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17 - 计数器 #3121

@Goody-5566

Description

@Goody-5566
<script setup lang='ts'>
import { ref } from 'vue'

interface UseCounterOptions {
  min?: number
  max?: number
}

/**
 * Implement the composable function
 * Make sure the function works correctly
*/
function useCounter(initialValue = 0, options: UseCounterOptions = {}) {
  const count = ref(initialValue)
  const { min, max } = options
  const inc = () => count.value <= min ? void 0 : count.value--;
  const dec = () => count.value >= max ? count.value : count.value++;
  const reset = () => count.value = initialValue
  return { count, inc, dec, reset }
}

const { count, inc, dec, reset } = useCounter(0, { min: 0, max: 10 })

</script>

<template>
  <p>Count: {{ count }}</p>
  <button @click="inc">
    inc
  </button>
  <button @click="dec">
    dec
  </button>
  <button @click="reset">
    reset
  </button>
</template>

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