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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🆕 Vue.js Logos: masteringjs.io/tutorials/vue… #JavaScript #CodeNewbie
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Love our tutorials? Sign up for our weekly newsletter and never miss a tutorial! getrevue.co/profile/masterin…
AngularJS EOL: the end of an era 😢 infoworld.com/article/364660… #JavaScript #100DaysOfCode
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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…
By default, JavaScript objects' `toString()` returns "[object Object]". Not useful Usually, the easiest fix is `JSON.stringify()`, but `Object.entries()` and Node.js' `require('util').inspect()` also work well Learn more 👉 masteringjs.io/tutorials/fun… #JavaScript #CodeNewbie
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`42.toString()` throws a SyntaxError in JavaScript Wrap numbers in parens `()` if you want to call methods on a number literal Learn more 👉 masteringjs.io/tutorials/fun… #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…
Mastering JS retweeted
Mastering JS@mastering_js
18 Jan 2022
The first 100% FREE Vue.js Conference is around the corner! 🎉 Join the @vuejsnation and explore the vast @vuejs ecosystem in 2022! Date: 26th & 27th January Tickets: FREE ✅ Interact with industry leaders LIVE including Evan You and Sebastien Chopin! vuejsnation.com/
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Replying to @vuejsnation @vuejs
Love our tutorials? Sign up for our weekly newsletter and never miss a tutorial! getrevue.co/profile/masterin…
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🆕 How to Clear an Array in JavaScript: masteringjs.io/tutorials/fun… #JavaScript #CodeNewbie
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Be careful about using `trimStart()` and `trimEnd()` in JavaScript. These methods are relatively new additions to JavaScript, and break in older browsers and Node.js versions. Use `replace()` instead. Learn more 👉 masteringjs.io/tutorials/fun… #JavaScript #CodeNewbie
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Remember: don't use tools that are made for "enterprise" devs if you're a solo dev. Using Angular 2 for a side project is like using a cargo tanker to go to the grocery store #JavaScript #CodeNewbie
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Love our tutorials? Sign up for our weekly newsletter and never miss a tutorial! getrevue.co/profile/masterin…
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🆕 How to Check if a Variable is an Integer in JavaScript: masteringjs.io/tutorials/fun… #JavaScript #CodeNewbie
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Pro tip: you can pass arbitrary options to Mongoose's `populate()` function. This is useful for cases when you want to avoid infinite recursion in `populate()`. Learn more 👉 masteringjs.io/tutorials/mon… #MongoDB #NodeJS #CodeNewbie
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Pro tip: you can avoid a bad version of a package by using `<` in semver #JavaScript #CodeNewbie
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RegExp pro tip: `^` at the start of a set negates the set. For example, below is how you can test whether a string does NOT start with 'A'. 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…
Sinon stubs have a `getCall()` method that returns information about a particular time the stub was called, including `args` and `returnValue`. Learn more 👉 masteringjs.io/tutorials/sin… #JavaScript #CodeNewbie
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