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JS常用函数
葵花宝典
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工作中常用到的函数收集到此处,方便查看, 不断更新……..

JS小数取整函数

  1. 丢弃小数部分,保留整数部分
    parseInt(7/2)
  2. 向上取整,有小数就整数部分加1
    Math.ceil(7/2)
  3. 四舍五入
    Math.round(7/2)
  4. 向下取整
    Math.floor(7/2)
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