[JavaScript知识库]记录下elementui 上传图片的代码块

直接贴了
我改了一丢丢

<template>
  <div class="write">
    
    <el-upload 
        ref="upload"
      action="/img-upload"
      list-type="picture-card"
      :auto-upload="false"
      :on-preview="handlePictureCardPreview"
      :on-remove="handleRemove"
      :http-request="imgsubmit"
      :before-upload="beforeImgUpload"
    >  
      <i class="el-icon-plus"></i>
    </el-upload>
    <el-dialog :visible.sync="dialogVisible">
      <img ref="upload" width="100%" :src="dialogImageUrl" alt="" />
    </el-dialog>
    <el-button  @click="submitupload" type="submit">点击上传</el-button>
  </div>
</template>

<script>
export default {
  data() {
    return {
      dialogImageUrl: "",
      dialogVisible: false,
    };
  },
  methods: {
    handleRemove(file, fileList) {
      console.log(file, fileList);
    },
    handlePictureCardPreview(file) {
      this.dialogImageUrl = file.url;
      this.dialogVisible = true;
    },
    
    beforeImgUpload(file, fileList) {
      let _this = this;
      //每次改变时，做检测
      let regs = /.+?(\.jpg|\.png|\.jpeg|\.gif)/g;
      let isImg = regs.test(file.name);
      if (!isImg) {
        this.$message.error("请上传正确的图片格式");
        return false;
      }
    },
    imgsubmit(param){
        let _this = this;
      let formData = new FormData();
      formData.append("file", param.file);
      this.axios
        .post("/img-upload", formData)
        .then((res) => {
          let type;
          if (res.data.code == 200) {
            _this.previewImages.push(res.data.data.catalog);
 
            type = "success";
          } else {
            type = "error";
          }
          _this.$message({
            message: res.data.error,
            type: type,
          });
        });

    },
    submitupload(){
        this.$refs.upload.submit();
        console.log(this.$refs.upload.submit)
        console.log(fileList)
    }
  },
};

</script>

<style scoped>
</style>