Vue实战：图片上传组件开发

<template>
  <div>
    <input
      type="file"
      @change="handleFileChange"
    />
    <button @click="upload">上传</button>
    <div v-if="uploading">
      <div>{{ progress }}%</div>
      <button @click="cancel">取消上传</button>
    </div>
    <div v-if="uploadSuccess">
      上传成功！
      <a :href="resultURL" target="_blank">查看结果</a>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      file: null,
      uploading: false,
      progress: 0,
      uploadSuccess: false,
      resultURL: ''
    };
  },
  methods: {
    handleFileChange(event) {
      this.file = event.target.files[0];
    },
    upload() {
      this.uploading = true;
      // 假装上传，每秒增加10%的进度，共耗时10秒
      const timer = setInterval(() => {
        this.progress += 10;
        if (this.progress >= 100) {
          clearInterval(timer);
          this.uploading = false;
          this.uploadSuccess = true;
          this.resultURL = 'http://example.com/result';
        }
      }, 1000);
    },
    cancel() {
      this.uploading = false;
      this.progress = 0;
      this.uploadSuccess = false;
    }
  }
};
</script>

<style scoped>
/* 样式省略 */
</style>

<template>
  <div id="app">
    <ImageUpload />
  </div>
</template>

<script>
import ImageUpload from "./components/ImageUpload.vue";

export default {
  name: "App",
  components: {
    ImageUpload
  }
};
</script>

<style>
/* 样式省略 */
</style>