---
title: Upload Files to the SurveyJS Storage
product: Form Library
description: SurveyJS Creator comes with a free full-scale demo for JavaScript and Azure storage that you can use to save your test forms. Have a try to make sure it has all you need, including the file upload question type that lets respondents attach a file in a required format to prove their response or as an answer to a certain question.
framework: Vue 3
source: https://surveyjs.io/form-library/examples/how-to-use-file-upload-question-in-survey-tool/vue3js
index: https://surveyjs.io/form-library/examples/overview.md
---

# Upload Files to the SurveyJS Storage (Vue 3)

## Files

### `public/index.html`

```html
<div id="app" style="position: absolute; top: 0; left: 0; right: 0; bottom: 0; height:100%"></div>
```

### `src/App.vue`

```html
<script lang="ts">


function detectIEOrEdge() {
    var ua = window.navigator.userAgent;
    var msie = ua.indexOf("MSIE ");
    var trident = ua.indexOf("Trident/");
    var edge = ua.indexOf("Edge/");
    return edge > 0 || trident > 0 || msie > 0;
}
</script>
<template>
    <SurveyComponent :model="survey" />
</template>
<script setup lang="ts">
    import { Model } from "survey-core";
    import { SurveyComponent } from "survey-vue3-ui";
    import "survey-core/survey-core.min.css";
    import "./index.css";
    import { json } from "./json";

    const survey = new Model(json);
    survey.onComplete.add((sender, options) => {
        console.log(JSON.stringify(sender.data, null, 3));
    });
    survey
        .onClearFiles
        .add(function (survey, options) {
            // Code to remove files stored on your service
            // SurveyJS Service doesn't allow to remove files
            options.callback("success");
        });
    
    // survey
    //     .onUploadFiles
    //     .add((survey, options) => {
    //         var formData = new FormData();
    //         options
    //             .files
    //             .forEach(function (file) {
    //                 formData.append(file.name, file);
    //             });
    //         var xhr = new XMLHttpRequest();
    //         xhr.responseType = "json";
    //         xhr.open("POST", "https://api.surveyjs.io/private/Surveys/uploadFiles?accessKey=<YOUR ACCESS KEY from the https://surveyjs.io/Help/Index?apiType=private>");
    //         xhr.onload = function () {
    //             var data = xhr.response;
    //             options.callback("success", options.files.map(file => {
    //                 return {
    //                     file: file,
    //                     content: data[file.name]
    //                 };
    //             }));
    //         };
    //         xhr.send(formData);
    //     });
    
    // survey
    //     .onDownloadFile
    //     .add((survey, options) => {
    //         var xhr = new XMLHttpRequest();
    //         xhr.responseType = "blob";
    //         xhr.open("GET", "https://api.surveyjs.io/private/Surveys/files?name=" + options.content);
    //         xhr.onload = function () {
    //             var reader = new FileReader();
    //             reader.onload = function (e) {
    //                 options.callback("success", e.target.result);
    //             };
    //             reader.readAsDataURL(new File([xhr.response], options.fileValue.name, {type: options.fileValue.type}));
    //         };
    //         xhr.send();
    //     });
    
    survey.onUploadFiles.add(function (survey, options) {
        options.files.forEach(file => {
            var formData = new FormData();
            formData.append('postId', 'cbd4f8b2-f9df-4eb0-99f7-2dcc61a41d03');
            formData.append("file", file);
            var xhr = new XMLHttpRequest();
            xhr.responseType = "json";
            xhr.open("POST", "https://api.surveyjs.io/public/v1/Survey/upload/");
            xhr.onload = () => {
                if (xhr.readyState === xhr.DONE) {
                    if (xhr.status === 200) {
                        const data = xhr.response;
                        var content = data.replace('dxsfile:', 'https://api.surveyjs.io/public/v1/Survey/file?filePath=');
                        if (data.indexOf("dxsimage:") === 0) {
                            content = data.replace('dxsimage:', 'https://api.surveyjs.io/public/v1/Survey/file?filePath=');
                        }
                        options.callback("success", [{
                            file: file,
                            content: content
                        }]);
                    }
                }
            };
            xhr.send(formData);
        });
    });
    
    
    survey.onDownloadFile.add((survey, options) => {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", options.content);
        xhr.onloadstart = function (ev) {
            xhr.responseType = "blob";
        }
        xhr.onload = () => {
            var file;
            if (detectIEOrEdge()) {
                file = new Blob([xhr.response], options.fileValue.name, { type: options.fileValue.type });
            }
            else {
                file = new File([xhr.response], options.fileValue.name, { type: options.fileValue.type });
            }
            var reader = new FileReader();
            reader.onload = function (e) {
                options.callback("success", e.target.result);
            };
            reader.readAsDataURL(file);
        };
        xhr.send();
    });
    
</script>
```

### `src/index.css`

```css
/* You can add your custom CSS here. */
```

### `src/json.ts`

```ts
export const json = {
  "elements": [
    {
      "type": "file",
      "title": "Please upload your files",
      "name": "files",
      "storeDataAsText": false,
      "allowMultiple": true,
      "maxSize": 102400
    }
  ]
};
```

### `src/main.ts`

```ts
import { createApp } from "vue";
import App from "./App.vue";

const app = createApp(App);
app.mount("#app");
```

### `src/shims-vue.d.ts`

```ts
/* eslint-disable */
declare module "*.vue" {
    import type { DefineComponent } from "vue"
    const component: DefineComponent<{}, {}, any>
    export default component
}
```

### `src/theme.ts`

```ts
export const themeJson = {};
```

### `.eslintrc.js`

```js
module.exports = {
    root: true,
    env: {
        node: true
    },
    extends: [
        "plugin:vue/vue3-essential",
        "eslint:recommended",
        "@vue/typescript/recommended",
        "@vue/prettier",
        "@vue/prettier/@typescript-eslint"
    ],
    parserOptions: {
        ecmaVersion: 2020
    },
    rules: {
        "no-console": process.env.NODE_ENV === "production" ? "warn" : "off",
        "no-debugger": process.env.NODE_ENV === "production" ? "warn" : "off"
    },
    overrides: [
        {
            files: [
                "**/__tests__/*.{j,t}s?(x)",
                "**/tests/unit/**/*.spec.{j,t}s?(x)"
            ],
            env: {
                jest: true
            }
        }
    ]
};
```

### `babel.config.js`

```js
module.exports = {
  presets: ["@vue/cli-plugin-babel/preset"]
};
```

### `package.json`

```json
{
  "name": "surveyjs-library-vue3",
  "version": "0.1.0",
  "scripts": {
    "serve": "vue-cli-service serve",
    "build": "vue-cli-service build",
    "lint": "vue-cli-service lint"
  },
  "dependencies": {
    "core-js": "^3.6.5",
    "tslib": "2.6.1",
    "vue": "^3.4.1",
    "survey-core": "latest",
    "survey-vue3-ui": "latest",
    "vue-router": "^4.0.0-0",
    "vuex": "^4.0.0-0"
  },
  "devDependencies": {
    "@typescript-eslint/eslint-plugin": "^2.33.0",
    "@typescript-eslint/parser": "^2.33.0",
    "@vue/cli-plugin-babel": "~4.5.0",
    "@vue/cli-plugin-eslint": "~4.5.0",
    "@vue/cli-plugin-pwa": "~4.5.0",
    "@vue/cli-plugin-router": "~4.5.0",
    "@vue/cli-plugin-typescript": "~4.5.0",
    "@vue/cli-plugin-vuex": "~4.5.0",
    "@vue/cli-service": "~4.5.0",
    "@vue/compiler-sfc": "^3.0.0",
    "@vue/eslint-config-prettier": "^6.0.0",
    "@vue/eslint-config-typescript": "^5.0.2",
    "@vue/test-utils": "^2.0.0-0",
    "eslint": "^6.7.2",
    "eslint-plugin-prettier": "^3.1.3",
    "eslint-plugin-vue": "^7.0.0-0",
    "node-sass": "^4.12.0",
    "prettier": "^1.19.1",
    "sass-loader": "^8.0.2",
    "typescript": "~3.9.3"
  }
}
```

### `tsconfig.json`

```json
{
  "compilerOptions": {
    "target": "esnext",
    "module": "esnext",
    "strict": true,
    "jsx": "preserve",
    "importHelpers": true,
    "moduleResolution": "node",
    "skipLibCheck": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "sourceMap": true,
    "baseUrl": ".",
    "types": [
      "webpack-env",
      "jest"
    ],
    "paths": {
      "@/*": [
        "src/*"
      ]
    },
    "lib": [
      "esnext",
      "dom",
      "dom.iterable",
      "scripthost"
    ]
  },
  "include": [
    "src/**/*.ts",
    "src/**/*.tsx",
    "src/**/*.vue",
    "tests/**/*.ts",
    "tests/**/*.tsx"
  ],
  "exclude": [
    "node_modules"
  ]
}
```

## Other Frameworks

- [Angular](https://surveyjs.io/form-library/examples/how-to-use-file-upload-question-in-survey-tool/angular.md)
- [React](https://surveyjs.io/form-library/examples/how-to-use-file-upload-question-in-survey-tool/reactjs.md)
- [jQuery](https://surveyjs.io/form-library/examples/how-to-use-file-upload-question-in-survey-tool/jquery.md)
- [Vanilla JS](https://surveyjs.io/form-library/examples/how-to-use-file-upload-question-in-survey-tool/vanillajs.md)