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caspringer 2018-11-27 17:25:58 -05:00 • committed by GitHub
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@ -82,7 +82,7 @@ alert( Number(false) ); // 0
Please note that `null` and `undefined` behave differently here: `null` becomes a zero, while `undefined` becomes `NaN`.
````smart header="Addition '+' concatenates strings"
Almost all mathematical operations convert values to numbers. With a notable exception of the addition `+`. If one of the added values is a string, then another one is also converted to a string.
Almost all mathematical operations convert values to numbers. With a notable exception of the addition `+`. If one of the added values is a string then the other one is also converted to a string.
Then it concatenates (joins) them: