// ✅ Ternary works # Ternary does not work. a = (a === undefined) ? a : b;
The code in this segment is backwards - you're setting a to a only if it is undefined, and using b in all other cases.
a
undefined
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The code in this segment is backwards - you're setting
a
toa
only if it isundefined
, and using b in all other cases.