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uni_modules/wot-design-uni/components/wd-count-to/index.scss

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+@import '../common/abstracts/variable';
+@import '../common/abstracts/mixin';
+
+
+.wd-count-to{
+  vertical-align: bottom;
+}

uni_modules/wot-design-uni/components/wd-count-to/types.ts

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+import type { ComponentPublicInstance, ExtractPropTypes } from 'vue'
+import { baseProps, makeBooleanProp, makeNumberProp, makeStringProp } from '../common/props'
+import type { TextType } from '../wd-text/types'
+
+export const countToProps = {
+  ...baseProps,
+
+  // 字体大小
+  fontSize: makeNumberProp(16),
+
+  // 文本颜色
+  color: makeStringProp(''),
+  /**
+   * 主题类型
+   * 类型：string
+   * 可选值：'default' /'primary' / 'error' / 'warning' / 'success'
+   * 默认值：'default'
+   */
+  type: makeStringProp<TextType>('default'),
+  /**
+   * 起始值
+   * 类型：number
+   * 默认值：0
+   */
+  startVal: makeNumberProp(0),
+
+  /**
+   * 最终值
+   * 类型：number
+   * 默认值：2021
+   */
+  endVal: makeNumberProp(2024),
+
+  /**
+   * 从起始值到结束值数字变动的时间，单位毫秒
+   * 类型：number
+   * 默认值：3000
+   */
+  duration: makeNumberProp(3000),
+  /**
+   * 是否自动开始
+   * 类型：boolean
+   * 默认值：true
+   */
+  autoStart: makeBooleanProp(true),
+  /**
+   * 保留的小数位数
+   * 类型：number
+   * 默认值：0
+   * 校验：大于等于0
+   */
+  decimals: {
+    type: Number,
+    required: false,
+    default: 0,
+    validator(value: number) {
+      return value >= 0
+    }
+  },
+
+  // 小数点
+  decimal: makeStringProp('.'),
+
+  // 三位三位的隔开效果
+  separator: makeStringProp(','),
+
+  /**
+   * 前缀
+   * 类型：string
+   * 默认值：''
+   * @example '¥' 人民币前缀
+   */
+  prefix: makeStringProp(''),
+
+  /**
+   * 后缀
+   * 类型：string
+   * 默认值：''
+   */
+  suffix: makeStringProp(''),
+
+  /**
+   * 是否具有连贯性
+   * 类型：boolean
+   * 默认值：true
+   */
+  useEasing: makeBooleanProp(true),
+
+  /**
+   * 自定义根节点样式
+   */
+  customStyle: makeStringProp(''),
+
+  /**
+   * 自定义根节点样式类
+   */
+  customClass: makeStringProp('')
+}
+
+export type CountDownProps = ExtractPropTypes<typeof countToProps>
+
+export type CountUpExpose = {
+  /**
+   * 开始倒计时
+   */
+  start: () => void
+  /**
+   * 暂停倒计时
+   */
+  pause: () => void
+  /**
+   * 重设倒计时，若 auto-start 为 true，重设后会自动开始倒计时
+   */
+  reset: () => void
+}
+
+export type CountToInstance = ComponentPublicInstance<CountDownProps, CountUpExpose>

uni_modules/wot-design-uni/components/wd-count-to/wd-count-to.vue

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+<template>
+  <view :class="rootClass">
+    <!-- 前缀插槽 -->
+    <slot name="prefix">
+      <wd-text :type="props.type" :color="props.color" :size="`${props.fontSize * 0.7}px`" :text="props.prefix"></wd-text>
+    </slot>
+    <!-- 默认文本插槽 -->
+    <slot>
+      <wd-text :type="props.type" :color="props.color" :size="`${props.fontSize}px`" :text="timeText"></wd-text>
+    </slot>
+    <!-- 后缀插槽 -->
+    <slot name="suffix">
+      <wd-text :type="props.type" :color="props.color" :size="`${props.fontSize * 0.7}px`" :text="props.suffix"></wd-text>
+    </slot>
+  </view>
+</template>
+
+<script lang="ts">
+export default {
+  name: 'wd-count-to',
+  options: {
+    virtualHost: true,
+    addGlobalClass: true,
+    styleIsolation: 'shared'
+  }
+}
+</script>
+
+<script lang="ts" setup>
+import wdText from '../wd-text/wd-text.vue'
+import { computed, watch, onMounted } from 'vue'
+import { countToProps } from './types'
+import { easingFn, isNumber } from '../common/util'
+import { useCountDown } from '../composables/useCountDown'
+import type { CountDownExpose } from '../wd-count-down/types'
+
+const props = defineProps(countToProps)
+const emit = defineEmits(['mounted', 'finish'])
+
+const { start, pause, reset, current } = useCountDown({
+  time: props.duration,
+  millisecond: true,
+  onFinish: () => emit('finish')
+})
+
+// 计算根元素的类名
+const rootClass = computed(() => {
+  return `wd-count-to ${props.customClass}`
+})
+
+const timeText = computed(() => {
+  return parseFormat(current.value.total)
+})
+
+watch([() => props.startVal, () => props.endVal, () => props.duration], resetTime, { immediate: false })
+
+onMounted(() => {
+  resetTime()
+  emit('mounted')
+})
+
+// 重置动画
+function resetTime() {
+  reset(props.duration)
+  if (props.autoStart) {
+    start()
+  }
+}
+
+function parseFormat(remain: number) {
+  const { startVal, endVal, duration, useEasing } = props
+  const progress = duration - remain // 已经进行的时间
+  const isPositive = startVal > endVal // 判断startVal是否大于endVal
+  const progressRatio = progress / duration // 计算进度比例
+
+  let currentVal: number
+
+  if (useEasing) {
+    // 使用缓动函数计算currentVal
+    if (isPositive) {
+      currentVal = startVal - easingFn(progress, 0, startVal - endVal, duration) || 0
+    } else {
+      currentVal = easingFn(progress, startVal, endVal - startVal, duration)
+    }
+  } else {
+    // 不使用缓动函数时的计算方式
+    if (isPositive) {
+      currentVal = startVal - (startVal - endVal) * progressRatio
+    } else {
+      currentVal = startVal + (endVal - startVal) * progressRatio
+    }
+  }
+  // 确保currentVal在startVal和endVal之间
+  currentVal = isPositive ? Math.max(endVal, currentVal) : Math.min(endVal, currentVal)
+  return formatNumber(currentVal)
+}
+
+// 格式化数字
+function formatNumber(num: any): string {
+  if (typeof num !== 'number') {
+    num = parseFloat(num)
+    if (isNaN(num)) {
+      return '0'
+    }
+  }
+  num = num.toFixed(props.decimals)
+  const parts = num.split('.')
+  let integerPart = parts[0]
+  const decimalPart = parts.length > 1 ? props.decimal + parts[1] : ''
+  const rgx = /(\d+)(\d{3})/
+
+  if (props.separator && !isNumber(props.separator)) {
+    while (rgx.test(integerPart)) {
+      integerPart = integerPart.replace(rgx, '$1' + props.separator + '$2')
+    }
+  }
+  return integerPart + decimalPart
+}
+
+defineExpose<CountDownExpose>({ start, reset: resetTime, pause })
+</script>
+
+<style lang="scss" scoped>
+@import './index.scss';
+</style>