jQWidgets is a JavaScript framework for making web-based applications for PC and mobile devices. It is a very powerful, optimized, platform-independent, and widely supported framework. The jqxTreeGrid is used for representing data in a tree-like structure. This widget is useful for displaying multi-column of hierarchical data, data paging, sorting and filtering, data editing, column resizing, fixed columns, conditional formatting, aggregates, and rows selection. These widgets also read and display the data from any type of data sources such as XML, JSON, Array, CSV, or TSV.
The addFilter() method is used to add a new filter to the jqxTreeGrid.
Syntax:
$("#treeGrid").jqxTreeGrid('addFilter', dataField, filtergroup);Parameters: This method accepts two parameters that are illustrated below:
- dataField: This is the specified column name on which filter is going to be added.
- filtergroup: This is the created filter that is going to be added.
Return Values: This method does not return any values.
Linked Files: Download jQWidgets from the given link. In the HTML file, locate the script files in the downloaded folder.
<link rel=”stylesheet” href=”jqwidgets/styles/jqx.base.css” type=”text/css” />
<script type=”text/javascript” src=”scripts/jquery.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxcore.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxdata.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxbuttons.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxscrollbar.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxlistbox.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxdropdownlist.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxdatatable.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxtreegrid.js”></script>
Example: The below example illustrates the jQWidgets jqxTreeGrid addFilter() method. In the below example, the filter has been added for the ‘geeksforgeeks’ from ‘Company’ column.
<!DOCTYPE html> <html lang="en">
<head>
<link rel="stylesheet" href=
"jqwidgets/styles/jqx.base.css" type="text/css"/>
<script type="text/javascript" src="scripts/jquery.js">
</script>
<script type="text/javascript" src="jqwidgets/jqxcore.js">
</script>
<script type="text/javascript" src="jqwidgets/jqxdata.js">
</script>
<script type="text/javascript" src="jqwidgets/jqxbuttons.js">
</script>
<script type="text/javascript" src="jqwidgets/jqxscrollbar.js">
</script>
<script type="text/javascript" src="jqwidgets/jqxlistbox.js">
</script>
<script type="text/javascript" src="jqwidgets/jqxdropdownlist.js">
</script>
<script type="text/javascript" src="jqwidgets/jqxdatatable.js">
</script>
<script type="text/javascript" src="jqwidgets/jqxtreegrid.js">
</script>
</head>
<body>
<center>
<h1 style="color: green;">
GeeksforGeeks
</h1>
<h3>
jQWidgets jqxTreeGrid addFilter() Method
</h3>
<div id="jqxTreeGrid" style="margin: 25px;">
</div>
<input type="button" style="margin: 20px;" id="button_for_addFilter" value="Add a new filter" />
<div id="log"></div>
<script type="text/javascript">
$(document).ready(function () {
var A = [{
"ID": 1,
"Employee_Name": "Amit",
"Company": "GeeksforGeeks",
"Designation": "Content Writer",
"expanded": true,
A1: [{
"ID": 2,
"Employee_Name": "Sumit",
"Company": "Amazon",
"Designation": "Software Engineer",
}, {
"ID": 3,
"Employee_Name": "Vivek",
"Company": "Apple",
"Designation": "Product Manager",
"expanded": true,
A1: [{
"ID": 4,
"Employee_Name": "Soni",
"Company": "Flipkart",
"Designation": "HR",
}]
}]
}];
var Data_Source = {
dataFields: [{
name: 'ID'
}, {
name: 'Employee_Name'
}, {
name: 'Company'
}, {
name: 'Designation'
}, {
name: 'A1',
type: 'array'
}, {
name: 'expanded'
}],
hierarchy: {
root: 'A1'
},
id: 'ID',
localData: A
};
var Data = new
$.jqx.dataAdapter(Data_Source);
$("#jqxTreeGrid").jqxTreeGrid({
source: Data,
filterable: true,
ready: function () {
$("#jqxTreeGrid").jqxTreeGrid(
'expandRow', '1');
$("#jqxTreeGrid").jqxTreeGrid(
'expandRow', '3');
},
columns: [{
text: 'Employee_Name',
align: 'center',
dataField: 'Employee_Name',
width: 140
}, {
text: 'Company',
align: 'center',
dataField: 'Company',
width: 150
}, {
text: 'Designation',
align: 'center',
dataField: 'Designation',
width: 150
}]
});
$("#button_for_addFilter").jqxButton({
width: 300,
height: 35
});
$('#button_for_addFilter').click(
function () {
var Type = 'stringfilter';
var Group = new $.jqx.filter();
var Operator = 1;
var Value = "GeeksforGeeks";
var Condition = 'equal';
var filter = Group.createfilter(
Type, Value, Condition);
Group.addfilter(Operator, filter);
$("#jqxTreeGrid").jqxTreeGrid(
'addFilter', 'Company', Group);
$("#jqxTreeGrid").jqxTreeGrid(
'applyFilters');
});
});
</script>
</center>
</body>
</html>
|
Output: