hello.js

var please = require('share');
console.log('thank you');

NEW !!!

Tuesday, 11 February, 2020 UTC

Firefox 73 is upon us

Another month, another new browser release! Today we’ve released Firefox 73, with useful additions that include CSS and JavaScript updates, and numerous DevTools improvements. Read on for the highlights. To find the full list of additions, check out ... more


Wednesday, 15 January, 2020 UTC

How we built Picture-in-Picture in Firefox Desktop with more control over video

Picture-in-Picture support for videos is a feature that we shipped to Firefox Desktop users in version 71 for Windows users, and 72 for macOS and Linux users. It allows the user to pull a <video> element out into an always-on-top window, so that ... more


Tuesday, 7 January, 2020 UTC

Firefox 72 — our first song of 2020

2020 is upon us, folks. We’d like to wish everyone reading this a happy new year, wherever you are. As you take your first steps of the new year, figuring out what your next move is, you may find it comforting to know that there’s a new Firefox release ... more


Tuesday, 17 December, 2019 UTC

Mozilla Hacks’ 10 most-read posts of 2019

Like holiday music, lists are a seasonal cliche. They pique our interest year after year because we want a tl;dr for the 12 months gone by. To summarize, Mozilla Hacks celebrated its 10th birthday this past June, and now in December, we come to the end ... more


Tuesday, 10 December, 2019 UTC

Debugging Variables With Watchpoints in Firefox 72

The Firefox Devtools team, along with our community of code contributors, have been working hard to pack Firefox 72 full of improvements. This post introduces the watchpoints feature that’s available right now in Firefox Developer Edition! Keep reading ... more


Thursday, 5 December, 2019 UTC

DeepSpeech 0.6: Mozilla’s Speech-to-Text Engine Gets Fast, Lean, and Ubiquitous

The Machine Learning team at Mozilla continues work on DeepSpeech, an automatic speech recognition (ASR) engine which aims to make speech recognition technology and trained models openly available to developers. DeepSpeech is a deep learning-based ASR ... more


Wednesday, 4 December, 2019 UTC

Firefox 71: A year-end arrival

Another release is upon us: please welcome Firefox 71 to the stage! This time around, we have a plethora of new developer tools features. These include the web socket message inspector, console multi-line editor mode, log on events, and network panel ... more


Tuesday, 3 December, 2019 UTC

Firefox 71: A winter arrival

Another release is upon us: please welcome Firefox 71 to the stage! This time around, we have a plethora of new developer tools features. These include the web socket message inspector, console multi-line editor mode, log on events, and network panel ... more


Thursday, 21 November, 2019 UTC

Multi-Value All The Wasm!

This article is cross-posted on the Bytecode Alliance web site. Multi-value is a proposed extension to core WebAssembly that enables functions to return many values, among other things. It is also a pre-requisite for Wasm interface types. I’ve been adding ... more


Tuesday, 19 November, 2019 UTC

Creating UI Extensions for WebThings Gateway

Version 0.10 of Mozilla’s WebThings Gateway brings support for extension-type add-ons. Released last week, this powerful new capability lets developers modify the user interface (UI) to their liking with JavaScript and CSS. Although the initial set of ... more


Tuesday, 12 November, 2019 UTC

Announcing the Bytecode Alliance: Building a secure by default, composable future for WebAssembly

Today we announce the formation of the Bytecode Alliance, a new industry partnership coming together to forge WebAssembly’s outside-the-browser future by collaborating on implementing standards and proposing new ones. Our founding members are Mozilla, ... more


Tuesday, 29 October, 2019 UTC

Auditing For Accessibility Problems With Firefox Developer Tools

Since its debut in Firefox 61, the Accessibility Inspector in the Firefox Developer Tools has evolved from a low-level tool showing the accessibility structure of a page. In Firefox 70, the Inspector has become an auditing facility to help identify and ... more


Tuesday, 22 October, 2019 UTC

Firefox 70 — a bountiful release for all

Firefox 70 is released today, and includes great new features such as secure password generation with Lockwise and the new Firefox Privacy Protection Report; you can read the full details in the Firefox 70 Release Notes. Amazing user features and protections ... more


Friday, 4 October, 2019 UTC

Why is CSS so Weird?

CSS is the design language of the web — one of three core web languages — but it also seems to be the most contentious and often perplexing. It’s too easy and too hard, too fragile and too resilient. Love it or hate it, CSS is weird : not quite markup, ... more


Friday, 27 September, 2019 UTC

Why is CSS so Weird?

CSS is the design language of the web — one of three core web languages — but it also seems to be the most contentious and often perplexing. It’s too easy and too hard, too fragile and too resilient. Love it or hate it, CSS is weird : not quite markup, ... more


Tuesday, 17 September, 2019 UTC

Moving Firefox to a faster 4-week release cycle

Editor’s Note: Wednesday, 10:40am PT. We’ve updated this post with the following correction: The SeaMonkey Project consumes Firefox releases, not SpiderMonkey, which is Firefox’s JavaScript engine. Thanks to an astute reader for noticing. Overview We ... more


Tuesday, 10 September, 2019 UTC

Caniuse and MDN compatibility data collaboration

Web developers spend a good amount of time making web compatibility decisions. Deciding whether or not to use a web platform feature often depends on its availability in web browsers. A brief history of compatibility data More than 10 years ago, @fyrd ... more


Friday, 6 September, 2019 UTC

Debugging TypeScript in Firefox DevTools

Firefox Debugger has evolved into a fast and reliable tool chain over the past several months and it’s now supporting many cool features. Though primarily used to debug JavaScript, did you know that you can also use Firefox to debug your TypeScript applications? ... more


Wednesday, 4 September, 2019 UTC

Firefox 69 — a tale of Resize Observer, microtasks, CSS, and DevTools

For our latest excellent adventure, we’ve gone and cooked up a new Firefox release. Version 69 features a number of nice new additions including JavaScript public instance fields, the Resize Observer and Microtask APIs, CSS logical overflow properties ... more


Friday, 30 August, 2019 UTC

The Baseline Interpreter: a faster JS interpreter in Firefox 70

Introduction Modern web applications load and execute a lot more JavaScript code than they did just a few years ago. While JIT (just-in-time) compilers have been very successful in making JavaScript performant, we needed a better solution to deal with ... more


Wednesday, 21 August, 2019 UTC

WebAssembly Interface Types: Interoperate with All the Things!

People are excited about running WebAssembly outside the browser. That excitement isn’t just about WebAssembly running in its own standalone runtime. People are also excited about running WebAssembly from languages like Python, Ruby, and Rust. Why would ... more


Tuesday, 16 July, 2019 UTC

MDN’s First Annual Web Developer & Designer Survey

Today we are launching the first edition of the MDN Developer & Designer Needs Survey. Web developers and designers, we need to hear from you! This is your opportunity to tell us about your needs and frustrations with the web. In fact, your participation ... more


Tuesday, 9 July, 2019 UTC

Firefox 68: BigInts, Contrast Checks, and the QuantumBar

Firefox 68 is available today, featuring support for big integers, whole-page contrast checks, and a completely new implementation of a core Firefox feature: the URL bar. These are just the highlights. For complete information, see: Firefox 68 Release ... more


Thursday, 27 June, 2019 UTC

GeckoView in 2019

Last September we wrote about using GeckoView to bring Firefox’s rendering engine to Android as a reusable library. By decoupling the Gecko engine from the Firefox application, we’ve created a newer, faster, and more maintainable way to create Android ... more


Wednesday, 26 June, 2019 UTC

How accessibility trees inform assistive tech

The web is accessible by default. It was designed with features to make accessibility possible, and these have been part of the platform pretty much from the beginning. In recent times, inspectable accessibility trees have made it easier to see how things ... more


Tuesday, 18 June, 2019 UTC

CSS Scroll Snap Updated in Firefox 68

When Firefox 68 goes to general release next month, it will ship with an updated CSS Scroll Snap specification. This means that Firefox will support the same version of the specification as Chrome and Safari. Scroll snapping will work in the same way ... more


Wednesday, 5 June, 2019 UTC

Indicating focus to improve accessibility

It’s a common, but fairly easy-to-fix accessibility issue: lack of indicating focus. In this post I will explain what we mean by focus and show you how focus outlines make your site easier to use. What is focus? Focus indicators make the difference between ... more


Wednesday, 29 May, 2019 UTC

JavaScript and evidence-based language design

Author’s note: Hi, I’m an engineer at Mozilla working on the Firefox DevTools server. I’m also a TC39 representative. This post focuses on some of the experiments I am trying out at the TC39, the standards body that manages the JavaScript specification. ... more


Tuesday, 21 May, 2019 UTC

Firefox 67: Dark Mode CSS, WebRender, and more

Firefox 67 is available today, bringing a faster and better JavaScript debugger, support for CSS prefers-color-scheme media queries, and the initial debut of WebRender in stable Firefox. These are just the highlights. For complete information, see: Firefox ... more


Thursday, 16 May, 2019 UTC

Faster smarter JavaScript debugging in Firefox DevTools

Script debugging is one of the most powerful and complex productivity features in the web developer toolbox. Done right, it empowers developers to fix bugs quickly and efficiently. So the question for us, the Firefox DevTools team, has been, are the ... more