jQWidgets jqxDataTable ensureRowVisible() Method

Last Updated : 26 Sep, 2021

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 jqxDataTable is used for reading and displaying the data from the HTML Table. This is also used to display data from various data sources like XML, JSON, Array, CSV, or TSV.

The ensureRowVisible() method is used to scroll the vertical scrollbar to a specified row index.

Syntax:

$("#dataTable").jqxDataTable('ensureRowVisible', rowIndex);

Parameters: This method accepts a parameter that is illustrated below:

rowIndex: This is the specified row index up to which the scrolling will be done.

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>

Example: The below example illustrates the jQWidgets ensureRowVisible() method.

HTML

<!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> 
</head> 
  
<body> 
    <center> 
        <h1 style="color: green;"> 
            GeeksforGeeks 
        </h1> 
        <h3> 
            jQWidgets jqxDataTable ensureRowVisible() Method 
        </h3> 
        <div id="Data_Table"></div> 
        <input type="button" style="margin: 31px;" 
               id="jqxbutton_for_ensureRowVisible"
               value="Invoke the ensureRowVisible() Method" /> 
        <div id="log"></div> 
    </center> 
    <script> 
        $(document).ready(function () { 
            var Data = new Array(); 
            var Employee_Name = [ 
                "Ravi", "Sumit", "Amit", 
                "Vivek", "Sumit"]; 
            var Company = [ 
                "GeeksforGeeks", "Amazon", 
                "Google", "Apple", 
                "Capgemini"]; 
            var Designation = [ 
                "Content Writer", "Software Engineer", 
                "Data Analyst", "HR", "Founder"]; 
  
            a = 0; 
            while (a < 5) { 
                var row = {}; 
                row["Employee_Name"] = Employee_Name[a]; 
                row["Company"] = Company[a]; 
                row["Designation"] = Designation[a] 
                Data[a] = row; 
                a++; 
            } 
  
            var Data_Source = { 
                localData: Data, 
                dataType: "array", 
                dataFields: [{ 
                    name: 'Employee_Name', 
                    type: 'string' 
                }, { 
                    name: 'Company', 
                    type: 'string' 
                }, { 
                    name: 'Designation', 
                    type: 'string' 
                }] 
            }; 
            var data_Adapter = 
                new $.jqx.dataAdapter(Data_Source); 
            $("#Data_Table").jqxDataTable({ 
                width: 560, 
                height: 150, 
                theme: 'energyblue', 
                source: data_Adapter, 
                columns: [{ 
                    text: 'Employee_Name', 
                    dataField: 'Employee_Name', 
                    width: 210 
                }, { 
                    text: 'Company', 
                    dataField: 'Company', 
                    width: 150 
                }, { 
                    text: 'Designation', 
                    dataField: 'Designation', 
                    width: 200 
                }] 
            }); 
            $("#jqxbutton_for_ensureRowVisible"). 
                jqxButton({ 
                    theme: 'energyblue', 
                    width: 300 
                }); 
            $('#jqxbutton_for_ensureRowVisible'). 
                click(function () { 
                    $("#Data_Table"). 
                        jqxDataTable('ensureRowVisible', 
                                     4); 
                }); 
        }); 
    </script> 
</body> 
  
</html>