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Code Inspection: Comma expression

Reports comma expressions. Comma expressions are often a sign of overly clever code, and may lead to subtle bugs. Comma expressions in the initializer or update section of a for loop are ignored by this inspection.

In the following example, a potentially confusing one-line comma expression is rewritten using three separate statements:

return a++, b = myObject.someValue;
a++; b = myObject.someValue; return b;

See Comma operator (MDN) for details.

Last modified: 08 May 2020