usePrecision

分类

@Math

导出大小

212 B

包

@vueuse/math

上次更改

3 个月前

响应式地设置数字的精度。

用法

import { usePrecision
 } from '@vueuse/math'

const value
 = ref
(3.1415)
const result
 = usePrecision
(value
, 2) // 3.14

const ceilResult
 = usePrecision
(value
, 2, {
  math
: 'ceil'
}) // 3.15

const floorResult
 = usePrecision
(value
, 3, {
  math
: 'floor'
}) // 3.141

类型声明

export interface UsePrecisionOptions {
  /**
   * Method to use for rounding
   *
   * @default 'round'
   */
  math
?: "floor" | "ceil" | "round"
}
/**
 * Reactively set the precision of a number.
 *
 * @see https://vueuse.org.cn/usePrecision
 *
 * @__NO_SIDE_EFFECTS__
 */
export declare function usePrecision
(
  value
: MaybeRefOrGetter
<number>,
  digits
: MaybeRefOrGetter
<number>,
  options
?: MaybeRefOrGetter
<UsePrecisionOptions>,
): ComputedRef
<number>