Filtering in EJ2 JavaScript Query builder control

27 Apr 20239 minutes to read
Query Builder allows you to create or delete conditions and groups. You can use showButtons to enable/disable these buttons.
You can create or delete conditions by interacting through the user interface and methods.
Use the addRules, and deleteRules methods to create/delete conditions.
Use addGroups, and deleteGroups methods to create/delete groups.
index.js
index.html
/**
     * Default querybuilder sample
     */
        var columnData = [
		    { field: 'EmployeeID', label: 'Employee ID', type: 'number' },
            { field: 'FirstName', label: 'First Name', type: 'string' },
            { field: 'TitleOfCourtesy', label: 'Title Of Courtesy', type: 'boolean', values: ['Mr.', 'Mrs.']},
            { field: 'Title', label: 'Title', type: 'string' },
            { field: 'HireDate', label: 'Hire Date', type: 'date', format: 'dd/MM/yyyy' },
            { field: 'Country', label: 'Country', type: 'string' },
            { field: 'City', label: 'City', type: 'string' }
        ];
        var importRules = {
            'condition': 'and',
            'rules': [{
                    'label': 'Employee ID',
                    'field': 'EmployeeID',
                    'type': 'number',
                    'operator': 'equal',
                    'value': 1001
                },
                {
                    'label': 'Title',
                    'field': 'Title',
                    'type': 'string',
                    'operator': 'equal',
                    'value': 'Sales Manager'
                }
            ]
        };
        var employeeData = [{
      'EmployeeID': 1,
      'FirstName': 'Nancy',
      'Title': 'Sales Representative',
      'TitleOfCourtesy': 'Ms.',
      'HireDate': '22/07/2001',
      'City': 'Seattle',
      'Country': 'USA'
    },
    {
      'EmployeeID': 2,
      'FirstName': 'Andrew',
      'Title': 'Vice President',
      'TitleOfCourtesy': 'Dr.',
      'HireDate': '21/04/2003',
      'City': 'Tacoma',
      'Country': 'USA'
    },
    {
      'EmployeeID': 3,
      'FirstName': 'Janet',
      'Title': 'Sales Representative',
      'TitleOfCourtesy': 'Ms.',
      'HireDate': '22/07/2001',
      'City': 'Kirkland',
      'Country': 'USA'
    }];
        var qryBldrObj = new ej.querybuilder.QueryBuilder({
            width: '70%',
            dataSource: employeeData,
            columns: columnData,
            rule: importRules,
        });
        qryBldrObj.appendTo('#querybuilder');
    
      document.getElementById('qbaddrule').onclick = function() {
        qryBldrObj.addRules([{'label': 'EmployeeID','field': 'EmployeeID','type': 'number','operator': 'equal','value': 7787 }], 'group0');
    }
     document.getElementById('qbaddgroup').onclick = function() {
       qryBldrObj.addGroups([{'condition': 'and','rules': [{'label': 'First Name','field': 'FirstName','type': 'string','operator': 'startswith','value': 'v' }]}], 'group0');
    }
     document.getElementById('qbdeletegroup').onclick = function() {
       qryBldrObj.deleteGroups(['group1']);
    }
<!DOCTYPE html><html lang="en"><head>
    <title>EJ2 Query Builder</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="https://cdn.syncfusion.com/ej2/29.2.4/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.2.4/ej2-buttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.2.4/ej2-splitbuttons/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.2.4/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.2.4/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.2.4/ej2-calendars/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.2.4/ej2-popups/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/29.2.4/ej2-querybuilder/styles/material.css" rel="stylesheet">
    <link href="styles.css" rel="stylesheet">
    
    
    
<script src="https://cdn.syncfusion.com/ej2/29.2.4/dist/ej2.min.js" type="text/javascript"></script>
<script src="es5-datasource.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    
    <div id="container">
        <div id="querybuilder"></div>
         <div class="e-qb-button"> 
             <button id="qbaddrule" class="e-btn e-primary"> Add Rule </button>
             <button id="qbaddgroup" class="e-btn e-primary"> Add Group </button>
             <button id="qbdeletegroup" class="e-btn e-primary">Delete Group </button>
         </div>
    </div>

<script>
var ele = document.getElementById('container');
if(ele) {
  ele.style.visibility = "visible";
}   
      </script>
<script src="index.js" type="text/javascript"></script>
</body></html>