vue 检测用户上传图片宽高的方法

  picArray:[
  {
   width:0,
   height:0
  },
  {
   width:0,
   height:0
  },
  {
   width:0,
   height:0
  },
  {
   width:0,
   height:0
  },
  {
   width:0,
   height:0
  },
  {
   width:0,
   height:0
  }
  ],

<myupload :keys="index" @getBase="getUpImg">
    
</myupload>

 getUpImg(imgurl, keys){
  if(keys === 9){
  this.submitData.logo_img = imgurl
  this.logoImgCount = true
  } else {
  Vue.set(this.imgListArray,keys,imgurl)
  
  this.$nextTick(function(){
   let img = document.getElementById('picId' + keys)
   // console.log(img)
   let picArray = this.picArray
   img.onload = function () {
   console.log(keys)
   console.log(this.naturalWidth)
   console.log(this.naturalHeight)
   let o = {
    width: this.naturalWidth,
    height: this.naturalHeight
   }
   Vue.set(picArray,keys,o)
   console.log('picArray', picArray)
   }
  })
  }  
 },

 imageCheck(){
  let checkboolean = true
  let check = {
  'width': [[540],[0,540]],
  'height': [[330],[0,330]]
  }
  let f1 = function (num,index,type) {
  let n = num
  let i = index
  let t = type
  let b = false
  // console.log(n,i,t)
  for (let x = 0; x < check[type][i].length; x++) {
   if (check[type][i][x] === num) {
   // console.log('>>>>>>>>>>>>>' + check[type][i][x] + '===' + num + '>>>>>>>>>>>>>>>>' )
   b = true
   }   
  }
  return b
  }
  for (let i = 0; i < this.picArray.length; i++) {

  let cb = true

  for (let x in this.picArray[i]) {
   let number = this.picArray[i][x]
   // console.log(x,number)
   if (x === 'width' && i < 3) {
   checkboolean = f1(number, 0, 'width')
   if (!checkboolean) {
    // console.log('=================',i,x,number,'return false')
    cb = false
    break
   }
   } else if (x === 'width' && i >= 3) {
   checkboolean = f1(number, 1, 'width')
   if (!checkboolean) {
    // console.log('=================',i,x,number,'return false')
    cb = false
    break
   }
   } else if (x === 'height' && i < 3) {
   checkboolean = f1(number, 0, 'height')
   if (!checkboolean) {
    // console.log('=================',i,x,number,'return false')
    cb = false
    break
   }
   } else if (x === 'height' && i >= 3) {
   checkboolean = f1(number, 1, 'height')
   if (!checkboolean) {
    // console.log('=================',i,x,number,'return false')
    cb = false
    break
   }
   }
  }

  if (!cb) {
   break
  }
  }
  return checkboolean
 },


// sumbit function
...
  if(!this.imageCheck()){
  this.$message({
   message: this.MASSAGE_imagecheck,
   type: 'error'
  });
  return false
  }
  alert('可以传图')
...