Asked • 06/19/19

Why does javascript accept commas in if statements?

I stumbled across some javascript syntax that seemed like it should produce a parse error of some kind but doesn't: if (true, true) {console.log('splendid')} else {console.log('horrid')} // splendid if (true, false) {console.log('splendid')} else {console.log('horrid')} // horrid It seems only the last expression affects the logic, though all expressions are executed: if (console.log('super'), true) {console.log('splendid')} // super splendid Anyone know why that is valid javascript syntax? Is there any practical use for it?

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