笔记

//
  const arr = [1,2,3,4,2,1,3,5,6,3]
  const arr2 = []
  const s = new Set()
  arr.forEach(x => s.add(x));
  for(i of s){
    arr2.push(i)
  }
  console.log(arr2)


//简单粗暴
[...new Set(array)]

//使用ajax上传图片使用form标签
并且加上 enctype="multipart/form-data"
传入时
$(".picDiv").on('change','.file1',function () {
      var formData = new FormData()
      formData.append('file',public1)
      var token = localStorage.getItem('token')
      $.ajax({
        url:${url}/temFileUpload?fileName=head_url,
        type: 'POST',
        data:formData,
        headers:{
          "Accept": "*/*",
          "Authorization":token,
        },
        cache: false,  
        contentType: false,  
        processData: false,
        success: function(data){
          headURL = data.data.head_url
        }
      })
    })

//使用ajax上传数组数据时

  data:{},
  traditional : true,  //用来序列化数组
  headers: {
      "Accept": "*/*",
      'Content-Type': 'application/x-www-form-urlencoded',
      "Authorization":token,
  },
  type:'POST',
  dataType: "JSON",