vue-star中怎么实现一个评星组件，针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。
star文件夹下建立Star.vue，及相关的图片信息。便于组件的就近维护
Star.vue：
<template>
<div class="star" :class="starSize">
<span v-for="(itemClass,key) in itemClasses" :class="itemClass" class="star-item"></span>
</div>
</template>
<script>
const LENGTH = 5;
const CLS_ON = 'on';
const CLS_HALF = 'half';
const CLS_OFF = 'off';
export default{
props:{
size:{ //尺寸，24,36,48
type: Number
},
score:{
type: Number
}
},
computed:{
starSize(){
return 'star-'+ this.size;
},
itemClasses(){
let result = [];
let score = Math.floor(this.score*2)/2; //将数值调整为整数及.5的形式，例：4.3 => 4；4.6 => 4.5
let hasDecimal = score %1 !==0;
let integer = Math.floor(score);
for(let i =0;i<integer;i++){
result.push(CLS_ON);
}
if(hasDecimal){
result.push(CLS_HALF);
}
while(result.length<LENGTH){
result.push(CLS_OFF);
}
return result;
}
}
}
</script>
<style lang="stylus" rel="stylesheet/stylus">
@import "../../common/stylus/mixin.styl";
.star
font-size: 0
.star-item
display: inline-block
background-repeat: no-repeat
&.star-48
.star-item
width: 20px
height: 20px
margin-right: 22px
background-size: 20px 20px
&.last-child
margin-right: 0
&.on
bg-image('star48_on')
&.half
bg-image('star48_half')
&.off
bg-image('star48_off')
&.star-36
.star-item
width: 15px
height: 15px
margin-right: 6px
background-size: 15px 15px
&.last-child
margin-right: 0
&.on
bg-image('star36_on')
&.half
bg-image('star36_half')
&.off
bg-image('star36_off')
&.star-24
.star-item
width: 10px
height: 10px
margin-right: 3px
background-size: 10px 10px
&.last-child
margin-right: 0
&.on
bg-image('star24_on')
&.half
bg-image('star24_half')
&.off
bg-image('star24_off')
</style>Header.vue：
<star :size="48" :score="3.5"></star>
<script>
import star from '../star/Star.vue'
export default{
components:{
star
}
}
</script>mixin.styl：
bg-image($url)
background-image: url($url + '@2x.png')
@media (-webkit-min-device-pixel-ratio: 3),(min-device-pixel-ratio:3)
background-image: url($url + '@3x.png')关于vue-star中怎么实现一个评星组件问题的解答就分享到这里了，希望以上内容可以对大家有一定的帮助，如果你还有很多疑惑没有解开，可以关注编程网行业资讯频道了解更多相关知识。
