Vue JS Image Upload with Preview

Vue js image upload preview; Through this tutorial, i am going to guide you how show image preview before upload in vue js.

Vue JS Image Upload with Preview

Just follow the following steps and display image preview before upload in vue Js app:

  • Step 1 – Create New VUE JS App
  • Step 2 – Create Image Preview Component
  • Step 3 – Import Component on App.vue

Step 1 – Create New VUE JS App

In this step, open your terminal and execute the following command to create new vue js app:

vue create vue-image-upload-preview

Step 2 – Create Image Preview Component

Go to /src/components directory and create a new component called file-preview.vue and add the following code into it:

<template>
  <div>
    <div
      class="imagePreviewWrapper"
      :style="{ 'background-image': `url(${previewImage})` }"
      @click="selectImage">
    </div>
    <input
      ref="fileInput"
      type="file"
      @input="pickFile">
  </div>
</template>
<script>
export default {
  data() {
      return {
        previewImage: null
      };
    },
  methods: {
      selectImage () {
          this.$refs.fileInput.click()
      },
      pickFile () {
        let input = this.$refs.fileInput
        let file = input.files
        if (file && file[0]) {
          let reader = new FileReader
          reader.onload = e => {
            this.previewImage = e.target.result
          }
          reader.readAsDataURL(file[0])
          this.$emit('input', file[0])
        }
      }
  }
}
</script>
<style scoped lang="scss">
.imagePreviewWrapper {
    width: 250px;
    height: 250px;
    display: block;
    cursor: pointer;
    margin: 0 auto 30px;
    background-size: cover;
    background-position: center center;
}
</style>

Step 3 – Import Component on App.vue

Go to /src/ directory and App.vue file. And then add the following code into it:

<template>
    <FilePreview></FilePreview>
</template>
<script>
import FilePreviewfrom './components/FilePreview';
export default {
  components: {
    FilePreview
  }
}
</script>

Conclusion

Vue js image upload with preview example. In this tutorial, you have learned how display image preview before upload in vue js.

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