vue中用H5实现文件上传的方法实例代码

        

         
        
        上传
        删除
       

// 上传图片
  'fileSelected': function () {
   var that = this
   let files = document.getElementById('fileToUpload').files
   if (files && files.length) {
    var fd = new FormData()
    fd.append('file', files[0])
    var reader = new window.FileReader()
    // 图片大小 100KB
    var fileSize = 100 * 1024
    reader.readAsDataURL(files[0])
    reader.Onload= function (e) {
     if (e.target.result.length > fileSize) {
      that.$dispatch('show-alert', 'msg_1016')
      document.getElementById('fileToUpload').value = ''
     } else {
      var xhr = new XMLHttpRequest()
      xhr.addEventListener('load', that.uploadComplete, false)
      xhr.open('POST', that.$root.appBaseUrl + 'fileUpload/singleFileUpload')
      xhr.send(fd)
     }
    }
   }
  },
  // 上传成功
  'uploadComplete': function (evt) {
   this.personInfo.photoUrl = (evt.target.responseText).replace('\\', '/')
   document.getElementById('fileToUpload').value = ''
  },
  // 删除图片
  'deleteImg': function () {
   this.personInfo.photoUrl = ''
  },

computed: {
  headPreFix: function () {
   let params = window.localdicts.dicts.ph_params.systemParam
   if (params.storageType === 1) {
    return params.storageUrl
   }
   return this.$root.appBaseUrl
  }
}