我还需要此功能，以了解如何设法立即显示图像.

I also needed this feature, some how I manage to display image instantly.

angular.module('HelloWorldApp', [])
   .controller('HelloWorldController', function($scope) {
       $scope.uploadavtar = function(files) {
        //var fd = new FormData();
        //Take the first selected file
        //fd.append("file", files[0]);
        
        var imagefile = document.querySelector('#file');
                if (imagefile.files && imagefile.files[0]) {
                    var reader = new FileReader();
                    reader.onload = function (e) {
                        $('#temp_image')
                            .attr('src', e.target.result);
                    };
                    reader.readAsDataURL(imagefile.files[0]);
                    this.imagefile = imagefile.files[0];
                }else{
                    console.log("Image not selected");
                }
        
        
      }
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="HelloWorldApp">
    <div ng-controller="HelloWorldController">
        <input type="file" id="file" onchange="angular.element(this).scope().uploadavtar(this.files)"/>
    </div>
      <img src="" id="temp_image" width="100">
    <div>
    </div>
</div>

我使用的是laravel + Angularjs，因此另一个与存储图像有关的帖子是: https://***.com/a/34830307/2815635

I was using laravel + Angularjs so another related post to store image is : https://***.com/a/34830307/2815635