Mastering JS@mastering_js

Bite sized JavaScript tutorials for busy developers Follow us on Substack: masteringjs.substack.com

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masteringjs.io
Joined May 2021
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🆕 Convert JSON to YAML: masteringjs.io/tutorials/too… #JavaScript #CodeNewbie
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Browser tools are great for solving one-off problems: ⏩ Nothing to install 😎 (Hopefully) intuitive UI means no docs to read 🔎 Searchable on Google Check out our decimal to binary converter 👉 masteringjs.io/tutorials/fun… #JavaScript #CodeNewbie
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Mastering JS retweeted
Mastering JS@mastering_js
14 Feb 2022
Pro tip: you can use `filter()` to quickly determine the difference between 2 sets in JavaScript More about `filter()` 👉 masteringjs.io/tutorials/fun… #JavaScript #CodeNewbie
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Love our tutorials? Sign up for our weekly newsletter and never miss a tutorial! getrevue.co/profile/masterin…
🆕 Convert Binary to Decimal: masteringjs.io/tutorials/too… #JavaScript #CodeNewbie
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Pro tip: if you want to do distributed locking in Mongoose, use `findOneAndUpdate()`, not a separate `findOne()` and `update()`. `findOneAndUpdate()` is atomic, whereas `findOne()` then `update()` is a race condition 👉 masteringjs.io/tutorials/mon… #MongoDB #CodeNewbie
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Need to make an environment variable falsy from the command line? Just do `env MY_ENV_VAR=` . That way MY_ENV_VAR will be an empty string, which is falsy. More about falsy in JavaScript 👉 masteringjs.io/tutorials/fun… #NodeJS #MongoDB #JavaScript
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Mastering JS retweeted
Mastering JS@mastering_js
8 Feb 2022
🆕 Sleep in NodeJS: masteringjs.io/tutorials/nod… #JavaScript #NodeJS #CodeNewbie
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The Mastering JS website is 100% open source. Check it out on GitHub, and please star our repo! github.com/mastering-js/mast…
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Easiest way to compare if 2 arrays of JavaScript primitives (strings, numbers, etc.) are equal: masteringjs.io/tutorials/fun… #JavaScript #CodeNewbie
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Pro tip: if you want to make a Vue component show up and are too lazy to configure the app state to show the component, you can always just put the v-show logic behind a computed property, and make that computed property always return true. #VueJS #CodeNewbie
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🆕 How to Use Mocks with Sinon: masteringjs.io/tutorials/sin… #JavaScript #CodeNewbie
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Love our tutorials? Sign up for our weekly newsletter and never miss a tutorial! getrevue.co/profile/masterin…
7 years later, we finally understand the difference between spies and stubs in Sinon 😎 masteringjs.io/tutorials/sin… #JavaScript #CodeNewbie
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The Mastering JS website is 100% open source. Check it out on GitHub, and please star our repo! github.com/mastering-js/mast…
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Tired of pasting the same URL all over your #VueJS codebase? Just put it on `app.config.globalProperties`, makes it easy to access the same static property in every component. #JavaScript #CodeNewbie
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Mastering JS retweeted
Mastering JS@mastering_js
2 Feb 2022
Annoying #VueJS gotcha that cost us some time recently: you can't name a component "footer". Worked around it by naming it "footer-component" github.com/vuejs/vue/issues/… #JavaScript #CodeNewbie
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The Mastering JS website is 100% open source. Check it out on GitHub, and please star our repo! github.com/mastering-js/mast…
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