vue.js 中更改的文件输入

Using plain HTML/JS, it is possible to view the JavaScript File objects of selected files for an input element like so:

<input type="file" id="input" multiple onchange="handleFiles(this.files)">

However, when converting it to the 'Vue' way it doesn't seem to work as intend and simply returns undefined instead of returning an Array of File objects.

This is how it looks in my Vue template:

<input type="file" id="file" class="custom-file-input" 
  v-on:change="previewFiles(this.files)" multiple>

Where the previewFiles function is simply the following (located in methods):

  methods: {
    previewFiles: function(files) {
      console.log(files)
    }
  }

Is there an alternate/correct way of doing this? Thanks

解决方案

Another solution:

<input type="file" @change="previewFiles" multiple>

methods: {
   previewFiles(event) {
      console.log(event.target.files);
   }
}