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3 years ago
<!--
usage:
num:显示的数字
color字体颜色
width每个数字的宽度
height:字体高度
fontSize字体大小
<countup :num="123.453" color="#ff9e50" width='13' height='23' fontSize='23'></countup>
-->
<template>
<view class="number-box">
<block v-for="(myIndex, index) in indexArr" :key="index">
<swiper class="swiper" vertical="true" :current="myIndex" circular="true" v-bind:style="{color:color,width:myIndex == 10 ? '7px' : width+'px',height:height+'px',lineHeight:fontSize+'px',fontSize:fontSize+'px'}">
<swiper-item>
<view class="swiper-item">0</view>
</swiper-item>
<swiper-item>
<view class="swiper-item">1</view>
</swiper-item>
<swiper-item>
<view class="swiper-item">2</view>
</swiper-item>
<swiper-item>
<view class="swiper-item">3</view>
</swiper-item>
<swiper-item>
<view class="swiper-item">4</view>
</swiper-item>
<swiper-item>
<view class="swiper-item">5</view>
</swiper-item>
<swiper-item>
<view class="swiper-item">6</view>
</swiper-item>
<swiper-item>
<view class="swiper-item">7</view>
</swiper-item>
<swiper-item>
<view class="swiper-item">8</view>
</swiper-item>
<swiper-item>
<view class="swiper-item">9</view>
</swiper-item>
<swiper-item>
<view class="swiper-item">.</view>
</swiper-item>
</swiper>
</block>
</view>
</template>
<script>
export default {
props: {
num: [String, Number],
color: {
type: String,
default: '#000000'
},
width: {
type: String,
default: '15'
},
height: {
type: String,
default: '15'
},
fontSize: {
type: String,
default: '15'
}
},
data() {
return {
indexArr: []
};
},
created() {
let {
num
} = this;
let arr = new Array(num.toString().length);
arr.fill(0);
this.indexArr = arr;
},
watch: {
num: function(val, oldVal) {
// 处理新老数据长度不一样的情况
let arr = Array.prototype.slice.apply(this.indexArr);
let newLen = val.toString().length;
let oldLen = oldVal.toString().length;
if (newLen > oldLen) {
for (let i = 0; i < newLen - oldLen; i++) {
arr.push(0);
}
this.indexArr = arr;
}
if (newLen < oldLen) {
for (let i = 0; i < oldLen - newLen; i++) {
arr.pop();
}
this.indexArr = arr;
}
this.numChange(val);
}
},
mounted() {
//定时器作用:app显示数字滚动
this._time = setTimeout(() => {
this.numChange(this.num);
clearTimeout(this._time);
}, 50);
},
methods: {
/**
* 数字改变
* @value 数字
*/
numChange(num) {
let {
indexArr
} = this;
let copyIndexArr = Array.prototype.slice.apply(indexArr);
let _num = num.toString();
for (let i = 0; i < _num.length; i++) {
if (_num[i] === '.') {
copyIndexArr[i] = 10;
} else {
copyIndexArr[i] = Number(_num[i]);
}
}
this.indexArr = copyIndexArr;
// this.log(this.indexArr);
}
}
};
</script>
<style lang="scss">
.number-box {
display: flex;
flex-wrap: wrap;
justify-content: center;
}
.swiper {
position: relative;
// line-height: 30upx;
// width: 30upx;
// height: 30upx;
// font-size: 30upx;
// background: red;
}
.swiper:after {
content: '';
position: absolute;
left: 0;
top: 0;
width: 100%;
height: 100%;
}
</style>