colorthief官网

https://lokeshdhakar.com/projects/color-thief/#examples

安装

npm i --save colorthief
yarn add colorthief

使用案例

<template>
  <div class="box app" :style="{ background: bodyBgColor }">
    <div class="img-item" v-for="(img, index) in imgArr" :key="index" @click="imgClick(index)">
      <img :src="img" class="box" ref="img" />
    </div>
  </div>
</template>

<script>
import Colorthief from 'colorthief';
export default {
  data(){
    return {
      imgArr: [
        require('@/images/img1.jpeg'),
        require('@/images/img2.jpg'),
        require('@/images/img3.jpg'),
        require('@/images/img4.jpg'),
        require('@/images/img5.jpg')
      ],
      bodyBgColor: '#fff'
    }
  },
  methods: {
    async imgClick(i){
      const colorthief = new Colorthief();
      const imgElem = this.$refs.img[i];
      const colors = await colorthief.getPalette(imgElem, 3);
      this.bodyBgColor = `linear-gradient(rgb(${colors[0].join(',')}), rgb(${colors[1].join(',')}), rgb(${colors[2].join(',')}))`;
    }
  }
}
</script>

<style>
*{
  padding: 0;
  margin: 0;
}
html, body, .box {
  width: 100%;
  height: 100%;
}
.app{
  display: flex;
  align-items: center;
}
.img-item{
  height: 300px;
  flex: 1;
  border: 4px solid #f5f5f5;
  cursor: pointer;
}
</style>

图片案例