马币四舍五入

Question

寻求帮助，用js语言将钱四舍五入到最接近的0.05。

输入和预期输出：

1.10 => 1.10
1.11 => 1.10 (round down)
1.12 => 1.10 (round down)
1.13 => 1.15 (round up)
1.14 => 1.15 (round up)
1.15 => 1.15
1.16 => 1.15 (round down)
1.17 => 1.15 (round down)
1.18 => 1.20 (round up)
1.19 => 1.20 (round up)

发件人：https://www.bnm.gov.my/misc/-/asset_publisher/2BOPbOBfILtL/content/frequently-asked-questions-faqs-on-rounding-mechanism

Answer 1

您可以采用偏移量并采用多底值。

如果最后需要零，请取 .toFixed(2)。

const format = f => Math.floor((f + 0.025) * 20) / 20;

console.log([1.10, 1.11, 1.12, 1.13, 1.14, 1.15, 1.16, 1.17, 1.18, 1.19].map(format));

.as-console-wrapper { max-height: 100% !important; top: 0; }

马币四舍五入

MYR Currency Rounding

javascript

math

rounding