title	conference	date
What’s new in Puppeteer	web.dev LIVE 2020	2020-06-30
Puppeteer is a Node.js browser-automation library that now exposes programmatic APIs to emulate light/dark mode, override time zones, and simulate vision… Talk on
What’s new in JavaScript	Google I/O 2019	2019-05-07
Chrome/V8 claims concrete wins: raw JS parsing is doubled since Chrome 61, with 40% of parsing moved off the main thread; promises run up to 11× faster… Talk on
JavaScript Engines: The Good Parts™	JSConf EU 2018	2018-06-02
Modern engines V8, ChakraCore, SpiderMonkey and JSC are compared by concrete internals: V8 uses Ignition plus a tiered optimiser, ChakraCore and others use… Talk on
V8 internals for JavaScript developers	JSConf AU 2018	2018-04-10
Explains how V8 classifies arrays into packed vs holy arrays, how element kinds transition only downward (SMI → double → object) and how single values like -0… Talk on
V8 internals for JS developers	JSHeroes 2018	2018-04-10
Shows that small, concrete V8 facts change choices: arrays have element kinds like packed SMI elements vs holey double elements, transitions only go downward… Talk on
JavaScript engine internals for JavaScript developers	Smashing Conference London 2018	2018-02-07
This presentation demonstrates how learning just a little bit about JavaScript engine internals can help you improve the run-time performance of your… Talk on
V8 Internals for JS Developers	NodeConf Argentina 2017	2017-10-26
V8 exposes about twenty distinct elements kinds and the talk shows how arrays transition irreversibly from specific (SMI) to general (double, object) formats… Talk on
RegExp.prototype.unicode	NodeConf Argentina 2016	2016-11-17
User input and string manipulation are central to development, but many engineers and even popular libraries struggle with Unicode. And ECMAScript 5 doesn’t… Talk on
Front-End Performance - The Dark Side	ColdFront16	2016-09-01
Shows concrete exploits: string equality timing differences (100µs vs 1,000µs) leak secrets and require a constant-time compare to fix; combines fetch +… Talk on
Javascript ♥ Unicode	Frontend United 2016	2016-05-27
JavaScript treats many Unicode code points as two UTF‑16 surrogates, so string.length and character-at semantics are misleading (a pile of poo counts as length… Talk on
Hacking with Unicode in 2016	RuhrSec 2016	2016-04-28
Unicode has ~1.1M code points (up to 0x10FFFF) split into a 65k BMP and astral planes, and this causes concrete bugs: JavaScript counts astral symbols as two… Talk on
3.14 Things You Didn't Know About CSS (Updated)	CSSConf.Asia 2015	2015-11-18
Shows concrete tricks and risks: demos that actually run—CSS expressions executing JS in old IE, a proof‑of‑concept that leaks attributes by brute‑force CSS… Talk on
3.14 things I didn't know about CSS	DevFest Nantes 2015	2015-11-06
Shows concrete surprises and exploits: how to fake importance by repeating classes, when font-family needs quotes and when it doesn’t, HTML vs CSS rules for… Talk on
RegExp.prototype.unicode	JSFoo 2015	2015-09-18
ES6 adds a U flag that actually changes RegExp behavior: it enables Unicode code point escapes, makes dot and quantifiers treat astral code points as single… Talk on
JavaScript ♥ Unicode	JSConf EU 2014	2014-09-13
JavaScript stores characters as UCS‑2/UTF‑16 so many emoji and astral code points become surrogate pairs and break length, reverse and regex logic — a real bug… Talk on
3.14 Things I Didn't Know About CSS	CSSconf EU 2014	2014-09-12
Shows concrete surprises and working demos: replicating !important by repeating a class, faking single-line comments by sending invalid property names, and… Talk on
3.14 things I didn’t know about CSS	CSS Day 2014	2014-06-04
Shows concrete surprises: CSS expressions let JavaScript run from CSS (IE5–7) and can be re-enabled via compatibility mode and framing, enabling XSS using only… Talk on
Speaker Panel	CSS Day 2014	2014-06-04
A live Q&A lists concrete wins and roadblocks: shadow DOM isolates styles so scoped styles are less necessary; web components are shipping and used as the… Panel on
10 Things I Didn't Know About HTML	Kod.io 2014	2014-03-01
Shows that legacy color parsing is standardized in HTML5 and demonstrates a web tool that maps arbitrary words to the exact browser color, explains validators… Talk on
Ten things I didn't know about HTML	ArrrrCamp 2013	2013-10-03
Browsers parse legacy color strings per the HTML5 spec so weird inputs like names or omitted # yield deterministic hex colors; semicolons in entities are… Talk on
Unicode in JavaScript	Wildcard Conference 2013	2013-09-13
JavaScript represents astral Unicode as surrogate pairs, so many symbols (emoji, math alphas, pile of poo) consume two code units and string.length counts… Talk on
Unicode in JavaScript	dotJS 2012	2012-11-30
JavaScript strings use UTF-16 so many emoji and math letters live outside the BMP, creating surrogate pairs that make "length" return two for one visible… Talk on
Using jsPerf correctly	JSConf EU 2011	2011-10-01
jsPerf shows about 68% broken tests and adds roughly 57 new test cases per day, so expect noise not answers. Benchmarks rely on Benchmark.js and BrowserScope… Talk on
nothing matches

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