Per the Console Standard, `console.log("%f", ...)` should delegate to ECMAScript's %parseFloat()%. All browsers agree that `parseFloat(23)` prints "23", however in WebKit, `console.log("%f", 23)` prints "23.000000" (i.e., including an unnecessary number of zeros). If `console.log(%f)` were truly delegating to `parseFloat()`, then their outputs should be the same.
i think this was also fixed by 266020@main *** This bug has been marked as a duplicate of bug 259146 ***