JavaScript/jQuery Tree List - Adaptability

The JavaScript 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 JavaScript 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.

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Backend API

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$(() => {
  $('#employees').dxTreeList({    dataSource: employees,    keyExpr: 'ID',    parentIdExpr: 'Head_ID',    showBorders: true,    columns: [{      dataField: 'Title',      caption: 'Position',    }, 'Full_Name', 'City', {      dataField: 'State',      hidingPriority: 0,    }, {      dataField: 'Mobile_Phone',      hidingPriority: 1,    }, {      dataField: 'Hire_Date',      dataType: 'date',      hidingPriority: 2,    }],    columnHidingEnabled: true,    columnChooser: {      enabled: true,      mode: 'select',    },    showRowLines: true,    expandedRowKeys: [1],  });});​

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<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">  <head>↔</head>  <body class="dx-viewport">    <div class="demo-container">      <div id="employees"></div>    </div>  </body></html>​

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

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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',}];​

The JavaScript 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.