React Tree List - Adaptability

The TreeList automatically adapts its layout to screens with different sizes. In this demo, you can switch between horizontal and vertical screen orientations. If columns do not fit the selected orientation, the TreeList hides them one by one, starting with the rightmost column. Information from the hidden columns is still available in adaptive detail rows.

To enable this feature, set the columnHidingEnabled property to true.

Was this demo helpful?

Thank you!

Feel free to share demo-related thoughts here.
If you have technical questions, please create a support ticket in the DevExpress Support Center.

Thank you for the feedback!

TS JS

Backend API

​x
 
import React from 'react';
import { TreeList, Column, ColumnChooser } from 'devextreme-react/tree-list';import { employees } from './data.ts';​const expandedRowKeys = [1];​const App = () => (  <TreeList    id="employees"    dataSource={employees}    showBorders={true}    columnHidingEnabled={true}    showRowLines={true}    defaultExpandedRowKeys={expandedRowKeys}    keyExpr="ID"    parentIdExpr="Head_ID"  >    <Column dataField="Title" caption="Position" />    <Column dataField="Full_Name" />    <Column dataField="City" />    <Column hidingPriority={0} dataField="State" />    <Column hidingPriority={1} dataField="Mobile_Phone" />    <Column hidingPriority={2} dataField="Hire_Date" dataType="date" />    <ColumnChooser enabled={true} mode="select" />  </TreeList>);​export default App;​

xxxxxxxxxx
 
import React from 'react';
import { TreeList, Column, ColumnChooser } from 'devextreme-react/tree-list';import { employees } from './data.js';​const expandedRowKeys = [1];const App = () => (  <TreeList    id="employees"    dataSource={employees}    showBorders={true}    columnHidingEnabled={true}    showRowLines={true}    defaultExpandedRowKeys={expandedRowKeys}    keyExpr="ID"    parentIdExpr="Head_ID"  >    <Column      dataField="Title"      caption="Position"    />    <Column dataField="Full_Name" />    <Column dataField="City" />    <Column      hidingPriority={0}      dataField="State"    />    <Column      hidingPriority={1}      dataField="Mobile_Phone"    />    <Column      hidingPriority={2}      dataField="Hire_Date"      dataType="date"    />    <ColumnChooser      enabled={true}      mode="select"    />  </TreeList>);export default App;​

xxxxxxxxxx
 
import React from 'react';
import ReactDOM from 'react-dom';​import App from './App.tsx';​ReactDOM.render(  <App />,  document.getElementById('app'),);​

xxxxxxxxxx
 
export const employees = [{
  ID: 1,  Head_ID: 0,  Full_Name: 'John Heart',  Prefix: 'Mr.',  Title: 'CEO',  City: 'Los Angeles',  State: 'California',  Email: 'jheart@dx-email.com',  Skype: 'jheart_DX_skype',  Mobile_Phone: '(213) 555-9392',  Birth_Date: '1964-03-16',  Hire_Date: '1995-01-15',}, {  ID: 2,  Head_ID: 1,  Full_Name: 'Samantha Bright',  Prefix: 'Dr.',  Title: 'COO',  City: 'Los Angeles',  State: 'California',  Email: 'samanthab@dx-email.com',  Skype: 'samanthab_DX_skype',  Mobile_Phone: '(213) 555-2858',  Birth_Date: '1966-05-02',  Hire_Date: '2004-05-24',}, {  ID: 3,  Head_ID: 1,  Full_Name: 'Arthur Miller',  Prefix: 'Mr.',  Title: 'CTO',  City: 'Denver',  State: 'Colorado',  Email: 'arthurm@dx-email.com',  Skype: 'arthurm_DX_skype',  Mobile_Phone: '(310) 555-8583',  Birth_Date: '1972-07-11',  Hire_Date: '2007-12-18',}, {  ID: 4,  Head_ID: 1,  Full_Name: 'Robert Reagan',  Prefix: 'Mr.',  Title: 'CMO',  City: 'Bentonville',  State: 'Arkansas',  Email: 'robertr@dx-email.com',  Skype: 'robertr_DX_skype',  Mobile_Phone: '(818) 555-2387',  Birth_Date: '1974-09-07',  Hire_Date: '2002-11-08',}, {  ID: 5,  Head_ID: 1,  Full_Name: 'Greta Sims',  Prefix: 'Ms.',  Title: 'HR Manager',  City: 'Atlanta',  State: 'Georgia',  Email: 'gretas@dx-email.com',  Skype: 'gretas_DX_skype',  Mobile_Phone: '(818) 555-6546',  Birth_Date: '1977-11-22',  Hire_Date: '1998-04-23',}, {  ID: 6,  Head_ID: 3,  Full_Name: 'Brett Wade',  Prefix: 'Mr.',  Title: 'IT Manager',  City: 'Reno',  State: 'Nevada',  Email: 'brettw@dx-email.com',  Skype: 'brettw_DX_skype',  Mobile_Phone: '(626) 555-0358',  Birth_Date: '1968-12-01',  Hire_Date: '2009-03-06',}, {  ID: 7,  Head_ID: 5,  Full_Name: 'Sandra Johnson',  Prefix: 'Mrs.',  Title: 'Controller',  City: 'Beaver',  State: 'Utah',  Email: 'sandraj@dx-email.com',  Skype: 'sandraj_DX_skype',  Mobile_Phone: '(562) 555-2082',  Birth_Date: '1974-11-15',  Hire_Date: '2005-05-11',}, {  ID: 8,  Head_ID: 4,  Full_Name: 'Ed Holmes',  Prefix: 'Dr.',  Title: 'Sales Manager',  City: 'Malibu',  State: 'California',  Email: 'edwardh@dx-email.com',  Skype: 'edwardh_DX_skype',  Mobile_Phone: '(310) 555-1288',  Birth_Date: '1973-07-14',  Hire_Date: '2005-06-19',}, {  ID: 9,  Head_ID: 3,  Full_Name: 'Barb Banks',  Prefix: 'Mrs.',  Title: 'Support Manager',  City: 'Phoenix',  State: 'Arizona',  Email: 'barbarab@dx-email.com',  Skype: 'barbarab_DX_skype',  Mobile_Phone: '(310) 555-3355',  Birth_Date: '1979-04-14',  Hire_Date: '2002-08-07',}, {  ID: 10,  Head_ID: 2,  Full_Name: 'Kevin Carter',  Prefix: 'Mr.',  Title: 'Shipping Manager',  City: 'San Diego',  State: 'California',  Email: 'kevinc@dx-email.com',  Skype: 'kevinc_DX_skype',  Mobile_Phone: '(213) 555-2840',  Birth_Date: '1978-01-09',  Hire_Date: '2009-08-11',}, {  ID: 11,  Head_ID: 5,  Full_Name: 'Cindy Stanwick',  Prefix: 'Ms.',  Title: 'HR Assistant',  City: 'Little Rock',  State: 'Arkansas',  Email: 'cindys@dx-email.com',  Skype: 'cindys_DX_skype',  Mobile_Phone: '(818) 555-6655',  Birth_Date: '1985-06-05',  Hire_Date: '2008-03-24',}, {  ID: 12,  Head_ID: 8,  Full_Name: 'Sammy Hill',  Prefix: 'Mr.',  Title: 'Sales Assistant',  City: 'Pasadena',  State: 'California',  Email: 'sammyh@dx-email.com',  Skype: 'sammyh_DX_skype',  Mobile_Phone: '(626) 555-7292',  Birth_Date: '1984-02-17',  Hire_Date: '2012-02-01',}, {  ID: 13,  Head_ID: 10,  Full_Name: 'Davey Jones',  Prefix: 'Mr.',  Title: 'Shipping Assistant',  City: 'Pasadena',  State: 'California',  Email: 'davidj@dx-email.com',  Skype: 'davidj_DX_skype',  Mobile_Phone: '(626) 555-0281',  Birth_Date: '1983-03-06',  Hire_Date: '2011-04-24',}, {  ID: 14,  Head_ID: 10,  Full_Name: 'Victor Norris',  Prefix: 'Mr.',  Title: 'Shipping Assistant',  City: 'Little Rock',  State: 'Arkansas',  Email: 'victorn@dx-email.com',  Skype: 'victorn_DX_skype',  Mobile_Phone: '(213) 555-9278',  Birth_Date: '1986-07-23',  Hire_Date: '2012-07-23',}, {  ID: 15,  Head_ID: 10,  Full_Name: 'Mary Stern',  Prefix: 'Ms.',  Title: 'Shipping Assistant',  City: 'Beaver',  State: 'Utah',  Email: 'marys@dx-email.com',  Skype: 'marys_DX_skype',  Mobile_Phone: '(818) 555-7857',  Birth_Date: '1982-04-08',  Hire_Date: '2012-08-12',}, {  ID: 16,  Head_ID: 10,  Full_Name: 'Robin Cosworth',  Prefix: 'Mrs.',  Title: 'Shipping Assistant',  City: 'Los Angeles',  State: 'California',  Email: 'robinc@dx-email.com',  Skype: 'robinc_DX_skype',  Mobile_Phone: '(818) 555-0942',  Birth_Date: '1981-06-12',  Hire_Date: '2012-09-01',}, {  ID: 17,  Head_ID: 9,  Full_Name: 'Kelly Rodriguez',  Prefix: 'Ms.',  Title: 'Support Assistant',  City: 'Boise',  State: 'Idaho',  Email: 'kellyr@dx-email.com',  Skype: 'kellyr_DX_skype',  Mobile_Phone: '(818) 555-9248',  Birth_Date: '1988-05-11',  Hire_Date: '2012-10-13',}, {  ID: 18,  Head_ID: 9,  Full_Name: 'James Anderson',  Prefix: 'Mr.',  Title: 'Support Assistant',  City: 'Atlanta',  State: 'Georgia',  Email: 'jamesa@dx-email.com',  Skype: 'jamesa_DX_skype',  Mobile_Phone: '(323) 555-4702',  Birth_Date: '1987-01-29',  Hire_Date: '2012-10-18',}, {  ID: 19,  Head_ID: 9,  Full_Name: 'Antony Remmen',  Prefix: 'Mr.',  Title: 'Support Assistant',  City: 'Boise',  State: 'Idaho',  Email: 'anthonyr@dx-email.com',  Skype: 'anthonyr_DX_skype',  Mobile_Phone: '(310) 555-6625',  Birth_Date: '1986-02-19',  Hire_Date: '2013-01-19',}, {  ID: 20,  Head_ID: 8,  Full_Name: 'Olivia Peyton',  Prefix: 'Mrs.',  Title: 'Sales Assistant',  City: 'Atlanta',  State: 'Georgia',  Email: 'oliviap@dx-email.com',  Skype: 'oliviap_DX_skype',  Mobile_Phone: '(310) 555-2728',  Birth_Date: '1981-06-03',  Hire_Date: '2012-05-14',}, {  ID: 21,  Head_ID: 6,  Full_Name: 'Taylor Riley',  Prefix: 'Mr.',  Title: 'Network Admin',  City: 'San Jose',  State: 'California',  Email: 'taylorr@dx-email.com',  Skype: 'taylorr_DX_skype',  Mobile_Phone: '(310) 555-7276',  Birth_Date: '1982-08-14',  Hire_Date: '2012-04-14',}, {  ID: 22,  Head_ID: 6,  Full_Name: 'Amelia Harper',  Prefix: 'Mrs.',  Title: 'Network Admin',  City: 'Los Angeles',  State: 'California',  Email: 'ameliah@dx-email.com',  Skype: 'ameliah_DX_skype',  Mobile_Phone: '(213) 555-4276',  Birth_Date: '1983-11-19',  Hire_Date: '2011-02-10',}, {  ID: 23,  Head_ID: 6,  Full_Name: 'Wally Hobbs',  Prefix: 'Mr.',  Title: 'Programmer',  City: 'Chatsworth',  State: 'California',  Email: 'wallyh@dx-email.com',  Skype: 'wallyh_DX_skype',  Mobile_Phone: '(818) 555-8872',  Birth_Date: '1984-12-24',  Hire_Date: '2011-02-17',}, {  ID: 24,  Head_ID: 6,  Full_Name: 'Brad Jameson',  Prefix: 'Mr.',  Title: 'Programmer',  City: 'San Fernando',  State: 'California',  Email: 'bradleyj@dx-email.com',  Skype: 'bradleyj_DX_skype',  Mobile_Phone: '(818) 555-4646',  Birth_Date: '1988-10-12',  Hire_Date: '2011-03-02',}, {  ID: 25,  Head_ID: 6,  Full_Name: 'Karen Goodson',  Prefix: 'Miss',  Title: 'Programmer',  City: 'South Pasadena',  State: 'California',  Email: 'kareng@dx-email.com',  Skype: 'kareng_DX_skype',  Mobile_Phone: '(626) 555-0908',  Birth_Date: '1987-04-26',  Hire_Date: '2011-03-14',}, {  ID: 26,  Head_ID: 5,  Full_Name: 'Marcus Orbison',  Prefix: 'Mr.',  Title: 'Travel Coordinator',  City: 'Los Angeles',  State: 'California',  Email: 'marcuso@dx-email.com',  Skype: 'marcuso_DX_skype',  Mobile_Phone: '(213) 555-7098',  Birth_Date: '1982-03-02',  Hire_Date: '2005-05-19',}, {  ID: 27,  Head_ID: 5,  Full_Name: 'Sandy Bright',  Prefix: 'Ms.',  Title: 'Benefits Coordinator',  City: 'Denver',  State: 'Colorado',  Email: 'sandrab@dx-email.com',  Skype: 'sandrab_DX_skype',  Mobile_Phone: '(818) 555-0524',  Birth_Date: '1983-09-11',  Hire_Date: '2005-06-04',}, {  ID: 28,  Head_ID: 6,  Full_Name: 'Morgan Kennedy',  Prefix: 'Mrs.',  Title: 'Graphic Designer',  City: 'San Fernando Valley',  State: 'California',  Email: 'morgank@dx-email.com',  Skype: 'morgank_DX_skype',  Mobile_Phone: '(818) 555-8238',  Birth_Date: '1984-07-17',  Hire_Date: '2012-01-11',}, {  ID: 29,  Head_ID: 28,  Full_Name: 'Violet Bailey',  Prefix: 'Ms.',  Title: 'Jr Graphic Designer',  City: 'La Canada',  State: 'California',  Email: 'violetb@dx-email.com',  Skype: 'violetb_DX_skype',  Mobile_Phone: '(818) 555-2478',  Birth_Date: '1985-06-10',  Hire_Date: '2012-01-19',}, {  ID: 30,  Head_ID: 5,  Full_Name: 'Ken Samuelson',  Prefix: 'Dr.',  Title: 'Ombudsman',  City: 'St. Louis',  State: 'Missouri',  Email: 'kents@dx-email.com',  Skype: 'kents_DX_skype',  Mobile_Phone: '(562) 555-9282',  Birth_Date: '1972-09-11',  Hire_Date: '2009-04-22',}];​​

xxxxxxxxxx
 
window.exports = window.exports || {};
window.config = {  transpiler: 'ts',  typescriptOptions: {    module: 'system',    emitDecoratorMetadata: true,    experimentalDecorators: true,    jsx: 'react',  },  meta: {    'react': {      'esModule': true,    },    'typescript': {      'exports': 'ts',    },    'devextreme/time_zone_utils.js': {      'esModule': true,    },    'devextreme/localization.js': {      'esModule': true,    },    'devextreme/viz/palette.js': {      'esModule': true,    },    'openai': {      'esModule': true,    },  },  paths: {    'npm:': 'https://unpkg.com/',    'bundles:': 'bundles/',    'externals:': 'bundles/externals/',  },  defaultExtension: 'js',  map: {    'ts': 'npm:plugin-typescript@8.0.0/lib/plugin.js',    'typescript': 'npm:typescript@4.2.4/lib/typescript.js',    'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js',    'react': 'npm:react@17.0.2/umd/react.development.js',    'react-dom': 'npm:react-dom@17.0.2/umd/react-dom.development.js',    'prop-types': 'npm:prop-types/prop-types.js',    'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js',    'luxon': 'npm:luxon@3.4.4/build/global/luxon.min.js',    'es6-object-assign': 'npm:es6-object-assign',    'devextreme': 'npm:devextreme@24.2.6/cjs',    'devextreme-react': 'npm:devextreme-react@24.2.6/cjs',    'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js',    'devexpress-diagram': 'npm:devexpress-diagram@2.2.15/dist/dx-diagram.js',    'devexpress-gantt': 'npm:devexpress-gantt@4.1.60/dist/dx-gantt.js',    '@devextreme/runtime': 'npm:@devextreme/runtime@3.0.12',    'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js',    'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js',    'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js',    'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js',    'inferno-hydrate': 'npm:inferno-hydrate/dist/inferno-hydrate.min.js',    'inferno-clone-vnode': 'npm:inferno-clone-vnode/dist/inferno-clone-vnode.min.js',    'inferno-create-class': 'npm:inferno-create-class/dist/inferno-create-class.min.js',    'inferno-extras': 'npm:inferno-extras/dist/inferno-extras.min.js',    'devextreme-cldr-data': 'npm:devextreme-cldr-data@1.0.3',    // SystemJS plugins    'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js',    'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js',    // Prettier    'prettier/standalone': 'npm:prettier@2.8.8/standalone.js',    'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js',  },  packages: {    'devextreme': {      defaultExtension: 'js',    },    'devextreme-react': {      main: 'index.js',    },    'devextreme/events/utils': {      main: 'index',    },    'devextreme/common/core/events/utils': {      main: 'index',    },    'devextreme/localization/messages': {      format: 'json',      defaultExtension: 'json',    },    'devextreme/events': {      main: 'index',    },    'es6-object-assign': {      main: './index.js',      defaultExtension: 'js',    },  },  packageConfigPaths: [    'npm:@devextreme/*/package.json',    'npm:@devextreme/runtime@3.0.12/inferno/package.json',  ],  babelOptions: {    sourceMaps: false,    stage0: true,    react: true,  },};System.config(window.config);​

xxxxxxxxxx
 
import React from 'react';
import ReactDOM from 'react-dom';import App from './App.js';​ReactDOM.render(<App />, document.getElementById('app'));​

xxxxxxxxxx
 
export const employees = [
  {    ID: 1,    Head_ID: 0,    Full_Name: 'John Heart',    Prefix: 'Mr.',    Title: 'CEO',    City: 'Los Angeles',    State: 'California',    Email: 'jheart@dx-email.com',    Skype: 'jheart_DX_skype',    Mobile_Phone: '(213) 555-9392',    Birth_Date: '1964-03-16',    Hire_Date: '1995-01-15',  },  {    ID: 2,    Head_ID: 1,    Full_Name: 'Samantha Bright',    Prefix: 'Dr.',    Title: 'COO',    City: 'Los Angeles',    State: 'California',    Email: 'samanthab@dx-email.com',    Skype: 'samanthab_DX_skype',    Mobile_Phone: '(213) 555-2858',    Birth_Date: '1966-05-02',    Hire_Date: '2004-05-24',  },  {    ID: 3,    Head_ID: 1,    Full_Name: 'Arthur Miller',    Prefix: 'Mr.',    Title: 'CTO',    City: 'Denver',    State: 'Colorado',    Email: 'arthurm@dx-email.com',    Skype: 'arthurm_DX_skype',    Mobile_Phone: '(310) 555-8583',    Birth_Date: '1972-07-11',    Hire_Date: '2007-12-18',  },  {    ID: 4,    Head_ID: 1,    Full_Name: 'Robert Reagan',    Prefix: 'Mr.',    Title: 'CMO',    City: 'Bentonville',    State: 'Arkansas',    Email: 'robertr@dx-email.com',    Skype: 'robertr_DX_skype',    Mobile_Phone: '(818) 555-2387',    Birth_Date: '1974-09-07',    Hire_Date: '2002-11-08',  },  {    ID: 5,    Head_ID: 1,    Full_Name: 'Greta Sims',    Prefix: 'Ms.',    Title: 'HR Manager',    City: 'Atlanta',    State: 'Georgia',    Email: 'gretas@dx-email.com',    Skype: 'gretas_DX_skype',    Mobile_Phone: '(818) 555-6546',    Birth_Date: '1977-11-22',    Hire_Date: '1998-04-23',  },  {    ID: 6,    Head_ID: 3,    Full_Name: 'Brett Wade',    Prefix: 'Mr.',    Title: 'IT Manager',    City: 'Reno',    State: 'Nevada',    Email: 'brettw@dx-email.com',    Skype: 'brettw_DX_skype',    Mobile_Phone: '(626) 555-0358',    Birth_Date: '1968-12-01',    Hire_Date: '2009-03-06',  },  {    ID: 7,    Head_ID: 5,    Full_Name: 'Sandra Johnson',    Prefix: 'Mrs.',    Title: 'Controller',    City: 'Beaver',    State: 'Utah',    Email: 'sandraj@dx-email.com',    Skype: 'sandraj_DX_skype',    Mobile_Phone: '(562) 555-2082',    Birth_Date: '1974-11-15',    Hire_Date: '2005-05-11',  },  {    ID: 8,    Head_ID: 4,    Full_Name: 'Ed Holmes',    Prefix: 'Dr.',    Title: 'Sales Manager',    City: 'Malibu',    State: 'California',    Email: 'edwardh@dx-email.com',    Skype: 'edwardh_DX_skype',    Mobile_Phone: '(310) 555-1288',    Birth_Date: '1973-07-14',    Hire_Date: '2005-06-19',  },  {    ID: 9,    Head_ID: 3,    Full_Name: 'Barb Banks',    Prefix: 'Mrs.',    Title: 'Support Manager',    City: 'Phoenix',    State: 'Arizona',    Email: 'barbarab@dx-email.com',    Skype: 'barbarab_DX_skype',    Mobile_Phone: '(310) 555-3355',    Birth_Date: '1979-04-14',    Hire_Date: '2002-08-07',  },  {    ID: 10,    Head_ID: 2,    Full_Name: 'Kevin Carter',    Prefix: 'Mr.',    Title: 'Shipping Manager',    City: 'San Diego',    State: 'California',    Email: 'kevinc@dx-email.com',    Skype: 'kevinc_DX_skype',    Mobile_Phone: '(213) 555-2840',    Birth_Date: '1978-01-09',    Hire_Date: '2009-08-11',  },  {    ID: 11,    Head_ID: 5,    Full_Name: 'Cindy Stanwick',    Prefix: 'Ms.',    Title: 'HR Assistant',    City: 'Little Rock',    State: 'Arkansas',    Email: 'cindys@dx-email.com',    Skype: 'cindys_DX_skype',    Mobile_Phone: '(818) 555-6655',    Birth_Date: '1985-06-05',    Hire_Date: '2008-03-24',  },  {    ID: 12,    Head_ID: 8,    Full_Name: 'Sammy Hill',    Prefix: 'Mr.',    Title: 'Sales Assistant',    City: 'Pasadena',    State: 'California',    Email: 'sammyh@dx-email.com',    Skype: 'sammyh_DX_skype',    Mobile_Phone: '(626) 555-7292',    Birth_Date: '1984-02-17',    Hire_Date: '2012-02-01',  },  {    ID: 13,    Head_ID: 10,    Full_Name: 'Davey Jones',    Prefix: 'Mr.',    Title: 'Shipping Assistant',    City: 'Pasadena',    State: 'California',    Email: 'davidj@dx-email.com',    Skype: 'davidj_DX_skype',    Mobile_Phone: '(626) 555-0281',    Birth_Date: '1983-03-06',    Hire_Date: '2011-04-24',  },  {    ID: 14,    Head_ID: 10,    Full_Name: 'Victor Norris',    Prefix: 'Mr.',    Title: 'Shipping Assistant',    City: 'Little Rock',    State: 'Arkansas',    Email: 'victorn@dx-email.com',    Skype: 'victorn_DX_skype',    Mobile_Phone: '(213) 555-9278',    Birth_Date: '1986-07-23',    Hire_Date: '2012-07-23',  },  {    ID: 15,    Head_ID: 10,    Full_Name: 'Mary Stern',    Prefix: 'Ms.',    Title: 'Shipping Assistant',    City: 'Beaver',    State: 'Utah',    Email: 'marys@dx-email.com',    Skype: 'marys_DX_skype',    Mobile_Phone: '(818) 555-7857',    Birth_Date: '1982-04-08',    Hire_Date: '2012-08-12',  },  {    ID: 16,    Head_ID: 10,    Full_Name: 'Robin Cosworth',    Prefix: 'Mrs.',    Title: 'Shipping Assistant',    City: 'Los Angeles',    State: 'California',    Email: 'robinc@dx-email.com',    Skype: 'robinc_DX_skype',    Mobile_Phone: '(818) 555-0942',    Birth_Date: '1981-06-12',    Hire_Date: '2012-09-01',  },  {    ID: 17,    Head_ID: 9,    Full_Name: 'Kelly Rodriguez',    Prefix: 'Ms.',    Title: 'Support Assistant',    City: 'Boise',    State: 'Idaho',    Email: 'kellyr@dx-email.com',    Skype: 'kellyr_DX_skype',    Mobile_Phone: '(818) 555-9248',    Birth_Date: '1988-05-11',    Hire_Date: '2012-10-13',  },  {    ID: 18,    Head_ID: 9,    Full_Name: 'James Anderson',    Prefix: 'Mr.',    Title: 'Support Assistant',    City: 'Atlanta',    State: 'Georgia',    Email: 'jamesa@dx-email.com',    Skype: 'jamesa_DX_skype',    Mobile_Phone: '(323) 555-4702',    Birth_Date: '1987-01-29',    Hire_Date: '2012-10-18',  },  {    ID: 19,    Head_ID: 9,    Full_Name: 'Antony Remmen',    Prefix: 'Mr.',    Title: 'Support Assistant',    City: 'Boise',    State: 'Idaho',    Email: 'anthonyr@dx-email.com',    Skype: 'anthonyr_DX_skype',    Mobile_Phone: '(310) 555-6625',    Birth_Date: '1986-02-19',    Hire_Date: '2013-01-19',  },  {    ID: 20,    Head_ID: 8,    Full_Name: 'Olivia Peyton',    Prefix: 'Mrs.',    Title: 'Sales Assistant',    City: 'Atlanta',    State: 'Georgia',    Email: 'oliviap@dx-email.com',    Skype: 'oliviap_DX_skype',    Mobile_Phone: '(310) 555-2728',    Birth_Date: '1981-06-03',    Hire_Date: '2012-05-14',  },  {    ID: 21,    Head_ID: 6,    Full_Name: 'Taylor Riley',    Prefix: 'Mr.',    Title: 'Network Admin',    City: 'San Jose',    State: 'California',    Email: 'taylorr@dx-email.com',    Skype: 'taylorr_DX_skype',    Mobile_Phone: '(310) 555-7276',    Birth_Date: '1982-08-14',    Hire_Date: '2012-04-14',  },  {    ID: 22,    Head_ID: 6,    Full_Name: 'Amelia Harper',    Prefix: 'Mrs.',    Title: 'Network Admin',    City: 'Los Angeles',    State: 'California',    Email: 'ameliah@dx-email.com',    Skype: 'ameliah_DX_skype',    Mobile_Phone: '(213) 555-4276',    Birth_Date: '1983-11-19',    Hire_Date: '2011-02-10',  },  {    ID: 23,    Head_ID: 6,    Full_Name: 'Wally Hobbs',    Prefix: 'Mr.',    Title: 'Programmer',    City: 'Chatsworth',    State: 'California',    Email: 'wallyh@dx-email.com',    Skype: 'wallyh_DX_skype',    Mobile_Phone: '(818) 555-8872',    Birth_Date: '1984-12-24',    Hire_Date: '2011-02-17',  },  {    ID: 24,    Head_ID: 6,    Full_Name: 'Brad Jameson',    Prefix: 'Mr.',    Title: 'Programmer',    City: 'San Fernando',    State: 'California',    Email: 'bradleyj@dx-email.com',    Skype: 'bradleyj_DX_skype',    Mobile_Phone: '(818) 555-4646',    Birth_Date: '1988-10-12',    Hire_Date: '2011-03-02',  },  {    ID: 25,    Head_ID: 6,    Full_Name: 'Karen Goodson',    Prefix: 'Miss',    Title: 'Programmer',    City: 'South Pasadena',    State: 'California',    Email: 'kareng@dx-email.com',    Skype: 'kareng_DX_skype',    Mobile_Phone: '(626) 555-0908',    Birth_Date: '1987-04-26',    Hire_Date: '2011-03-14',  },  {    ID: 26,    Head_ID: 5,    Full_Name: 'Marcus Orbison',    Prefix: 'Mr.',    Title: 'Travel Coordinator',    City: 'Los Angeles',    State: 'California',    Email: 'marcuso@dx-email.com',    Skype: 'marcuso_DX_skype',    Mobile_Phone: '(213) 555-7098',    Birth_Date: '1982-03-02',    Hire_Date: '2005-05-19',  },  {    ID: 27,    Head_ID: 5,    Full_Name: 'Sandy Bright',    Prefix: 'Ms.',    Title: 'Benefits Coordinator',    City: 'Denver',    State: 'Colorado',    Email: 'sandrab@dx-email.com',    Skype: 'sandrab_DX_skype',    Mobile_Phone: '(818) 555-0524',    Birth_Date: '1983-09-11',    Hire_Date: '2005-06-04',  },  {    ID: 28,    Head_ID: 6,    Full_Name: 'Morgan Kennedy',    Prefix: 'Mrs.',    Title: 'Graphic Designer',    City: 'San Fernando Valley',    State: 'California',    Email: 'morgank@dx-email.com',    Skype: 'morgank_DX_skype',    Mobile_Phone: '(818) 555-8238',    Birth_Date: '1984-07-17',    Hire_Date: '2012-01-11',  },  {    ID: 29,    Head_ID: 28,    Full_Name: 'Violet Bailey',    Prefix: 'Ms.',    Title: 'Jr Graphic Designer',    City: 'La Canada',    State: 'California',    Email: 'violetb@dx-email.com',    Skype: 'violetb_DX_skype',    Mobile_Phone: '(818) 555-2478',    Birth_Date: '1985-06-10',    Hire_Date: '2012-01-19',  },  {    ID: 30,    Head_ID: 5,    Full_Name: 'Ken Samuelson',    Prefix: 'Dr.',    Title: 'Ombudsman',    City: 'St. Louis',    State: 'Missouri',    Email: 'kents@dx-email.com',    Skype: 'kents_DX_skype',    Mobile_Phone: '(562) 555-9282',    Birth_Date: '1972-09-11',    Hire_Date: '2009-04-22',  },];​

xxxxxxxxxx
 
<!DOCTYPE html>
<html lang="en">  <head>↔</head>​  <body class="dx-viewport">    <div class="demo-container">      <div id="app"></div>    </div>  </body></html>​

xxxxxxxxxx
 
#employees {
  padding: 10px;  max-height: 440px;}​

The TreeList hides columns based on their hiding priorities. Columns with lower priority values are hidden first. You can use the columns[].hidingPriority property to specify custom hiding priorities for those columns that you want to hide. Other columns will never be hidden.