Ecmascript 6 support. Nullish Coalescing (??) (since Qt 5.

Ecmascript 6 support. We use a variety of browsers to run our applications, including Chrome, Firefox, Internet Explorer, Microsoft Edge, Opera, and UC Browser. js will support these modules out of the box, in the near future? Jun 1, 2015 · Since the article Start writing ECMAScript 6 ready code with Codeanywhere on our blog gained significant interest we decided to write more on writing ECMAScript 6 ready code. If that object is identified that means ECMA Version supported into the browser. 5 Other Properties of the Global Object 15. Pick browsers to display Apr 26, 2010 · IE's implementation of ECMAScript is called “JScript”, and it does not support many of the extensions Mozilla have made. url) JavaScript / ECMAScript JavaScript was invented by Brendan Eich in 1995. (Identical to ES5). Flow: This version adds support for the Flow syntax. es2017 - adds all ECMAScript 2017 globals and automatically sets the ecmaVersion parser option to 8. prototype (String. Today's modern browsers are all updated regularly and do very well with supporting the latest version of JavaScript (ECMAScript). Browser Support ECMAScript 2020 is supported in all modern browsers since April 2021. This version was included in Firefox 1. Latest version: 0. Classes provide a more structured and object-oriented way to define and work with objects and prototypes in JavaScript. Use => everywhere else. Allows me to support staged esnext features and combined with the browserslist project I can cherry pick the browsers I need to support. Then it transforms your code as down as possible & needed in terms of a set of ECMA features whose emulative implementations are defined by presets (groups of plugins, let's say preset-env). At the moment Node. Then we can see through these tests when other browsers are implementing and so when they can be used in production. FLOW OF COMPILATION JavaScript is the language that the browser understands. The for-of loop 17. Apr 29, 2024 · This article gives you an overview of the evolution of ECMAScript versions and their relationship with TypeScript, Angular, and Node. From the list, choose one of the supported JavaScript language versions: ECMAScript 5. . 1 Web Scripting 4. Understanding these versions and their associated May 12, 2015 · ECMAScript is the official name for the JavaScript language we all know and love. It is standardized by Ecma International. We can now use rest parameters, default values and destructuring, among other new features. Why use arrow functions almost everywhere? Scope safety: When arrow functions Feb 22, 2024 · I'm not trying to import anything from @vercel/turbopack-ecmascript-runtime directly in my code. ECMAScript is the standardization of the family of scripting languages that includes JavaScript. As a consequence, ECMAScript 6 coders nowadays can get rid of nearly all semicolons and remove clutter from their source code. Aug 28, 2015 · Original answer ECMAScript 6 support doesn't depend on Cordova, is a Webview issue. Start using es6 in your project by running `npm i es6`. Full support for ECMAScript 5. /b/y ) Browser Support ECMAScript 1 - 6 is fully supported in all modern browsers. Fast forward a few years and we now have complete applications being run in browsers with a lot of JavaScript, as well as JavaScript being used in other contexts Jan 28, 2018 · Then I could look up which version of javascript that engine runs on? Let me give a practical example of what I'm getting at. Supports Python 2 & 3. Several new features were introduced: E4X, several new Array methods, and Array and String generics. The language was invented by Brendan Eich at Netscape and first appeared in that company's Navigator 2. I'm now using the following rule of thumb for functions in ES6 and beyond: Use function in the global scope and for Object. Does anybody have any information about this? Or do we need to give-up up hope that Eclipse will get EcmaScript 6 support anytime soon? Report message to a moderator Previous ECMAScript is based on several originating technologies, the most well-known being JavaScript (Netscape) and JScript (Microsoft). We will discuss the limitations of ES5 and what solutions were offered by ES6 version to overcome those limitations and further improve the JavaScript language . As for ECMAScript 7 (ES2016), there is no proposal at any of stages 1, 2, 3, 4 or stage 0 for static typing. js and Express, you realized that you can’t use stuff like import from and export default? If so, Both ECMAScript 6 and all tools (including compressors) perfectly support automatic semicolon inference/insertion nowadays. Classes in JS are built on prototypes but also have some syntax and semantics that are unique to classes. Oct 13, 2015 · In Safari 9 for OS X and iOS 9 you’ll be able to use some great ES6 features — there are even more you can try out if you run the nightly build. 1(source) . Jul 20, 2016 · ECMAScript 6 (or ECMAScript 2015) is the newest version of the ECMAScript standard and has remarkably improved parameter handling in JavaScript. I've seen a few proposals/ideas for static typing appear on the es-discuss mailing list, but none of these have actually been proposed for ES7 (ES2016). 0. ECMAScript 5 Full support for the ECMAScript 5 specification. js provides a modern and standardized approach to modular JavaScript development. json' This works fine if I try to import a JavaScript file. I'm still using Babel in 2019. Oct 28, 2017 · ECMAScript 6 It is the sixth edition of the ECMA-262 standard, and features major changes and improvements to the ECMAScript specification. The arrow notation you're talking about (=>) is actually supported by JavaScript ECMA Script 2021 in ServiceNow which is introduced in Tokyo release. js, exploring how they handle JavaScript modules, their syntax, and more. 2. You can see the current proposals on the tc39/ecma262 GitHub repository. ES6 brought significant changes to the JavaScript language. 1 The Object Constructor Called as a Function 15. url); const data = require(". 1 Objects 4. 6 -- ECMA-262, 5th edition. Jul 5, 2024 · Conclusion Using ECMAScript Modules in Node. In javascript version ECMAScript 7, you can declare an async function, but you cannot in ECMAScript 6. What is ECMAScript 6 (or ES6) ECMAScript 2015 (or ES6) is the sixth and major edition of the ECMAScript language specification standard. 4 adds a series of type system improvements, new template strings, and support for features from ECMAScript 6, the upcoming update to the JavaScript standard. 6. Use class for object constructors. Apr 20, 2015 · 13 According to PhantomJS dev's comment on GitHub, the full support of ES6 will come with PhantomJS 2. May 26, 2009 · 201 ECMAScript = ES ECMAScript is a specification for scripting languages defined in the ECMA-262 standard. 217 12. The current Safari Technology Preview Release 4 has support for PTC. Nov 23, 2021 · The JavaScript assertion is based on the Nashorn engine which supports ECMAScript 5. The choice of features is based on the implementation in at least one browser (Firefox actually). 2 The Object Modern browsers support all ES6 features, so ES6 is a good choice. 0 browser. Synonyms: ES6, ES2015, and ECMAScript 2015 This edition of ECMAScript changed its name from ES6 to ES2015 because in 2015 Ecma International decided to switch to annual releases of ECMAScript. New versions of the standard are released every year. This page concerns the JavaScript language but a similar page Feb 2, 2025 · Learn the key differences between CommonJS and ECMAScript Modules (ESM) in JavaScript. forEach, among other constructs, even though according to MDC it isn't available until Javascript 1. Web Inspector makes developing and debugging with PTC straightforward and intuitive. However when I use this flag the metavariable __dirname is not available. So, I have these questions here: What is ESNext, actually? Does it refer to any specific version of ECMAScript? I use the flag --experimental-modules when running my Node application in order to use ES6 modules. ECMA Standard is based on several originating technologies, the most well known being JavaScript (Netscape) and JScript (Microsoft). getTableName () === "sp_widget" To the existing filter on line 2 of the validation scripts, that allows saving ES6 code within the Client Controller field of a Service Portal widget. The fifth edition of ECMAScript (published as ECMA-262 5 th edition) codified de facto interpretations of the language specification that have become common among browser implementations and added support for new features that had emerged since the publication of the third edition. See the release post and video for details! Install New projects Run npm init esm or yarn create esm. 3 object 4. 2 primitive value 4. import { createRequire } from "module"; const require = createRequire(import. " Some sources say that the entire ECMAScript 6 is called "ECMAScript Harmony I haven't found an hint at all about this. prototype. Mar 2, 2025 · esm The brilliantly simple, babel-less, bundle-less ECMAScript module loader. Dec 5, 2024 · What is ECMAScript 2021/JavaScript ES12? ECMAScript (often referred to as JavaScript) is a programming language standardized by the European Computer Manufacturers Association (ECMA). Also, a two year release Apr 8, 2016 · This is because the JavaScript Validator is set to ECMAScript 3. 6 ordinary object 4. Discover their strengths, challenges, and how to transition to ESM effectively Jan 20, 2014 · It's worth noting that this answer was posted back at the beginning of 2014 and a lot has changed since then. May 23, 2016 · WebKit has ECMAScript 6 Proper Tail Calls and web developers are encouraged to take advantage of them to design programs in ways that were not possible before. 1 ECMAScript 6+: This version adds support for the features introduced in ECMAScript 2015-2020 and for JSX syntax as well as some current proposals to the standard. New language features are proposed already as the draft of Edition 6 is feature frozen and nears its completion. Jun 6, 2024 · Explore the differences between CommonJS and ES modules in Node. json"); I have enabled ECMAScript 6 under File->Default Preferences->Languages & Frameworks->Javascript but I still get errors every time I use let or the arrow (=>). In this comprehensive guide, you'll learn how to master classes in ES6, understand their features, and leverage them effectively in Jul 7, 2022 · ECMAScript 6, also known as ECMAScript 2015, is the latest version of the ECMAScript standard. Here are the steps I've taken to try to resolve this issue: Deleted node_modules and reinstalled my dependencies with npm install (I've also tried with yarn install). Dec 19, 2024 · The JavaScript page opens. prototype, including toSorted, toReversed Sep 6, 2024 · The Birth of ECMAScript: A Step-by-Step Evolution 1. Why use arrow functions almost everywhere? Scope safety: When arrow functions es6 - enable all ECMAScript 6 features except for modules (this automatically sets the ecmaVersion parser option to 6). ECMAScript Modules (ESM) is a specification for using Modules in the Web. 7, last published: 12 years ago. Since publication of the first edition in 1997, ECMAScript has grown to be one of the world's most widely used general-purpose programming languages. ECMAScript® 2018 Language Specification Table of Contents Introduction 1 Scope 2 Conformance 3 Normative References 4 Overview 4. Amazing New JavaScript Features These updates enhance the May 16, 2024 · ServiceNow Supports JavaScript ECMA 6 which is also called Vanilla JavaScript. In the Mar 30, 2015 · So when ECMASCript 6 is finalized and released and browsers natively supports javascript based off of ECMAScript 6, do we need Microsoft TypeScript? Since TypeScript follows ECMAScript 6 standard, after ECMAScript 6 based javascript is directly supported in browsers, can we still use Typescript without compiling into to native javascript as it This new version, SuiteScript 2. esm is the world’s most advanced ECMAScript module loader. Jul 23, 2025 · A Babel transpiler is a free, open-source tool that converts ECMAScript 2015 (ES6) code to a backward-compatible version of JavaScript that can run on old and new browsers. Jan 20, 2015 · TypeScript 1. 1 Unicode Format-Control Jul 31, 2025 · ECMAScript vs JavaScript: Dive into the evolution and distinctions of these scripting languages. I've looked through the MDN resources here as well as here, as well as the WHATWG Fetch specification, and for all that, I can't figure out if the Fetch API is part of ECMAScript 5, 6, 7 or otherwi We would like to show you a description here but the site won’t allow us. ES6 specific functionality cannot be supported. Since the ES6 specification was finally approved on June 17 of this year (2015), the actual support for ES6 of mobile Webview is missing or incomplete. The version of ECMAScript IE aims for is the Third Edition standard, which is also version JavaScript 1. After Netscape handed JavaScript over to ECMA, the Mozilla foundation continued to develop JavaScript for the Firefox browser. 8. As far as I've been a Browser Support ECMAScript 2023 is supported in all modern browsers since July 2023: Jul 11, 2025 · ECMAScript is a scripting language specification on which JavaScript is based. By following the steps outlined above, you can start leveraging ECMAScript Modules in your Node. Features include Function. At this stage the latest draft is final and will not be receiving any further updates. The standard ECMAScript built-ins are not explicitly documented in the QML documentation. It's supported by all modern browsers and the recommended way of writing modular code for the Web. 9 FAQ: modules 16. Sep 7, 2023 · Introduction ECMAScript 6 (ES6) introduced significant enhancements to JavaScript, and one of the most notable additions is the class syntax. Current issues with the specification process are planned to be solved by introducing stages and champions for feature sets. . However, it wont prevent the Syntax Checker from throwing errors at you inside the widget editor if you start using ES6 code patterns like 'let' and 'const'. 2 ECMAScript Overview 4. Mozilla's latest version was 1. 1 Value Properties of the Global Object 15. They encapsulate data with code to work on that data. 2 Object Objects 15. js EcmaScript modules. JavaScript (historically) has things ECMAScript doesn't. Sep 1, 2014 · ECMAScript 2015 - 2020 are now officially supported as both input and output language for the Closure Compiler. Unfortunately even though Js2Py can be generally used to translate huge Js files (over 50k lines long), in rare cases you Apr 8, 2014 · A while ago our team migrated all its code (a mid-sized AngularJS app) to JavaScript compiled using Traceur Babel. It introduces several new Does ECMAScript 6 have a convention for abstract classes? [duplicate] Asked 10 years, 5 months ago Modified 6 years, 11 months ago Viewed 109k times Jan 31, 2017 · How can I access a JSON file in ECMAScript 6? The following doesn't work: import config from '. json"); JavaScript (historically) has things ECMAScript doesn't. prototype properties. Languages like JavaScript are based on the ECMAScript standard. ECMAScript is commonly used for client-side scripting on the World Wide Web, and it is increasingly being used to write server-side applications and services using Node. It includes detailed information about ECMAScript support in major web browsers. We would like to show you a description here but the site won’t allow us. There are 12 other projects in the npm registry using es6. ES6 is a significant update to the language, and the first update to the language since ES5 was standardized in 2009. 5 was aimed at, which is why they're considered similar. For more in-depth documentation, please refer to the We would like to show you a description here but the site won’t allow us. Is there an alternative Jan 31, 2017 · This approach is the way Pawel advises in his blog post. Mar 27, 2024 · JavaScript and WebAssembly features This section explains the latest new features in JavaScript, the programming language specified by ECMA-262 (ECMAScript) and ECMA-402 (the ECMAScript Internationalization API), and in WebAssembly (Wasm). Internet Explorer (IE4) was the first browser to support ECMA-262 May 30, 2018 · The first of these new specifications was ES2015 (originally named ECMAScript 6, or ES6). 1 type 4. 2 Introducing the for May 10, 2015 · This will convert my ECMAScript-6 code to ECMAScript-5 equivalent. Nullish Coalescing (??) (since Qt 5. Stay ahead with insights on compatibility and best practices. It defines the standard for the JavaScript implementation. JavaScript ES12 is a standardized version of JavaScript that includes a number of new features and improvements over the previous versions1. 5 The ECMAScript 6 module loader API 16. But do I have any other solution to keep my old-browser-users happy? javascript ecmascript-6 backwards-compatibility ecmascript-5 edited Aug 11, 2016 at 8:22 ValarDohaeris-fuck-OpenAI 6,35853343 asked May 10, 2015 at 7:56 ashwinik001 5,18343441 1 V8 implements ECMAScript as specified in ECMA-262, 3rd edition ECMA-262, 3rd edition is JavaScript 1. Jan 19, 2015 · ECMAScript 7 is the next evolution of the ECMA-262 standard. TypeScript classes were based on the then-proposed ECMAScript 6 class specification to make writing prototypal inheritance less verbose and error-prone, and type annotations enabled IntelliSense and improved tooling. Jul 20, 2025 · JavaScript programs started off pretty small — most of its usage in the early days was to do isolated scripting tasks, providing a bit of interactivity to your web pages where needed, so large scripts were generally not needed. 16. 4 Constructor Properties of the Global Object 15. 4 Importing and exporting in detail 16. 1, includes the existing features and functionality that SuiteScript 2. We have Jan 12, 2016 · To make it possible, Babel gets the information about browser usage & features support from a number of other projects like browserlist. Methods added to String. Most of these features were aimed at eliminating JavaScript's quirks. Internet Explorer (IE4) was the first browser to support ECMA-262 15. The corresponding ECMA standard is ECMA-262 Edition 3 and ECMAScript for XML (E4X) with some additional features. 1, let alone 6. Existing code can benefit as well. May 6, 2017 · I've been experimenting with new native ECMAScript module support that has recently been added to browsers. This fast, production ready, zero dependency loader is all you need to support ECMAScript modules in Node 6+. es2016 - adds all ECMAScript 2016 globals and automatically sets the ecmaVersion parser option to 7. Mar 16, 2025 · ES6 classes shows a browser compatibility score of 92. Sep 7, 2014 · At the end of July 2014, TC39 [^1] had another meeting, during which the last details of the ECMAScript 6 (ES6) module syntax were finalized. js and other runtime environments Jul 8, 2025 · Classes are a template for creating objects. Jul 3, 2024 · This Ecma Standard defines the ECMAScript 2024 Language. To detect the ECMAScript version we can check the object exits into a browser or not. This is a collective score out of 100 to represent overall cross browser compatibility support of a web technology. I was monitoring Bugzilla for the JSDT EcmaScript plans for Eclipse Oxygen, and I can't get a clear picture as to how much EcmaScript 6 support will Eclipse Oxygen have. It has appeared in all subsequent browsers from Netscape and in all browsers from Microsoft starting with Internet Explorer 3. x claims to support 96% of the ECMAScript 2015 features, but there isn't any reference to modules (Node. This approach is supported by two internal bindings that the environments of functions have (environments provide storage space, so-called bindings, for the variables in a scope): 12 ECMAScript Language: Lexical Grammar . This edition was a large but necessary foundation to support the future, annual JavaScript versioning. All modern browsers now support const so it should be pretty safe to use without any problems. And to import modules not updated with ECMAScript module support, you can do like this: // Implement the old require function import { createRequire } from 'module' const require = createRequire(import. ECMAScript® 2025 language specification, 16th edition - ECMAScript is a programming language based on several technologies like JavaScript. 8 Design goals for ES6 modules 16. You might choose to set a lower target if your code is deployed to older environments, or a higher target if your code is guaranteed to run in newer environments. repeat () ) Unicode code-point escape form in string literals (e. ) (since Qt 6. g. The latest release, ES15 (2024), brings a list of exciting new features that aim to simplify coding, improve performance, and expand JavaScript's capabilities. Therefore the post is correct, ECMAScript is a subset of JavaScript. In this tutorial, we will explore arguments and parameters in detail and see how ECMAScript 6 has upgraded them. We aim to provide concise explanations of new language features with easy-to-understand code examples. May 16, 2020 · Regarding compatibility between ECMAScript specification and actual implementation; It is fairly easy to check out the data about browser support for ECMAScript2015 (ES6), but I found it pretty dif Dec 9, 2023 · Cannot use mix ECMAScript and CommonJS module Asked 1 year, 9 months ago Modified 1 year, 9 months ago Viewed 10k times Apr 8, 2014 · A while ago our team migrated all its code (a mid-sized AngularJS app) to JavaScript compiled using Traceur Babel. 3 URI Handling Function Properties 15. 8 standard object 4. Check the following link has a good example to detect ECMAScript Version. Dec 4, 2023 · ECMAScript 2023 (ES14) The 14th edition of the ECMAScript standard, ECMAScript 2023, introduced several new methods on Array. var \u {20BB7} = 42; ) Unicode code-point escape form in regular expressions (e. Navigate the complexities of JavaScript browser support and learn how to ensure compatibility across different browsers. 0 offers, and it also supports new language capabilities that were introduced in the ECMAScript 2019 (ES2019) edition of the ECMAScript specification. ECMAScript 5 is fully supported in all modern browsers. js ECMAScript 2015 support link). 5 compatible code in node. 2 Function Properties of the Global Object 15. js 6. json example below) with: Jun 10, 2019 · I've come across the term ESNext, and wondering it is the same as the ECMAScript. 5 prototype 4. So when it comes to user support, it will be very good for whatever the current version is. Apr 4, 2015 · The following is a changelog for JavaScript 1. Can I declare an "async function" in SuiteScript? (arbitrary example) JavaScript ES6 Features In this tutorial you will learn about the new features in latest version of JavaScript. 3 Terms and Definitions 4. / ECMAScript 6, also known as ECMAScript 2015, is the latest version of the ECMAScript standard. Support for Internet Explorer (IE11) Browser Support ECMAScript 3 is fully supported in all browsers. The next version of ECMAScript, ES6 (henceforth referred to by its new name, ES2015), is nearing the end of its standards process journey. Aug 5, 2025 · The JavaScript page opens. 3. JavaScript / ECMAScript JavaScript was invented by Brendan Eich in 1995. 1. 2 The Strict Variant of ECMAScript 4. If the native Webview where the app will be executed support ES6, you app will be work nice, otherwise doesn't. Jan 23, 2020 · By Jonathan Cunanan Have you ever tried to write front-end apps using ES6 syntax, but then when you decided to learn back-end development with Node. 1, ECMA 6 support is still experimental. The answer is "the current version". Do you know if Node. ECMAScript 6 implementation tests Test directly in each browser the implementation of the new features of the language. 4 constructor 4. 11 Further reading IV Collections 17. Jul 23, 2025 · JavaScript, the language that powers the web, continues to evolve with each new version of ECMAScript (ES), the standard that defines the language's capabilities and features. 8), which was released in November 2005. That means we may never support ECMAScript 6 if you need to use Rhino's built-in JavaScript parser. /data. To my surprise for such an up-to-date release of Eclipse, this dropdown is greyed out and I cannot select 5 or 5. ecmascript-6 support is now the norm. We support ECMAScript 6 (ES6 2015) Supported browsers: Google Chrome (recommended) Microsoft Edge Mozilla Firefox Safari If you ever experience strange behaviour, try opening an incognito/private browsing window or clearing your cache. meta. This ES6 tutorial helps you get started quickly with the new version of JavaScript called ECMAScript 2015, or ES6 in short. 2) are also implemented in the QML runtime. Language support includes type checking, optimization and down-leveling (transpilation) to other language levels where it is practical to do so. 💡 Use the -y flag to answer “yes” to . js. Mar 14, 2014 · 4 No, there is no support for static typing in either ECMAScript 6 (ES2015). At this time, ReSharper offers initial support for some of the new ECMAScript features, including for-of loops, computed property names, generators, class declarations, and modules. 10 Advantages of ECMAScript 6 modules 16. Oct 19, 2023 · In 2015, ECMAScript 6 was introduced – a significant release of the JavaScript language. 7 Details: imports as views on exports 16. /config. This blog post gives an overview of the complete ES6 module system. 7 exotic object 4. In this article, we are going to discuss briefly the differences between ECMAScript 5 and ECMAScript 6 versions of JavaScript, as well as all the new features introduced in each of these versions. 3 Could we support decorating objects, parameters, blocks, functions, etc? Yes! Once we have validated this core approach, the authors of this proposal plan to come back and make proposals for more kinds of decorators. createRequire allows you to construct a CommonJS require function to use typical CommonJS features such as reading JSON in your Node. Nov 19, 2017 · 1 ECMAScript support different object on each version. 6 Using ES6 modules in browsers 16. However, it turns out I can use the Array. JavaScript (historically tries to) have everything ECMAScript has. Get expert tips and best practices today. Apr 21, 2015 · As ECMAScript 6 is a huge extension over its predecessor, it’s taking us more time to polish features for it. 5 (Gecko 1. For this reason, all these features were labeled as "Harmony. Ecma International is in charge of standardizing ECMAScript. ECMAScript 1 (ES1) — June 1997 The journey begins with ECMAScript 1, the initial version of the standard, which laid the foundation by This document is a section of the web browser standards support document. JavaScript String Padding ECMAScript 2017 added two string methods to JavaScript: padStart() and padEnd() to support padding at the beginning and at the end of a string. 15) and Optional Chaining (?. Everything is done in 100% pure Python so it's extremely easy to install and use. It is best known as the language embedded in web browsers but has also been widely adopted for server and embedded Dec 26, 2013 · In general, we can only support ECMAScript 6 to the extent that our JavaScript parser supports it. Now you can support ES6 and ESM (ECMAScript modules) natively: Step 1: Prevent Jest from trying to transform ESM code to CommonJS, updating your Jest config (package. Moreover, numeric literal separators (the underscores in 1_000_000) are supported since Qt 6. May 7, 2021 · Yes it does, just add || g_form. 1 The Global Object 15. 1 Overview 17. bind, Array methods like indexOf, forEach, map & filter, Object methods like defineProperty, create & keys, the trim method on Strings and many more. 5. It's pleasant to finally be able import scripts directly and cleanly from JavaScript. js applications to take advantage of improved code organization, module encapsulation, and support for modern JavaScript syntax. Browser Support ECMAScript 2022 is supported in all modern browsers since March 2023: Variation 3 is how ECMAScript 6 handles super-calls. 5 Given this, I would assume I can use JavaScript 1. This release introduced many new features, such as const / let, arrow functions, classes, etc. Besides IE there's also Edge we need to worry about as well as older versions of Firefox and Chrome, and mobile browsers. It was developed for Netscape 2, and became the ECMA-262 standard in 1997. var regexp = /\u {20BB7}/u; ) y flag for sticky regular expressions (e. \u {20BB7} ) Unicode code-point escape form in identifier names (e. includes (), String. prototype and TypedArray. Shim to provide ECMAScript 6 Harmony implementation. It is the fifteenth edition of the ECMAScript Language Specification. dizlg sg zrnu hykogdi nzai 17rbmyzk lms0j k9l jamo 3ff