If you love little JavaScript coding challenges that teach you about the basics of the language, you'll enjoy TypeOfNaN JavaScript Quizzes, a project by Nick Scialli and a number of other contributors.

Even after writing JavaScript for many years, I still find it hard to believe how many of such questions I get wrong. Ultimately, I don't think that matters unless I'm live coding in front of an audience or something. Debugging is part of the workflow so even if we get something subtle wrong initially, we can usually figure out the problem and fix it. What we are aiming for in most cases is an end result, not necessarily a process. But a little quiz like this can definitely enhance your understanding, and that can't hurt!

And if you like interesting little JavaScript tidbits like I often share in this newsletter, don't forget that I've compiled all my previous tutorials with updated demos and code samples in an e-book bundle you can grab from Leanpub.

Now on to this week's tools!

Text Editors, IDEs, etc.

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Debug Visualizer
A VS Code extension for visualizing data structures while debugging. Works best with JavaScript/TypeScript. Also tested with C#, Java, and PHP. Works with any language that you can debug in VS Code.

Lens.vim
An automatic window resizing plugin for Vim. Automatically resizes windows when their content exceeds their window dimensions, but does so respecting some minimum and maximum resize bounds.

guijs
A multi-purpose native Windows and Mac app to help you manage your development projects. Has features for projects, package installation, script management, and more.

OpenChakra
Full-featured visual editor and code generator for React using Chakra UI (the React component library).

Autocode
An online IDE for connecting APIs together, for makers and developers alike.

Codecov
A code coverage solution to improve your code review workflow and quality. Provides highly integrated tools to group, merge, archive, and compare coverage reports.

CodeinCloud
Provides managed and dedicated cloud IDEs, hosted private cloud solutions and DevOp pipelines. Users can access on-demand IDEs for development.

Markdown App
Online or native WYSIWYG editor for Markdown for Mac, Windows, and Linux.

iHateRegex
Interactive regex cheatsheet for searching for common or complex regular expression solutions.

Peacock
VS Code plugin to subtly change the color of your workspace. Ideal when you have multiple VS Code instances and you want to quickly identify which is which.

Testing and Debugging Tools

Haxor
Helps you support and learn from developers as they build with your products. See how developers use your product by watching their screens, code changes, and open applications.

Kasaya
A "WYSIWYG" (kind of) scripting language and run-time for browser automation.

Blisk
Now at version 12+. A developer-oriented browser that provides businesses with a development workspace for teams and freelancers to develop and test modern web applications twice as fast.

Hexometer
All-in-one website maintenance and performance monitoring tool that continuously monitors and reports 2800+ data points.

Beautify.log
A Node.js library to beautify console.logs with colors, making them easier to read and more useful.

virtual-module
Evaluate a module in a sandbox with in-memory module resolution.

findead
Dead React components finder to find components no longer in use.

ci-detect
Detect what kind of CI environment the program is in (e.g. Jenkins, GitLab, Netflify, Travis-CI, etc).

Zoya
A highly composable logging library written in TypeScript, used for both client and server applications.

React Tools

Edtr.io
A customizable edit-in-place WYSIWYG component for enabling user-editable pages in React.

resourcerer
Declarative data-fetching and caching framework for REST APIs with React.

react-typical
React typing animation in ~400 bytes of JavaScript.

React Tiny Fab
A tiny (~700 byte gzip'd) WAI-ARIA compliant floating action button for React. The home page has the button working in the bottom right corner if you want to see what this does.

react-roughviz
a thin React wrapper around roughViz, the library for creating sketchy/hand-drawn styled charts in the browser.

react-ga
A JavaScript module that can be used to include Google Analytics tracking code in a website or app that uses React for its front-end codebase.

React Awesome Slider
React content transition slider. A 60fps, lightweight, performant component that renders an animated set of production-ready general purpose sliders.

React Tippy
A lightweight tooltip library for React based on Tippy.js and powered by Popper.js.

react-adal
Azure Active Directory Library (ADAL) support for React.

iframe-resizer-react
The official React interface for iFrame Resizer, a library that auto-resizes height and width of same- and cross-domain iframes to fit their contained content.

React Puzzle Confirm
This is kind of odd. It's a modal to "confirm" (kind of like a captcha) by fitting a puzzle piece using a slider.
 

A Tweet for Thought

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Made something? Send links via Direct Message on Twitter @WebToolsWeekly (details here). No tutorials or articles, please. If you have any suggestions for improvement or corrections, feel free to reply to this email.
 

Before I Go...

Speaking of code editors, Codewerks is a new project that is running a Kickstarter for "software using a streamlined iPad interface that gives you all the flexibility of a Linux machine."

Thanks to everyone for subscribing and reading!

Keep tooling,
Louis
webtoolsweekly.com
@WebToolsWeekly
PayPal.me/WebToolsWeekly
WTW on YouTube

The following intro is a paid product review for Wallaby, a developer productivity tool that runs your JavaScript and TypeScript tests immediately as you type.

Code testing is a huge part of the current JavaScript landscape, so if it's crucial that you run tests on your code base regularly, you'll love Wallaby. Wallaby is available as an extension for VS Code, JetBrains Editors, Visual Studio, Sublime Text, and Atom. I'll demonstrate here how powerful Wallaby is by showing you how it works within VS Code.

Once you've installed and configured Wallaby, you can open any project and run it via its Command Palette, shown here:

When you choose the Start command, you can open any JavaScript or TypeScript file and you'll see something like the following:

Notice a few things:
 

• The colored squares on the left indicate code coverage. These squares can be grey, yellow, green, pink, or red, indicating various levels of coverage from your tests.
• The lines that contain console.logs have their outputs displayed to the right. These get updated in real time as you write or edit your code (similar to Quokka.js, another tool by the same developers that I've reviewed previously)

As you can see, if you're accustomed to using a lot of console.logs and adding breakpoints to your code, Wallaby is going to dramatically increase your productivity. You get that feedback immediately within the code, without actually executing it in a browser or other environment. In other words, your code editor is the console, with the bonus of everything displaying in its immediate code context.

When it's running, Wallaby displays the number of failed and passed tests in the status bar:
 

Clicking on the failed and passed tests in the status bar will open Wallaby's Output Channel, with a little more detail on what's happening with your tests:

One of the features that has caught the attention of many developers is Wallaby's Time Travel Debugger, which was added to Wallaby in December. This feature allows you to move forward or backwards through your code to understand what led to a specific bug.

You can start the debugger on a line of code where your test begins, or on any line executed by one of your tests. Once begun, you can run a number of different commands to get to the root of a particular issue. This is helped out by the Debugger View that opens in the left panel. Pretty powerful! And again, part of the power is that this is all available right inside your code base – no need to open up a separate environment like the developer tools in your browser.

There's a lot more to Wallaby that I haven't mentioned here, but this should be enough to give you a taste of some of the primary features of the tool, which is free to try. Check out the docs for more on what I've only briefly touched on here.

Now on to this week's tools!

Media Tools (SVG, Video, etc)

Iconset
Free, cross-platform SVG icon organizer app for designers, developers or product teams. Works on both Mac and Windows.

Open Peeps
A hand-drawn illustration library to create scenes of people, each drawing available in PNG or SVG format.

Cosha
JavaScript utility to add colored shadows to your images. Use via defaults or customize via the API.

Filmage Screen
Screen recorder and video editor for Mac. All-in-one video toolbox that lets you record HD video, edit video, make animated GIFs, convert video, and more.

Biteable
Video making platform with ready templates for creating marketing videos for different social platforms, industries, etc.

Unscreen
Online tool that uses AI to remove the background from an uploaded video.

SequenceDiagram.org
Online tool to build sequence diagrams using a drag-and-drop interface, useful for presentations.

Faux Code Generator
Input real code via a Gist URL and this tool will produce an SVG version of the code in a mock format, for possible use in slides, etc.

Smithsonian Open Access
Download, share, and reuse millions of the Smithsonian’s images. Use in commercial projects without attribution or written permission (although you should read the FAQ for copyright considerations).

Panolens.js
Flexible, event-driven, WebGL-based JavaScript panorama viewer built on Three.js.

Fontice.com
Fastest browser-based WebP converter. Free JPG/PNG to WebP conversion without uploading to any other servers.

Heroicons
A set of free MIT-licensed high-quality SVG icons for UI development

Git, GitHub, and CLI Tools

React Chat Tutorial
Quickly build chat leveraging Stream's Chat API. Our comprehensive React components will get you up and running fast.  sponsored

CLUI
A collection of JavaScript libraries for building command-line interfaces with context-aware autocomplete.

actions-comment-run
GitHub action to execute any script in an issue or pull request comment.

tickgit
Allows you to do project management in your codebase with TODO comments.

grep.app
Search across a half million Git repos, with options for case sensitivity, regex, and whole words only.

GitHub Data
Populate data from GitHub into Figma mockups.

GitHub CLI
In case you missed it, this is GitHub's official command line tool.

Octomments
GitHub issues as a comment plugin.

Gitpod
Launches ready-to-code dev environments for your GitHub or GitLab project with a single click.

GistPad
VS Code extension for managing and sharing code snippets, notes and interactive samples using GitHub Gists.

paint-github
This is kind of humourous. It's a Chrome or Firefox extension that adds a feature to GitHub comments that lets you "draw" your comment.

The Uncategorizables

React Chat Tutorial
Quickly build chat leveraging Stream's Chat API. Our comprehensive React components will get you up and running fast.  sponsored

Outgrow
Platform to build interactive content like calculators, quizzes, chatbots, surveys, and more, for marketing purposes.

unavatar
API that searches common social media platforms to get a user's avatar image by means of a username.

Voiceflow
Design, prototype and build voice apps. Collaboratively design, prototype, and build Alexa Skills and Google Actions, without coding.

Limio
Sell subscriptions and recurring products, build landing pages, checkouts, self-service portals, and more, with no code.

ResponseVault
Alpha. Create a database application with a drag and drop form builder. Import your own JavaScript UI widgets.

Awesome JS
A visual tool to look for popular JavaScript packages, categorized.

Advanced App Development Cost Calculator
Seems to be mainly for large corporate apps because the estimated prices are fairly high.

Nots.io
Documentation tool for development teams. Access docs from your code and always know if something is obsolete.

Opensource Buiders
Find open-source alternatives for your favorite apps.

damnshort
Short dot-com names, suitable for branding, available for sale for $195 each.

A Tweet for Thought

I think it's safe to say many of us are punk rock programmers.
 

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Made something? Send links via Direct Message on Twitter @WebToolsWeekly (details here). No tutorials or articles, please. If you have any suggestions for improvement or corrections, feel free to reply to this email.
 

Before I Go...

If you love numbers and Math, you'll adore MetaNumbers. It's an encyclopedia providing all sorts of super-boring info on any positive integer you enter. To me this is kind of like Brian Regan's comedy bit on refrigerators, but I know a lot of you might find it interesting.

Thanks to everyone for subscribing and reading!

Keep tooling,
Louis
webtoolsweekly.com
@WebToolsWeekly
PayPal.me/WebToolsWeekly

Although I often include quick DOM scripting tips in the intro of this newsletter, for this week, I'm just going to point you to a great little resource that was sent to me by reader Phuoc Nguyen:

• HTML DOM

• Make a draggable element
• Resize columns of a table
• Sort a table by clicking its headers
• Calculate the size of the scrollbar
• Communicate between an iframe and parent window

So check out HTML DOM, I'm sure you'll have lots to investigate!
 

Now on to this week's tools!
 

Front-end Frameworks

Have Happier, More Productive Video Meetings
Team.video makes it easier and faster for remote teams to work together by offering user friendly video meetings with agendas, collaborative notes, and emoji responses. No download required and it’s free to use.   via Syndicate

chakra-ui-vue
A set of accessible and composable Vue components that you can use to build your favourite applications and sites.

Pixel Lite
A beautifully crafted, responsive UI kit based on Bootstrap 4 that includes 100 components, 3 plugins, and 3 example pages.

next-typescript-materialui-jest-starter
Very opinionated starter boilerplate for projects based on Next.js, setup with Typescript, Material-UI, and Jest.

React SaaS Template
Template for building a SaaS app or admin website using React + Material-UI.

web3-react
A simple, extensible, dependency-minimized framework for building modern Ethereum decentralized apps.

Tailwind UI
A UI components library, crafted by the creators of Tailwind CSS.

neo.mjs
A Web Workers-driven UI framework.

LitElement
A simple base class for creating fast, lightweight web components. Makes it easy to define web components – ideal for building a UI design system.

Ionic React
React version of Ionic Framework. 100+ mobile optimized React UI components. Standard React tooling with react-dom.

Accessible Components
Scott O'Hara's repo that lists all the accessible widgets and components he's built.

StarAdmin
A free responsive admin template built with Bootstrap 4.

Media Tools

Tech Productivity Newsletter
A brief newsletter featuring tools and articles for remote work, work culture, learning science, and more – all to help you be more productive.   promoted 

Croppola
Upload a photo and this tool will use AI to crop the photo for you automatically, or you can crop it manually and download the result.

Image to Colors
Online tool that extracts colors from any photo on upload.

Nuxt Optimized Images
Automatically optimizes images used in Nuxt.js projects (JPEG, PNG, SVG, WebP and GIF).

Twilio Video React App
Demonstrates a multi-party video application built with twilio-video.js and Create React App.

react-particle-image
React component to render images as interactive particles. There's an interactive demo using the React logo that's pretty cool.

CoreUI Icons
Premium designed free icon for web and mobile, available in SVG, webfont, and raster formats.

DotMatrix.js
A small, performant class-based, dot matrix library with animated movements that respond to mouse/touch events.

react-calendar-heatmap
A calendar heatmap component built on SVG, inspired by GitHub’s commit calendar graph.

Chessboard Image
Modify chess pieces on a virtual chess board, to create chess positions, then download the image for use wherever you want. Might be cool for a chess tutorial website or blog.

Video Language
A language for making movies. Combines the power of a traditional video editor with the capabilities of a full programming language.

The Uncategorizables

Tech Productivity Newsletter
A brief newsletter featuring tools and articles for remote work, work culture, learning science, and more – all to help you be more productive.   promoted 

Mailcoach
A self-hosted email list manager. It integrates with services like Amazon SES, Mailgun, Postmark, or Sendgrid to send out mailings affordably.

Backstage
Open-source developer portal that puts the developer experience first by means of a a unified front end for all your infrastructure tooling.

dstack.ai
Collaborative data exploration. Enables individual data scientists and their teams to publish, share, and track data visualizations.

TAGX
Allows you to create video highlights and annotate the interesting parts of a video. Enter a YouTube, Vimeo, or direct video link to start annotating.

cs.opensource.google
A search engine to search Google's open source projects (Angular, Dart, Flutter, Go, etc).

Cotter
One-click secure phone number login for your apps.

Phrase
Automate localization processes. Edit language files online with your team of translators or order translations into more than 60 languages.

It's a Live
Lets you mimic a live coding presentation by prerecording the presentation, which gets triggered by random keystrokes as if you were really coding.

EasyCSV
Import spreadsheets into your App, Zapier, Google Sheets, Salesforce, or any public API in minutes.

Pico
Platform to create paywalled content, subscriptions, newsletters, etc.

A Tweet for Thought

Send Me Your Tools!

Made something? Send links via Direct Message on Twitter @WebToolsWeekly (details here). No tutorials or articles, please. If you have any suggestions for improvement or corrections, feel free to reply to this email.
 

Before I Go...

If you've got a lot of extra time at home (and you should!) you might like Codepip. There you'll find a number of different interactive online games that teach you various aspects of front-end development.

Thanks to everyone for subscribing and reading!

Keep tooling,
Louis
webtoolsweekly.com
@WebToolsWeekly
PayPal.me/WebToolsWeekly

Last week I covered a really simple introduction to the HTML Drag and Drop API, for those of you who have never used it before. The demo has the minimum code required to produce a drag and drop example. Let's take that a little further and incorporate the dataTransfer object, which has methods and properties that can be used in the midst of a drag and drop operation.

First, I can use the setData() method of the dataTransfer object, which I'll incorporate in the midst of my event listener when listening for a dragstart event (an event I didn't need to use in the previous demo). The relevant line looks something like this (where "e" is the event object):

As you can see, the setData() method takes two arguments: The data type and the data itself. In this case, the data is simply the innerHTML of the dragged element. This is the first step in transferring data: Setting the data, which happens when the element is initially dragged.

The next key line in my code will be using the getData() method. In this case, I'll use it when the drop event is triggered on my drop area element:

The data that I'll be grabbing is text that represents a valid CSS color keyword, which will be inside each draggable element. The data could be a lot of things, but in this case I'm just using some text for demo purposes. And as you can see, the text sets the background color of the drop area element.

See the full working demo here

There's naturally a lot more code there, but it's fairly straightforward. I'm looping over the draggable boxes to add the event listeners to each one. The setData() and getData() methods are used within that loop to obtain and apply the color info.

Try dragging any of the boxes into the drop area to see the background of the drop area change. You can even try changing the HTML to use different colors (any valid CSS color value will work). As long as the color is valid, the background of the drop area element will change to that color.

And that's a basic way to use the dataTransfer object when working with the Drag and Drop API.
 

Now on to this week's tools!
 

JavaScript Utilities

Working From Home? Try Team.Video
Team.video makes it easier and faster for remote teams to work together by offering user friendly video meetings with agendas, collaborative notes, and emoji responses. No download required and it’s free to use.   via Syndicate

Van11y
Bit of an older project that I just discovered. A collection of customizable, accessible scripts for rich interface elements, built using progressive enhancement.

Rsup Progress
A simple progress bar with promises support.

Heapify
A very fast JavaScript priority queue, implemented using a binary heap, with no dependencies.

Nano Events
Simple and tiny (72 bytes) event emitter library for JavaScript.

Chardin.js
Simple overlay instructions for your apps. Kind of like those 'app tour' plugins, but just a single overlay pointing stuff out.

Serialize JavaScript
Serialize JavaScript to a superset of JSON that includes regular expressions and functions.

FullCalendar
A JavaScript calendar plugin, great for displaying events with drag-and-drop capabilities and an API for extending its functionality.

defu
Utility to recursively assign default properties.

Clack
A modern keyboard shortcut library written in Typescript.

Sharect.js
A lightweight (2.9Kb gzipped and minified) JavaScript library to let users share text selections to social networks in desktop browsers (like Medium).

Uppload
A better JavaScript image uploader. Highly customizable with 30+ plugins, open-source, and can be used with any file uploading back end.

Media Tools (SVG, Video, Audio, etc.)

Beginner JavaScript by Wes Bos is 50% Off!
The master package includes 88 HD videos, part of 15 modules – and course updates are free forever.   promoted 

mediasoup
Cutting-edge WebRTC video conferencing. The perfect choice for building multi-party video conferencing and real-time streaming apps.

gifcap
Create animated GIFs in your browser from a screen recording. Client-side only, no data is uploaded.

Tabler Icons
A set of over 400 free MIT-licensed high-quality SVG icons for you to use in your web projects. Each icon is designed on a 24x24 grid and a 2px stroke.

Video Puppet
Using a markdown file, create a video (with captions) from a chosen set of images, audio files and smaller video clips.

Exifr
The fastest and most versatile JavaScript EXIF reading library.

Seamless Pattern Generator
Create seamless, repeatable royalty free patterns for your website, or to download as SVG, JPEG or PNG.

Resoundly
Produce a podcast simply by typing the content and this app will convert it to speech.

Spline
Easily create 3D web experiences without coding. Build and iterate fast with production-ready results.

Photo Stream
Self-hosted, super simple photo stream. Built with Ruby and seems to require either Netlify or Jekyll.

Ionicons
Premium designed icons for use in web, iOS, Android, and desktop apps. Support for SVG and web font.

The Uncategorizables

Advanced React & GraphQL by Wes Bos is 50% Off!
The master package includes 68 HD videos, part of 10 modules – and course updates are free forever.   promoted 

Brim
Desktop application to efficiently search large packet captures and logs from Zeek (the network security monitoring tool).

StartNames
Produces brandable ideas for domain names in a Twitter stream, based on actual domains that are for sale.

WMS Everywhere
Chrome extension to help you research search volume, advertising cost per click, and related keywords inside Google search results – free and on-demand.

PDF.js Express
Add a PDF.js viewer with out-of-the-box annotation, PDF form fill, and signing. Based on Mozilla's PDF.js (for parsing and rendering PDFs).

AsyncAPI
Open source tools to easily build and maintain your event-driven architecture. All powered by the AsyncAPI specification, the industry standard for defining asynchronous APIs.

Weglot
Allows you to make your website multilingual in minutes and to manage all your translations effortlessly.

Our Site Updates
An easy way to post updates to your website (e.g. via easy to install banners) and keep visitors informed.

RightFont
An innovative, beautiful and professional font manager app for Mac, helping designers preview, install, sync, and manage their font files.

PingPong
Remote user interviews and user tests made simple.

Extract Article Text
Lets you easily extract boilerplate-free text from news articles, blogs, press releases, and company pages with a single API request.

Commerce
Drop‑in e‑commerce for any website with a single line of code. Serverless, real‑time, and API‑first.

A Tweet for Thought

Send Me Your Tools!

Made something? Send links via Direct Message on Twitter @WebToolsWeekly (details here). No tutorials or articles, please. If you have any suggestions for improvement or corrections, feel free to reply to this email.
 

Before I Go...

This is amazing: Open and Shut lets you send messages in Morse code by repeatedly slamming your laptop shut. So if you've been kidnapped and forced to give up all your passwords or something...?

Thanks to everyone for subscribing and reading!

Keep tooling,
Louis
webtoolsweekly.com
@WebToolsWeekly
PayPal.me/WebToolsWeekly