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How am I getting 339 as output of the following code ?

console.log(3 + '4' + 5 - 6)

can anyone please explain me?

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3 + "4" yields "34" due to the implicit string conversion. Implicit string conversion seems to have higher priority than implicit number conversion.

"34" + 5 yields "345"

"345" - 6 yields 339 due to the implicit number conversion

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3 Comments

"Implicit string conversion seems to have higher priority than implicit number conversion." no, it's just processed left-to-right and that's the first operation: 1 + 2 + "3" is "33" because the first operation is 1 + 2 and then it's 3 + "3". There is no priority of conversions.
If there's no string in play, there's no need for conversion.
You said that there was some priority to the conversion. There isn't. It's just processing the operations in sequence. And a <number> + <string> will always convert to a string.

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