Frontend>In The News

How to write your first unit test in JavaScript

CommunityNews

CommunityNews

How to write your first unit test in JavaScript

How to write your first unit test in JavaScript | Snyk.
Testing code is the first step to making it secure. One of the best ways to do this is to use unit tests, ensuring that each of the smaller functions within an app behave as they should — especially when the app receives edge-case or invalid inputs, or inputs that are potentially harmful.

Read in full here:

This thread was posted by one of our members via one of our news source trackers.

View thread on forum
/js#test
0 1019 0

Where Next?

View thread on forum
js
test
Home Frontend>In The News
/js#test
0 1019 0
Last post

Popular Frontend topics Top

First poster: bot
Frontend>In The News

Haskell for the Elm Enthusiast
Many years ago NRI adopted Elm as a frontend language. We started small with a disposable proof of concept, and as the engineering team i...
blog.noredink.com
/haskell/elm
0 1325 0
New
First poster: bot
Frontend>In The News

State of the Web: Deno
State of the Web: Deno. What is Deno, why does it matter, and how is it currently used for server-side JavaScript?
byteofdev.com
#web/deno
0 1292 0
New
First poster: bot
Frontend>In The News

Recommendations when publishing a WASM library
Recommendations when publishing a Wasm library. A set of recommendations to make publishing a Javascript library that uses Wasm internal...
nickb.dev
#library/wasm
0 1083 0
New
First poster: bot
Frontend>In The News

TypeScript and Set Theory
TypeScript and Set Theory . How does set theory help to understand type assignability and resolution in TypeScript?
ivov.dev
/typescript
2 1096 0
New
First poster: bot
Frontend>In The News

Why React Re-Renders
Why React Re-Renders. In React, we don’t update the DOM directly, we tell React what we want the DOM to look like, and React tackles the...
joshwcomeau.com
/react
0 1066 0
New
First poster: bot
Frontend>In The News

TypeScript is terrible for library developers
Typescipt is terrible for library developers. We spend a disproportionate amount of time on types
erock.prose.sh
/typescript#library
0 981 0
New
First poster: bot
Frontend>In The News

Writing composable SQL using JavaScript
Writing composable SQL using JavaScript by Gajus Kuizinas. A walkthrough of common patterns of writing SQL queries in JavaScript with th...
contra.com
/js#sql#writing
0 950 0
New
First poster: bot
Frontend>In The News

Chrome Browser Exploitation, Part 1: Introduction to V8 and JavaScript Internals
Chrome Browser Exploitation, Part 1: Introduction to V8 and JavaScript Internals. Web browsers, our extensive gateway to the internet. B...
jhalon.github.io
/js#chrome#browser
0 1084 0
New
First poster: bot
Frontend>In The News

Cooking with TypeScript: a collection of patterns for TypeScript 4.8
GitHub - adamshaylor/cooking-with-typescript: A collection of patterns for TypeScript 4.8. A collection of patterns for TypeScript 4.8. ...
github.com
/typescript#cooking
0 906 0
New
First poster: joeb
Frontend>In The News

React Won by Default – And It's Killing Frontend Innovation
Exploring how React’s dominance by default stifles frontend innovation, and why deliberate framework choices lead to better tools for per...
lorenstew.art
/react#frontend
5 898 4
New

Other popular topics Top

PragmaticBookshelf
General Dev>Learning Resources

A Common-Sense Guide to Data Structures and Algorithms, Second Edition
Algorithms and data structures are much more than abstract concepts. Mastering them enables you to write code that runs faster and more e...
pragprog.com
#pragprog/python/ruby#published-book/book-a-common-sense-guide-to-data-structures-and-algorithms-second-edition#math#algorithms/js
19 6022 5
New
AstonJ
General Dev>Dev Chat

Languages Without Garbage Collection
Continuing the discussion from Thinking about learning Crystal, let’s discuss - I was wondering which languages don’t GC - maybe we can c...
#garbage-collection
21 5575 7
New
Margaret
General Dev>Dev Chat

PragProg’s Medium Posts
Hello everyone! This thread is to tell you about what authors from The Pragmatic Bookshelf are writing on Medium.
#pragprog#blog-post
1147 29841 760
New
rustkas
Backend>Chat

Using Regular Expressions in Erlang
Intensively researching Erlang books and additional resources on it, I have found that the topic of using Regular Expressions is either c...
/erlang#regular-expressions
91 5662 43
New
AstonJ
General Dev>Hardware

CharaChorder - type at the speed of thought?
Saw this on TikTok of all places! :lol: Anyone heard of them before? Lite:
/keyboards#charachorder
13 4703 4
New
PragmaticBookshelf
Backend>Learning Resources

Effective Haskell
Build efficient applications that exploit the unique benefits of a pure functional language, learning from an engineer who uses Haskell t...
pragprog.com
#pragprog/haskell#published-book/book-effective-haskell
15 10218 1
New
PragmaticBookshelf
Community>In The Spotlight

Spotlight: Dmitry Zinoviev (Author) Interview and AMA!
Author Spotlight Dmitry Zinoviev @aqsaqal Today we’re putting our spotlight on Dmitry Zinoviev, author of Data Science Essentials in ...
#author-spotlight/python/book-complex-network-analysis-in-python/book-data-science-essentials-in-python/book-resourceful-code-reuse/book-pythonic-programming
33 5211 14
New
PragmaticBookshelf
Community>In The Spotlight

Spotlight: Peter Ullrich (Author) Interview and AMA!
Author Spotlight: Peter Ullrich @PJUllrich Data is at the core of every business, but it is useless if nobody can access and analyze ...
/elixir/phoenix/book-building-table-views-with-phoenix-liveview
72 4765 21
New
PragmaticBookshelf
Backend>Learning Resources

Engineering Elixir Applications
Develop, deploy, and debug BEAM applications using BEAMOps: a new paradigm that focuses on scalability, fault tolerance, and owning each ...
pragprog.com
#pragprog/elixir#published-book/book-engineering-elixir-applications
40 7136 21
New
sir.laksmana_wenk
Game Dev>Questions

I want to learn how make a game, but where should I start?
I’m able to do the “artistic” part of game-development; character designing/modeling, music, environment modeling, etc. However, I don’t...
#game-dev
15 4965 9
New
Back to top

Sponsor Spotlight

Manning

Develop your skills with books, videos, and courses.

Latest in JavaScript

JavaScript Portal ❯

Frontend>In The News

Frontend In The News ❯

Latest on Devtalk

Devtalk ❯

We ❤️ helpful members!

We reward our most helpful members via our MOTM scheme - by giving away a whopping 25 books per year!

Member of the Month

Devtalk Sponsors

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

Honeybadger

Real-time error tracking, performance insights, and observability for devs.

EEF

Supporting innovation across the BEAM ecosystem.

coders51

We build reliable cloud platforms for business-critical systems.

Manning Publications

Develop your skills with books, videos, and courses.

AppSignal

Catch errors, track performance, monitor hosts and more.

WyeWorks

Enabling companies to succeed by building software people love.

Pragmatic Studio

Courses that move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

Categories:

Sub Categories:

Popular Portals

Devtalk Sponsors

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

Honeybadger

Real-time error tracking, performance insights, and observability for devs.

EEF

Supporting innovation across the BEAM ecosystem.

coders51

We build reliable cloud platforms for business-critical systems.

Manning Publications

Develop your skills with books, videos, and courses.

AppSignal

Catch errors, track performance, monitor hosts and more.

WyeWorks

Enabling companies to succeed by building software people love.

Pragmatic Studio

Courses that move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

We're in Beta

About us Mission Statement See our Roadmap