微信小程序中的店铺评分组件及vue中用svg实现的评分显示组件

<!-- (size * stars.length + (size/2) * 4 + 20 )这里的话，是在可以点击的时候，加上了好评的字体的长度 -->
<view class='starsBox' style='width:{{isClick"{{stars}}" wx:key="{{index}}">
  <image src="/UploadFiles/2021-04-02/{{item == 0 ">

子组件index.wxss




.starsBox{
 display: flex;
 align-items: center;
 justify-content: flex-start;
}
.stars{
 width: 150rpx;
 height: 50rpx;
 display: flex;
 align-items: center;
 justify-content: flex-start;
}
.stars image{
 width: 30rpx;
 height: 30rpx;
}
.text{
 color: #ccc;
 margin-left: 20rpx;
}


子组件index.js




Component({
 properties: {
 /* 显示有色星星的个数 */
 value: {
  type: Number,
  value: 0,
  /* 监听value值的变化 */
  observer: function (newVal, oldVal, changedPath) {
  this.init()
  }
 },
 /* 设置星星大小 */
 size: {
  type: Number,
  value: 30
 },
 /* 是否可点击，type为null表示值可以是任意类型 */
 isClick: {
  type: null,
  value: false
 }
 },
 attached() {
 /* 组件生命周期函数，在组件实例进入页面节点树时执行 */
 this.init();
 },
 data: {
 stars: [0, 0, 0, 0, 0]
 },
 methods: {
 init() {
  let star = this.properties.value;
  let stars = [0, 0, 0, 0, 0];
  /* 图片名称，通过设置图片名称来动态的改变图片显示 */
  for (let i = 0; i < Math.floor(star); i++) {
  stars[i] = 'star';
  }
  if (star > Math.floor(star)) {
  stars[Math.floor(star)] = 'halfStar';
  }
  for (let i = 0; i < stars.length; i++) {
  if (stars[i] == 0) {
   stars[i] = 'grayStar';
  }
  }
  this.setData({
  stars
  })
 },
 /* 可点击时，用于计算分数 */
 computeScore(e) {
  let index = e.currentTarget.dataset.index;
  let isClick = this.data.isClick;
  if (isClick) {
  let score = index + 1;
  this.triggerEvent('compute', {
   score
  });
  }
 }
 }
})


3.父组件中引用
父组件index.wxml




<view class="score">
 <view class="scoreItem">
  <score value="{{shopGrade}}" size="46" isClick="true" bindcompute="computeGrade" />
 </view>
 <view class="scoreItem">
  <score value="{{shopGrade1}}" size="46" /> 
 </view>
</view>


父组件index.json




{
 "usingComponents": {
  "score": "/component/score/index"
 }
}


父组件index.js




data: {
 shopGrade: 0,
 shopGrade1: 4.6,
},
/* 评分处理事件 */
computeGrade(e) {
 let score = e.detail.score;
 this.setData({
  shopGrade: score
 })
},


4.vue中使用svg实现评分
首先在vue使用的index.html的模板文件中添加一个rem转换算法，因为我后面用的单位是rem




/* 在头部添加 */
<script type="text/javascript">
   document.getElementsByTagName("html")[0].style.fontSize = 100 / 750 * window.screen.width + "px";
  </script>


然后添加svg.vue文件，这个svg文件可以自己找图片生成，并设置对应的id




<template>
  <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" style="position:absolute;width:0;height:0;visibility:hidden">
    <defs>
      <symbol id="star" viewBox="0 0 32 32">
        <path class="path1" d="M16 26.382l-8.16 4.992c-1.5 0.918-2.382 0.264-1.975-1.435l2.226-9.303-7.269-6.218c-1.337-1.143-0.987-2.184 0.755-2.322l9.536-0.758 3.667-8.835c0.674-1.624 1.772-1.613 2.442 0l3.667 8.835 9.536 0.758c1.753 0.139 2.082 1.187 0.755 2.322l-7.269 6.218 2.226 9.303c0.409 1.71-0.485 2.347-1.975 1.435l-8.16-4.992z">
        </path>
      </symbol>
    </defs>
  </svg>
</template>
<script></script>
<style></style>


rating.vue文件引用svg.vue




<template>
  <div class="ratingstar">
    <section class="star_container">
      <svg class="grey_fill" v-for="(num,index) in 5" :key="index">
        <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#star" rel="external nofollow" rel="external nofollow" ></use>
      </svg>
    </section>
    <div class="star_overflow" :style="'width:'+rating*2/10+'rem'">
      <section class="star_container">
        <svg class="orange_fill" v-for="(num,index) in 5" :key="index">
          <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#star" rel="external nofollow" rel="external nofollow" ></use>
        </svg>
      </section>
    </div>
    <svgIcon></svgIcon>
  </div>
</template>

<script>
 import svgIcon from '@/components/svg'
 export default {
  components: {
   svgIcon
  },
  data() {
    return {
      rating: 4.2
    }
  },
 }
</script>
<style lang="less" rel="stylesheet/less" scoped>
  .ratingstar {
    position: relative;
    width: 100%;
    .star_overflow {
      overflow: hidden;
      position: relative;
      height: 0.65rem;
    }
    .star_container {
      position: absolute;
      top: 0.05rem;
      width: 1rem;
      display: flex;
      justify-content: flex-start;
      align-items: center;
      .grey_fill {
        width: 0.94rem;
        height: 0.2rem;
        fill: #d1d1d1;
      }
      .orange_fill {
        width: 0.94rem;
        height: 0.2rem;
        fill: #ff9a0d;
      }
    }
  }
</style>


总结
以上所述是小编给大家介绍的微信小程序中的店铺评分组件及vue中用svg实现的评分显示组件，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！