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Discussion on: 8 JavaScript Tips & Tricks That No One Teaches 🚀

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strativd profile image
Strat Barrett •

I'm a big fan of !! which gets the boolean value of (pretty much) anything:

let truthiness = !!12       //=> true
let truthiness = !!0        //=> false
let truthiness = !!'string' //=> true
let truthiness = !!''       //=> false
// BUT LOOK OUT FOR OBJECTS... 👀
let truthiness = !![]       //=> true
let truthiness = !!{}       //=> true
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! is the opposite so !! becomes the boolean value !! 😄

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parkio profile image
Chris •

The Boolean() constructor is another great way to interpret falsey values.

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garvitmotwani profile image
Garvit Motwani •

Thanks for sharing! 🙏🙏

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