---
title: Use Panels to Group Related Questions
product: Form Library
description: A panel is a section within a form that contains multiple questions. By adding panels into your surveys or forms, you can effectively group related questions together. This enables you to conveniently modify the settings of multiple questions at once. Explore this free demo for JavaScript to learn more.
framework: Angular
source: https://surveyjs.io/form-library/examples/set-properties-on-multiple-questions-using-panel/angular
index: https://surveyjs.io/form-library/examples/overview.md
---

# Use Panels to Group Related Questions (Angular)

If your survey or form contains related questions, you can organize them in groups to give respondents context and help them better understand the purpose of each question. A survey element that groups other survey elements on a page is Panel. This demo shows how to create and configure panels.

## Create a Panel

To add a panel to your survey or form, define an object with the `type` property set to `"panel"` and add it to the [`elements`](https://surveyjs.io/form-library/documentation/pagemodel#elements) array. Within this object, specify the panel's [`title`](https://surveyjs.io/form-library/documentation/api-reference/panel-model#title) and a unique [`name`](https://surveyjs.io/form-library/documentation/api-reference/panel-model#name) that identifies the panel. Optionally, you can specify a [`description`](https://surveyjs.io/form-library/documentation/api-reference/panel-model#description) to place under the `title`.

To add questions to a panel, declare a nested [`elements`](https://surveyjs.io/form-library/documentation/api-reference/panel-model#elements) array and populate it with question configurations. Since panels can be nested one into another, the `elements` array can also contain configurations of other panels.

## Expand and Collapse Panels

Panels can be expanded and collapsed in code or in the UI. When collapsed, a panel displays only its `title` and `description`. To expand or collapse a panel, users should click its title. This feature helps you optimize screen space when your survey contains many questions.

To expand or collapse a panel, call its [`expand()`](https://surveyjs.io/form-library/documentation/api-reference/panel-model#expand) or [`collapse()`](https://surveyjs.io/form-library/documentation/api-reference/panel-model#collapse) method. To find out the current state of a panel and decide which method to call, use the [`isExpanded`](https://surveyjs.io/form-library/documentation/api-reference/panel-model#isExpanded) and [`isCollapsed`](https://surveyjs.io/form-library/documentation/api-reference/panel-model#isCollapsed) properties. Alternatively, you can call the [`toggleState()`](https://surveyjs.io/form-library/documentation/api-reference/panel-model#toggleState) method to toggle a panel's expand state. All these methods and properties belong to a [`PanelModel`](https://surveyjs.io/form-library/documentation/api-reference/panel-model) object instance. To access it, use [`SurveyModel`](https://surveyjs.io/form-library/documentation/api-reference/survey-data-model)'s [`getPanelByName()`](https://surveyjs.io/form-library/documentation/api-reference/survey-data-model#getPanelByName) method:

```js
import { Model } from "survey-core";

const surveyJson = {
  // ... 
  "elements": [{
    "type": "panel",
    "name": "myPanel",
    "elements": [ ... ]
  }]
};
const survey = new Model(surveyJson);
// Access a panel with a specified name
const myPanel = survey.getPanelByName("myPanel");
// Call `toggleState()` or any other `PanelModel` method
myPanel.toggleState();
```

To allow users to expand and collapse a panel, set its [`state`](https://surveyjs.io/form-library/documentation/api-reference/panel-model#state) property to `"expanded"` or `"collapsed"`, depending on the initial state you want. In this demo, you can expand and collapse both panels.

## Files

### `src/app/components/json.ts`

```ts
export const json = {
  "pages": [
    {
      "name": "page1",
      "elements": [
        {
          "type": "panel",
          "name": "personal-information",
          "title": "Personal Information",
          "state": "expanded",
          "elements": [
            {
              "type": "text",
              "name": "first-name",
              "title": "First name",
              "isRequired": true
            },
            {
              "type": "text",
              "name": "last-name",
              "startWithNewLine": false,
              "title": "Last name",
              "isRequired": true
            },
            {
              "type": "text",
              "name": "birthdate",
              "title": "Birthdate",
              "isRequired": true,
              "inputType": "date",
              "autocomplete": "bday",
              "maxValueExpression": "today()"
            },
            {
              "type": "dropdown",
              "name": "country",
              "startWithNewLine": false,
              "title": "Country",
              "choicesByUrl": {
                "url": "https://surveyjs.io/api/CountriesExample",
                "valueName": "name"
              }
            }
          ]
        },
        {
          "type": "panel",
          "name": "contact-information",
          "title": "Contact Information",
          "state": "expanded",
          "elements": [
            {
              "type": "text",
              "name": "email",
              "title": "E-mail address",
              "inputType": "email",
              "autocomplete": "email"
            },
            {
              "type": "text",
              "name": "phone",
              "startWithNewLine": false,
              "title": "Phone number",
              "inputType": "tel",
              "autocomplete": "tel"
            },
            {
              "type": "text",
              "name": "skype",
              "startWithNewLine": false,
              "title": "Skype"
            }
          ]
        }
      ]
    }
  ],
  "questionErrorLocation": "bottom"
};
```

### `src/app/components/survey.component.css`

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

### `src/app/components/survey.component.html`

```html
<survey [model]="model" style="position: absolute; top: 0; left: 0; right: 0; bottom: 0; height:100%"></survey>
```

### `src/app/components/survey.component.ts`

```ts
import { Component, OnInit } from "@angular/core";
import { Model } from "survey-core";
import { json } from "./json";
import "./survey.component.css";
import "survey-core/survey-core.min.css";

@Component({
    // tslint:disable-next-line:component-selector
    selector: "component-survey",
    templateUrl: "./survey.component.html",
    styleUrls: ["./survey.component.css"]
})
export class SurveyComponent implements OnInit {
    model: Model;
    ngOnInit() {
        const survey = new Model(json);
        survey.onComplete.add((sender, options) => {
            console.log(JSON.stringify(sender.data, null, 3));
        });
        this.model = survey;
    }
}
```

### `src/app/components/theme.ts`

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

### `src/app/app.component.css`

```css

```

### `src/app/app.component.html`

```html
<component-survey></component-survey>
```

### `src/app/app.component.ts`

```ts
import { Component } from "@angular/core";

@Component({
    selector: "app-root",
    templateUrl: "./app.component.html",
    styleUrls: ["./app.component.css"]
})
export class AppComponent {
    title = "CodeSandbox";
}
```

### `src/app/app.module.ts`

```ts
import { BrowserModule } from "@angular/platform-browser";
import { NgModule } from "@angular/core";

import { AppComponent } from "./app.component";
import { SurveyModule } from "survey-angular-ui";
import { SurveyComponent } from "./components/survey.component";

@NgModule({
    declarations: [AppComponent, SurveyComponent],
    imports: [BrowserModule, SurveyModule],
    providers: [],
    bootstrap: [AppComponent]
})
export class AppModule { }
```

### `src/environments/environment.prod.ts`

```ts
export const environment = {
    production: true
};
```

### `src/environments/environment.ts`

```ts
// The file contents for the current environment will overwrite these during build.
// The build system defaults to the dev environment which uses `environment.ts`, but if you do
// `ng build --env=prod` then `environment.prod.ts` will be used instead.
// The list of which env maps to which file can be found in `.angular-cli.json`.

export const environment = {
    production: false
};
```

### `src/index.html`

```html
<app-root></app-root>
```

### `src/main.ts`

```ts
import { enableProdMode } from "@angular/core";
import { platformBrowserDynamic } from "@angular/platform-browser-dynamic";

import { AppModule } from "./app/app.module";
import { environment } from "./environments/environment";

if (environment.production) {
    enableProdMode();
}

platformBrowserDynamic()
    .bootstrapModule(AppModule)
    .catch(err => console.log(err));
```

### `src/polyfills.ts`

```ts
/**
 * This file includes polyfills needed by Angular and is loaded before the app.
 * You can add your own extra polyfills to this file.
 *
 * This file is divided into 2 sections:
 *   1. Browser polyfills. These are applied before loading ZoneJS and are sorted by browsers.
 *   2. Application imports. Files imported after ZoneJS that should be loaded before your main
 *      file.
 *
 * The current setup is for so-called "evergreen" browsers; the last versions of browsers that
 * automatically update themselves. This includes Safari >= 10, Chrome >= 55 (including Opera),
 * Edge >= 13 on the desktop, and iOS 10 and Chrome on mobile.
 *
 * Learn more in https://angular.io/docs/ts/latest/guide/browser-support.html
 */

/***************************************************************************************************
 * BROWSER POLYFILLS
 */

/** IE9, IE10 and IE11 requires all of the following polyfills. **/
// import 'core-js/es6/symbol';
// import 'core-js/es6/object';
// import 'core-js/es6/function';
// import 'core-js/es6/parse-int';
// import 'core-js/es6/parse-float';
// import 'core-js/es6/number';
// import 'core-js/es6/math';
// import 'core-js/es6/string';
// import 'core-js/es6/date';
// import 'core-js/es6/array';
// import 'core-js/es6/regexp';
// import 'core-js/es6/map';
// import 'core-js/es6/weak-map';
// import 'core-js/es6/set';

/** IE10 and IE11 requires the following for NgClass support on SVG elements */
// import 'classlist.js';  // Run `npm install classlist.js`.

/** IE10 and IE11 requires the following for the Reflect API. */
// import 'core-js/es6/reflect';

/** Evergreen browsers require these. **/
// Used for reflect-metadata in JIT. If you use AOT (and only Angular decorators), you can remove.
import "core-js/proposals/reflect-metadata";

/**
 * Required to support Web Animations `@angular/platform-browser/animations`.
 * Needed for: All but Chrome, Firefox and Opera. http://caniuse.com/#feat=web-animation
 **/
// import 'web-animations-js';  // Run `npm install web-animations-js`.

/***************************************************************************************************
 * Zone JS is required by default for Angular itself.
 */
import "zone.js/dist/zone"; // Included with Angular CLI.

/***************************************************************************************************
 * APPLICATION IMPORTS
 */
```

### `src/styles.css`

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

### `src/typings.d.ts`

```ts
/* SystemJS module definition */
declare var module: NodeModule;
interface NodeModule {
    id: string;
}
```

### `.angular-cli.json`

```json
{
  "apps": [
    {
      "root": "src",
      "outDir": "dist",
      "assets": [ "assets", "favicon.ico" ],
      "index": "index.html",
      "main": "main.ts",
      "polyfills": "polyfills.ts",
      "prefix": "app",
      "styles": [ "styles.css" ],
      "scripts": [ ],
      "environmentSource": "environments/environment.ts",
      "environments": {
        "dev": "environments/environment.ts",
        "prod": "environments/environment.prod.ts"
      }
    }
  ]
}
```

### `_tsconfig.json`

```json
{
  "compileOnSave": false,
  "compilerOptions": {
    "baseUrl": "./",
    "outDir": "./dist/out-tsc",
    "sourceMap": true,
    "declaration": false,
    "allowSyntheticDefaultImports": true,
    "downlevelIteration": true,
    "experimentalDecorators": true,
    "moduleResolution": "node",
    "importHelpers": true,
    "resolveJsonModule": true,
    "target": "es2015",
    "module": "es2020",
    "lib": [
      "es2018",
      "dom"
    ]
  }
}
```

### `package.json`

```json
{
  "name": "surveyjs-angular",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build --prod",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "14.1.1",
    "@angular/cdk": "14.1.1",
    "@angular/common": "14.1.1",
    "@angular/compiler": "14.1.1",
    "@angular/core": "14.1.1",
    "@angular/forms": "14.1.1",
    "@angular/platform-browser": "14.1.1",
    "@angular/platform-browser-dynamic": "14.1.1",
    "@angular/router": "14.1.1",
    "core-js": "3.6.4",
    "rxjs": "6.5.4",
    "survey-core": "latest",
    "survey-angular-ui": "latest",
    "tslib": "1.13.0",
    "zone.js": "0.11.7"
  },
  "devDependencies": {
    "@angular/cli": "1.6.6",
    "@angular/compiler-cli": "^5.2.0",
    "@angular/language-service": "^5.2.0",
    "@types/core-js": "0.9.46",
    "@types/jasmine": "~2.8.3",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "~6.0.60",
    "codelyzer": "^4.0.1",
    "jasmine-core": "~2.8.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~2.0.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "^1.2.1",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.1.2",
    "ts-node": "~4.1.0",
    "tslint": "~5.9.1",
    "typescript": "3.9.7"
  },
  "keywords": [ "angular", "surveyjs" ],
  "description": "SurveyJS-Angular example project"
}
```

## Other Frameworks

- [React](https://surveyjs.io/form-library/examples/set-properties-on-multiple-questions-using-panel/reactjs.md)
- [Vue 3](https://surveyjs.io/form-library/examples/set-properties-on-multiple-questions-using-panel/vue3js.md)
- [jQuery](https://surveyjs.io/form-library/examples/set-properties-on-multiple-questions-using-panel/jquery.md)
- [Vanilla JS](https://surveyjs.io/form-library/examples/set-properties-on-multiple-questions-using-panel/vanillajs.md)