element-plus/packages/slider/src/useMarks.ts

A Component Library for Vue3.0

import { computed } from 'vue'
import { ISliderProps, Mark } from './slider.type'


export const useMarks = (props: ISliderProps) => {
  return computed(() => {
    if (!props.marks) {
      return []
    }

    const marksKeys = Object.keys(props.marks)
    return marksKeys.map(parseFloat)
      .sort((a, b) => a - b)
      .filter(point => point <= props.max && point >= props.min)
      .map((point): Mark => ({
        point,
        position: (point - props.min) * 100 / (props.max - props.min),
        mark: props.marks[point],
      }))
  })
}