Code points usually represent a single grapheme usually a letter, digit, punctuation mark, or whitespacebut sometimes represent symbols, control characters, or formatting. We’ve already covered template literals earlier in the series, and you may recall that those can be used to mix strings and variables to produce string output. In character encoding terminology, a code point, codepoint or code position is a numerical value that maps to a specific character. Thanks for reading that, and let’s go into updates to the String object. In order to inspect the actual code points in UTF-16 encoded JavaScript, we need to build a separate utility that knows the difference between code units. Your contributions will go towards helping me keep up with the schedule, server bills, keeping me fed, and maintaining Pony Foo as a veritable source of JavaScript goodies. Sintaxis str.codePointAt (indice) Parmetros indice ndice del carcter en la cadena del que se quiere obtener el valor del Unicode code point. Another alternative that’s also quite useful is to use Babel’s online REPL – it’ll show you compiled ES5 code to the right of your ES6 code for quick comparison.īefore getting into it, let me shamelessly ask for your support if you’re enjoying my ES6 in Depth series. El mtodo codePointAt () devuelve un entero no negativo que equivale al valor Unicode code point del carcter. If you aren’t the “install things on my computer” kind of human, you might prefer to hop on CodePen and then click on the gear icon for JavaScript – they have a Babel preprocessor which makes trying out ES6 a breeze. That’ll make it so much easier for you to internalize the concepts discussed in the series. Like I did in previous articles on the series, I would love to point out that you should probably set up Babel and follow along the examples with either a REPL or the babel-node CLI and a file. Today we’ll be serving updates to the String object coming in ES6. Then, make your way through destructuring, template literals, arrow functions, the spread operator and rest parameters, improvements coming to object literals, the new classes sugar on top of prototypes, let, const, and the “Temporal Dead Zone”, iterators, generators, Symbols, Maps, WeakMaps, Sets, and WeakSets, proxies, proxy traps, more proxy traps, reflection, Number, Math, Array, and Object. If you’ve never been around here before, start with A Brief History of ES6 Tooling. Probably the most important concept about Unicode in JavaScript is to treat strings as sequences of code units, as they really are. Here’s another edition of ES6 – “I can’t believe they killed off Stringer Bell” – in Depth series.
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