thinkphp5 不使用form，用input+ajax异步上传图片

不支持$this->request->file()获取图片

后台接收文件请使用$_FILE

正文开始：

HTML

<div class="upload">
  <div class="box-upload">
    <span>上传图片</span>
  </div>
  <input type="file" accept="image/*" name="img" class="uploadImg" value="">
  <img src="" alt="" >
</div>

JQUERY

$(".uploadImg").on("change",function () {

    var formData = new FormData();
    formData.append('img',this.files[0])


    $.ajax({
        url:'/module/controller/uploadImg',
        data:formData,
        contentType: false,
        processData: false,
        type:'post',
        dataType:'json',
        success:function (res) {
            console.log(res)
        }
    })
})