js數(shù)字向上取整和向下取整 js中向上取整函數(shù) 向上取整、向下取整什么意思？上下舍入功能數(shù)字只對(duì)小數(shù)點(diǎn)后不為零的數(shù)字進(jìn)行操作。如果給它一個(gè)整數(shù)，它將返回整數(shù)本身。對(duì)于十進(jìn)制非零的數(shù)字，操作如下：給定4.9，調(diào)用向下舍... 2021-03-13 3272次瀏覽
