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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You don't need any outside libraries to compare whether one date is before another date in JavaScript. Because subtracting two date objects gives you the difference between the two dates in ms masteringjs.io/tutorials/fun… #JavaScript #CodeNewbie
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Bloated `devDependencies` slowing down your npm install? You can install just `dependencies`, avoiding `devDependencies`, with `npm install --production` #JavaScript #CodeNewbie
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🆕 Check What Arguments a Sinon Stub Was Called With masteringjs.io/tutorials/sin… #JavaScript #CodeNewbie
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To compare whether two date objects are equal in JavaScript, we recommend converting them to numbers using `valueOf()`. You can also convert them to strings using `toString()` for readability in test assertions. masteringjs.io/tutorials/fun… #JavaScript #CodeNewbie
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"Modern JavaScript" #JavaScript #CodeNewbie #100DaysOfCode
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Converting a decimal number to a binary string in JavaScript: masteringjs.io/tutorials/fun… #JavaScript #CodeNewbie
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🆕 How to Use the Sinon stub() Function masteringjs.io/tutorials/sin… #JavaScript #CodeNewbie
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Pro tip: `^` at the start of a set in a JavaScript RegExp negates the set. So `[^A]` matches any character that is NOT 'A'. Learn more: masteringjs.io/tutorials/fun… #JavaScript #CodeNewbie
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🆕 How to Check Whether a String Does Not Start With a Regex in JavaScript masteringjs.io/tutorials/fun… #JavaScript #CodeNewbie
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🆕 What Does `app.use(express.json())` Do in Express? masteringjs.io/tutorials/exp… #JavaScript #CodeNewbie
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🆕 Format a JavaScript Date to YYYY MM DD: masteringjs.io/tutorials/fun… #JavaScript #CodeNewbie
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Mastering JS retweeted
Mastering JS@mastering_js
4 Dec 2021
🆕 How to Parse URL in JavaScript into Host, Path, Search, and Hash 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…
🆕 How to Reverse an Array in JavaScript: masteringjs.io/tutorials/fun… #JavaScript #CodeNewbie
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🆕 The deleteMany() Function in Mongoose: masteringjs.io/tutorials/mon… #JavaScript #CodeNewbie
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🆕 How to Use Mongoose's updateMany() function: masteringjs.io/tutorials/mon… #JavaScript #CodeNewbie #MongoDB #NodeJS
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Mastering JS retweeted
Mastering JS@mastering_js
30 Oct 2021
🆕 Defining Plugins with Webpack: masteringjs.io/tutorials/web… #JavaScript #CodeNewbie
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