w3schools.com/
- W3CBUS: http://www.w3cbus.com/docs
- W3school: http://www.w3school.com.cn/
- Can I use: http://caniuse.com/
- WHATWG: https://whatwg.org/
- HTML Elements Index: http://meiert.com/en/indices/html-elements/
- CSS Properties Index: http://meiert.com/en/indices/css-properties/
- CSS Working Group Editor Drafts: https://drafts.csswg.org/
- CSS 2.2: https://www.w3.org/TR/CSS22/
- CSS Snapshot 2015: https://www.w3.org/TR/css-2015/
- Selectors Level 4: https://www.w3.org/TR/selectors4/
- CSS Cascading and Inheritance Level 4: https://www.w3.org/TR/css-cascade-4/
- API: http://api.jquery.com/
- You Might Not Need jQuery: http://youmightnotneedjquery.com/
- You Don't Need jQuery: https://github.com/oneuijs/You-Dont-Need-jQuery.
- jQuery source viewer: http://james.padolsey.com/jquery/
- ECMAScript: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Language_Resourc
- ECMAScript 2015 (ES 6): http://www.ecma-international.org/ecma-262/6.0/
- ECMAScript 2016 (ES 7): https://tc39.github.io/ecma262/2016/
- ECMAScript 6入门: http://es6.ruanyifeng.com/