How to use addition assignment (+=) in JavaScript

1 Answer

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let n = 10;
let s = 'java';

console.log(n += 9); // 19
console.log(n += true); // 20
console.log(n += false); // 20
console.log(n += 3); // 23

console.log(s += 'script'); // javascript



/*
run:

19
20
20
23
javascript

*/

 



answered Nov 12, 2020 by avibootz

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