<div style="width:200px;height:200px;"> <label for="ceshi" style="display:block;">  <img style="width:200px;height:200px;" id="image" src=""/>  <input id="ceshi" type="file" onchange="selectImage(this);" hidden/> </label></div>

 var image = ''; function selectImage(file){ if(!file.files || !file.files[0]){   return; } var reader = new FileReader(); reader.onload = function(evt){  document.getElementById('image').src = evt.target.result;  image = evt.target.result; } reader.readAsDataURL(file.files[0]); } function uploadImage(){  console.log(image);  $.ajax({   type:'POST',   url: 'ajax/uploadimage', //圖片上傳地址   data: {image: image},   async: true,   dataType: 'json',   success: function(data){   if(data.success){    alert('上傳成功');   }else{   alert('上傳失敗');   }  },  error: function(err){   alert('網絡故障');  } });}