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.
 

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 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

If you've never looked into using the HTML Drag and Drop API, I've created a super simple code example that uses the least code possible to demonstrate how simple it is to allow one element to be dragged into another one on a web page.

First, here's the HTML:

Notice the draggable attribute set to true, and the IDs that I'll use as hooks in the JavaScript. Here's the JavaScript:

Here I'm listening for the dragover and drop events to ensure that the element gets moved properly. The move itself is accomplished using the well-known appendChild() method.

And that's it! Aside from the variable declarations, it's just 6 lines of JavaScript. This code on its own isn't going to do a whole lot. All it does is drag the 'box' element into the 'dropzone' element.

You can see this in action in this CodePen demo, which also includes a little extra code that does the following:

• Adds some styles to indicate that the box is draggable and that the dropzone is being dragged over
• Listens for the dragend event to remove styles indicating that the box is draggable and disables the 'dragged over' styles
• Switches the draggable attribute to false

Now on to this week's tools!
 

JavaScript Libraries and Frameworks

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

p5.js
Now at version 1+. JavaScript library for creative coding, with a focus on making coding accessible and inclusive for artists, designers, educators, and beginners.

Hex Engine
A modern 2D game engine for the browser, written in TypeScript and designed to feel similar to React.

LInQer
The C# Language Integrated Queries ported for JavaScript for amazing performance.

Type Route
A flexible, type safe routing library, built on top of the same core library that powers React Router.

Angular
The popular framework is now a version 9.

Mirage JS
An API mocking library that lets you build, test and share a complete working JavaScript application without having to rely on any back-end services.

Solid
A declarative, efficient, and flexible JavaScript library for building user interfaces that doesn't use a virtual DOM.

Alpine.js
A rugged, minimal framework for composing JavaScript behavior in your markup.

BlockLike.js
An educational JavaScript library that bridges the gap between block-based and text-based programming.

Testing and Debugging Tools

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 

Screenshot Cyborg
Take a full-page screenshot of a webpage, up to 50 URLs at once. Choose to render the screenshot for desktop, tablet, or phone.

Stryker Mutator
A testing toolkit for JavaScript (also Scala and C#) that uses mutation testing, which means tests are run after bugs, or mutants, are automatically inserted into your code.

Cypress
Now at version 4+. Fast, easy, and reliable end-to-end testing for anything that runs in a browser.

Color Contrast Checker
Online tool that analyses and suggests colors that meet the required contrast ratio. Creates shareable links for chosen contrast checks.

LeakLooker X
Discover, browse and monitor database or source code leaks.

Animockup
Online prototype/animation tool to create animated mockups in your browser and export as video or animated GIF.

single-spa Devtools Inspector
A Firefox/Chrome devtools extension to provide utilities for helping with applications using single-spa (framework for front-end microservices).

micro-jaymock
Tiny API mocking microservice for generating fake JSON data.

The Contrast Triangle
Tool for simultaneously checking text, link, and background contrast. This one also has shareable links for specific tests.

Shieldfy
Automated security assistant that integrates with GitHub to show you potential vulnerabilities in your code.

puppeteer-in-electron
Use puppeteer to test and control your Electron application.

Site Builders, CMS's, Static Sites, etc.

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 

LiveCanvas
Pure HTML and CSS WordPress builder that uses Bootstrap 4 and helps pages achieve better SEO results.

React Blog
A blogging system built on React where the blog posts are individual GitHub issues.

Calcapp
A cloud-based app designer enabling you to create apps without having to do any programming.

Factor JS
A JavaScript CMS platform that lets you build powerful and professional JavaScript applications fast.

NoCo
Enterprise-grade, no-code platform for Node or React developers. Generate code for most of your app, and only write the parts that make your product unique.

Sitebot
Create a personal website in a few minutes by just chatting. Seems to require Facebook Messenger login.

Webcodesk
A powerful visual development tool for building React apps. It's tightly coupled to the React API, so the knowledge translates directly.

BuilderX
A browser based design tool that codes React Native and React for you.

gatsby-plugin-next-seo
A plug-in that makes managing your SEO easier in Gatsby projects.

lego
A fast static site generator that generates optimised, performant websites.

Kodular
A drag-and-drop no-code app builder.

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 a tech conference that you were going to attend has been cancelled, you might want to check out 40 Conferences Gone Virtual, by Spokable, which is tracking which conferences are happening online.

Thanks to everyone for subscribing and reading!

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

When creating interfaces using HTML's Drag and Drop API (various aspects of which I've covered in recent issues), it's important to note that some elements on a web page are already 'draggable' by default. And you've no doubt noticed this. The spec explains that the following elements are draggable by default:

• A text selection
• An image
• An `a` element with an `href` attribute

In other words, the browser will automatically set the draggable value to true or false based on what kind of element it is. Try this CodePen demo to see the effect in action. Notice a few things in the demo:

• No draggable attributes on the three elements
• I'm using the Window.getSelection() method to get the selected text after the drag operation begins
• I'm using preventDefault() when the drop is made to ensure the browser doesn't think something suspicious is happening. If I didn't include this, you'd see a warning before the browser tries to navigate to whatever you drag.

Now on to this week's tools!
 

Front-end Frameworks

A No-Code Drag and Drop Form Builder
Get a lifetime membership to 123FormBuilder's Gold plan for a one-time fee of $39.99 (usually $299.88/year). 20 forms/month, 5000 submissions/month, 1000+ form templates, integration with Google Sheets, MailChimp, Dropbox, and more.  promoted 

HTML / Sass Jumpstart
Minimal, themeable, and scalable Sass/HTML template site. Powered by node-sass and includes stylelint, Prettier, and Autoprefixer, hot-reload via Browsersync.

H3
A microframework to build client-side single-page applications (SPAs) in modern JavaScript.

Fast Cart
A Woocommerce PWA platform for building fast loading, mobile-friendly e-commerce websites.

98.css
A CSS library for building retro interfaces that look like Windows 98.

Shorthand
A utility-based CSS framework that allows you to make unique and modern designs without writing any CSS.

Reactron
A tiny Electron project configured to work with React as the front end. The project has the minimum code necessary to start a new app.

Orbit
An open source design system that includes a whole slew of components and utilities for use in your next travel-based app or website.

vue-composable
General purpose Vue Composition API composable and reactive components written in TypeScript.

Hook
A dark HTML landing page template built with the aforementioned Shorthand CSS framework.

LitElement Starter Template
A minimal starter template for a web components app built with LitElement, TypeScript, and Parcel for bundling.

Reach UI
A set of React components to build accessible React-based design systems.

Testing and Debugging Tools

ES6 for Everyone by Wes Bos is 50% Off!
The master package includes 77 HD videos, part of 21 modules – and course updates are free forever.   promoted 

Eruda
Now at version 2+. A console for testing and debugging on mobile browsers.

CursedChrome
This can be used for malicious purposes, so be wary. A Chrome-extension implant that turns victim Chrome browsers into fully-functional HTTP proxies, allowing you to browse sites as your victims.

postMessage-tracker
A Chrome extension to track postMessage usage (URL, domain, and stack) both by logging using CORS and also visually as an extension icon.

Tempomat
Native macOS app for monitoring continuous integration systems.

Will it CORS?
Test if a URL is CORS friendly (i.e. it's safe to send and the response can be read).

Pointer Latency
Tests the delay of pointermove events in the current web browser and demonstrates the usefulness/uselessness of pointer prediction.

axios
A well-known tool but I've never included it here. A Promise-based HTTP client for the browser and Node.

FinDOM-XSS
A fast and simple DOM based XSS vulnerability scanner via a Shell script.

EventReduce Browser Demo
A browser demo where the EventReduce algorithm is used in different browser databases so you can test out the performance gains of different queries.

Insomnia
Now at version 7+. API design platform plus REST and GraphQL client.

JavaScript Utilities

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 

emoji-regex
A regular expression to match all Emoji-only symbols as per the Unicode Standard.

Hegel
An advanced static type checker for JavaScript with optional type annotations and is able to prevent runtime type errors.

Rosetta
A general purpose internationalization library in 292 bytes.

SAMD
A tiny, static AMD API implementation that allows including AMD modules in regular script tags.

Flipswitch.js
Pure ES6 library for clipping fixed positioned elements on scroll.

useMemoValue()
Reuse the previous version of a value unless it has changed.

Notyf
A small (~3KB) JavaScript library for toast notifications. Responsive, accessible, dependency-free, and easy to integrate with React, Angular and Vue.

gen-esm-wrapper
CLI tool that makes it easier for module authors to support both ES modules and CommonJS modules for Node.js.

prray
'Promisified' Array, compatible with normal arrays, but comes with support for async methods (e.g. mapAsync).

qrcode-generator
QR code generator implementation in JavaScript, Java, and more.

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...

Miss the office? Say no more.

Thanks to everyone for subscribing and reading!

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