Comments (2)
This is the expected behavior and is a consequence of IEEE 754 being binary floating point.
> (17.450).toFixed(1)
"17.4"
> (17.451).toFixed(1)
"17.5"
> (17.450).toFixed(20)
"17.44999999999999928946"
As you can see, the value 17.45 in JavaScript is not exactly 17.45, but slightly below, and thus the rounded value to one decimal place is 17.4.
See also the discussion in #27.
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@mbostock Ah, I searched but did not find that thread. Excellent resource, thank you!
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