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vue3封装数值动态递增组件
- 前言
- 源码
- 举个例子:
前言
1)使用技术:
vue3.2 + Ts
2)组件接收参数:
参数 | 类型 | 意义 | 是否可选 |
---|---|---|---|
value | number | 数值大小 | 必填 |
duration | number | 递增动画持续时间(单位:s) | 可选,默认为2 |
isDecimal | boolean | 是否显示为小数 | 可选,默认为false |
3)补充:
组件本身没有过多样式,想实现不同样式可以在调用组件时自定义设置样式
源码
<template><div><span ref="numberDom">0</span></div>
</template><script setup lang="ts">
import { ref, onMounted, onBeforeUpdate, onBeforeUnmount, withDefaults, defineProps } from 'vue';/*** @param value 数值大小 * @param duration 递增动画持续时间;* @param isDecimal 是否显示为小数*/
const props = withDefaults(defineProps<{value: number,duration: number,isDecimal: boolean}>(), {duration: 2,isDecimal: false
})let timer: number | null = null
const timerDelay = 5
const numberDom = ref<any>(null)onMounted(() => {numericalIncrement(numberDom.value)
})
onBeforeUpdate(() => {if (timer) {clearInterval(timer!)timer = null}numericalIncrement(numberDom.value)
})
onBeforeUnmount(() => {if (timer) {clearInterval(timer!)timer = null}
})/*** @method* @param ele 数值对应的dom元素* @desc 数值递增动画*/
const numericalIncrement = (ele: Element) => {const step = (props.value * timerDelay) / (props.duration * 1000)let current: number = 0let start: number = 0let flag: boolean = falsetimer = setInterval(() => {start += stepif (start >= props.value) {flag = props.isDecimalclearInterval(timer!)start = props.valuetimer = null}current = startif (flag) {ele.innerHTML = current.toString().replace(/(\d)(?=(?:\d{3}[+]?)+$)/g, '$1,')} else {ele.innerHTML = current.toFixed(0) .toString().replace(/(\d)(?=(?:\d{3}[+]?)+$)/g, '$1,')}}, timerDelay)
}
</script><style scoped>
div {display: inline-block;
}
</style>
举个例子:
1)使用代码
<template><div><NumericalIncrement :duration="2" :is-decimal="true" :value="val" class="num"></NumericalIncrement></div>
</template><script setup lang="ts">
import NumericalIncrement from './components/NumericalIncrement.vue'
import {ref,onMounted} from 'vue';
const val = ref(110)
onMounted(()=>{setTimeout(()=>{val.value=200},3000)
})
</script><style scoped>
.num {min-width: 40px;text-align: center;font-size: 20px;background-color: orange;color:#fff;
}
</style>
2)效果
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