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Math.round(11.5) 等于多少? Math.round(-11.5)等于多少? #44

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strongant opened this issue Apr 1, 2017 · 0 comments

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strongant commented Apr 1, 2017

Math.round(11.5) 等于12
Math.round(-11.5)等于-11
查看源码：
即将原来的数字加上0.5后再向下取整，所以，Math.round(11.5)的结果为12，Math.round(-11.5)的结果为-11

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