How to upload image in vuejs?

Question

Please below is my code in the scripting section of my vue component.

I correctly understood all the input fields, but when loading images and videos, empty values ​​are displayed.

I tried to solve this problem, but to no avail.

        playVideo(url) {
            let video = $('#video-preview').get(0);
            video.preload = 'metadata';
            // Load video in Safari / IE11
            if (url) {
                video.muted = false;
                video.playsInline = true;
                video.play();
            }
        },

        // Read a file input as a data URL.
        readDataUrl(input, callback) {
            if (input.files && input.files[0]) {
                let fileReader = new FileReader();
                fileReader.onload = function () {
                    callback(fileReader.result);
                };
                fileReader.readAsDataURL(input.files[0]);
            }
            else {
                callback(null);
            }
        },

        // Read a file input as an object url.
        readObjectUrl(input, callback) {
            if (input.files && input.files[0]) {
                let fileReader = new FileReader();
                fileReader.onload = function () {
                    let blob = new Blob([fileReader.result], {type: input.files[0].type});
                    let url = URL.createObjectURL(blob);
                    callback(url, blob);
                };
                fileReader.readAsArrayBuffer(input.files[0]);
            }
            else {
                callback(null);
            }

        },

    }

}

What I want to achieve is to upload an image and a video file, preview them before saving them as a blob object.

The image above shows my @samayo answer

The image and video block display blank values.

Answer 1

If you use axiosor fetch, downloading files using vue is pretty simple.

This is a copy / pasta from my current project. I use axios to upload images:

, :

<input type="file" accept="image/*" @change="uploadImage($event)" id="file-input">

:

methods: {

  uploadImage(event) {

    const URL = 'http://foobar.com/upload'; 

    let data = new FormData();
    data.append('name', 'my-picture');
    data.append('file', event.target.files[0]); 

    let config = {
      header : {
        'Content-Type' : 'image/png'
      }
    }

    axios.put(
      URL, 
      data,
      config
    ).then(
      response => {
        console.log('image upload response > ', response)
      }
    )
  }
}

Answer 2

, ,

:

<template>
   <div>
      <img src:"previewImage" class="uploading-image" />
      <input type="file" accept="image/jpeg" @change=uploadImage>
   </div>
</template>

<script>
    export default {
        name:'imageUpload',
        data(){
            return{
               previewImage:null
            }
        },
        methods:{
            uploadImage(e){
                const image = e.target.files[0];
                const reader = new FileReader();
                reader.readAsDataURL(image);
                reader.onload = e =>{
                    this.previewImage = e.target.result;
                    console.log(this.previewImage);
                };
            }
        }
     }  // missing closure added
</script>



<style>
   .uploading-image{
     display:flex;
   }
 </style>

Answer 3

If you want to download an image and preview it before sending it , you can use a simple and functional way if necessary.

<template>
  <input type="file" accept="image/*" @change="onChange" />
  <div id="preview">
    <img v-if="item.imageUrl" :src="item.imageUrl" />
  </div>
</template>


<script>
export default {
  name: 'imageUpload',
  data() {
    return {
      item:{
          //...
          image : null
          imageUrl: null
      }
    }
  },
  methods: {
    onChange(e) {
      const file = e.target.files[0]
      this.image = file
      this.item.imageUrl = URL.createObjectURL(file)
    }
  }
} 
</script>