实际开发过程中遇到的js方法

1.递归方法实现树形结构

1formatCompanyTree(data, id) {
2      const newData = data.filter(
3        item => item.pid == id
4      ).map(item => ({
5        ...item,
6        disabled: item.nodetype != '4',
7        children: this.formatCompanyTree(data, item.id)
8      }))
9      return newData
10    },
11
12//data为后台请求回来的树形数据，id为树形数据的最外层节点的id
13
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2.elementUI文件上传

1    uploadFile(file) {
2      const fileData = new FormData()
3       // 需要的参数
4      fileData.append('file', file.file)
5      fileData.append('resourceType', that.resourceType)
6      fileData.append('receiptsinfoId', that.receiptsinfoId)
7      this.$api
8        .uploadFile(fileData)
9        .then(res => {
10          if (res.code == 0) {
11            that.$message({
12              type: 'success',
13              message: '上传成功！'
14            })
15          }
16        })
17    },