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icncsx
icncsx

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Assignment has a return value in JS

#javascript #programming #tutorial 
console.log(b=1) // 1
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Because assignment has a return value, we are able to chain assignments.

let a; let b; a = b = 1 console.log(a); // 1 console.log(b); // 1
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Hard to read, but it works...

let a = 1; let b = 2; let c = 3 - (a = b + 1); console.log(a); // 3 console.log(c); // 0
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Top comments (2)

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John Noels •

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Arpple •

I think it's for REPL, so it will show the final result for assignment as well

> a = 1 + 2 3
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