I can't read the && part. How does that affect the result of the expression?
_1st == '0' ? TENS[_2nd] : TENS[_2nd] && TENS[_2nd] + '-' || ''
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j08691
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user2585040
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The && is a short-circuited logical "AND" expression. It means that if the first condition is true check the second. If the first is false, stop and report that the overall expression is false.
Scott Marcus
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what is the first condition in this case? – user2585040 Oct 31 '16 at 18:42
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See rewritten line: https://jsfiddle.net/0jdou7vw/ – terales Oct 31 '16 at 18:49
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oh that's the long hand of it? thank you. that makes it easier to understand for a beginner. – user2585040 Oct 31 '16 at 19:17