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Check the MIME type of File before Upload it in Vue Uploader component

14 Apr 2021 / 1 minute to read

By using uploading event, you can get the file MIME type before uploading it to server. In the below sample, file MIME type is shown in the alert box before file start to upload.

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app.vue
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<template>
  <div>
    <ejs-uploader ref="uploadObj" id='defaultfileupload' name="UploadFiles"  :autoUpload="autoUpload" :asyncSettings= "path" :uploading="onBeforeUpload"></ejs-uploader>
  </div>
</template>
<script>
import Vue from 'vue';
import { UploaderPlugin } from '@syncfusion/ej2-vue-inputs';
Vue.use(UploaderPlugin);

export default {
  data: function(){
        return {
          path:  {
            saveUrl: 'https://ej2.syncfusion.com/services/api/uploadbox/Save',
            removeUrl: 'https://ej2.syncfusion.com/services/api/uploadbox/Remove'
          },
            autoUpload: false
        }
    },
    methods: {
onBeforeUpload: function(args): void {
 // get the file MIME type
    alert("File MIME type is: " + args.fileData.rawFile.type)
}
    }
}
</script>
<style>
@import "../../node_modules/@syncfusion/ej2-base/styles/material.css";
@import "../../node_modules/@syncfusion/ej2-buttons/styles/material.css";
@import "../../node_modules/@syncfusion/ej2-vue-inputs/styles/material.css";
 #container {
        padding-left: 5%;
        width: 100%;
    }
    #loader {
        color: #008cff;
        font-family: 'Helvetica Neue','calibiri';
        font-size: 14px;
        height: 40px;
        left: 45%;
        position: absolute;
        top: 45%;
        width: 30%;
    }
</style>