jQWidgets jqxDataTable rowExpand Event

Last Updated : 29 Mar, 2023

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 rowExpand event is activated whenever a row of the displayed jqxDataTable is expanded.

Syntax:

$('Selector').on("rowExpand", function (event) {
    // Code
});

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 1: The below example illustrates the jqxDataTable rowExpand event in jQWidgets.

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-1.11.1.min.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 rowExpand Event 
        </h3> 
  
        <div id="jqxdt"></div> 
        <br> 
        <div id="log"></div> 
    </center> 
  
    <script type="text/javascript"> 
        $(document).ready(function () { 
            var d = new Array(); 
            var subjectNames = 
                ["C++", "Scala", "Java",  
                "C", "R", "JavaScript"]; 
  
            var pageNumber = 
                ["7", "8", "12", "11", "10", "19"]; 
  
            for (var j = 0; j < 6; j++) { 
                var r = {}; 
                r["subjectnames"] = 
                    subjectNames[(Math.floor( 
                        Math.random() * subjectNames.length)) 
                    ]; 
  
                r["pagenumber"] = 
                    pageNumber[(Math.floor( 
                        Math.random() * pageNumber.length)) 
                    ]; 
                d[j] = r; 
  
            } 
            var src = { 
                localdata: d, 
                datatype: "array", 
            }; 
            var ird = function (i, drow, e, rowinfo) { 
                var td = null; 
                var info = null; 
                var note = null; 
                rowinfo.detailsHeight = 100; 
                e.append($( 
                    "<div style='margin: 9px;'>" + 
                    "<ul style='margin-left: 29px;'>" + 
                    "<li class='title'>T</li><li>Marks</li></ul>" 
                    + "<div class='information'></div>" + 
                    "<div class='note'></div></div>")); 
                td = $(e.children()[0]); 
                if (td != null) { 
                    info = td.find('.information'); 
                    note = td.find('.pagenumber'); 
                    var t = td.find('.title'); 
                    t.text(drow.subjectnames); 
                    var c = $('<div style="margin: 6px;"></div>'); 
                    c.appendTo($(info)); 
                    var lc = $( 
                '<div style="float: left; width: 41%;"></div>'); 
                    var rc = $( 
                '<div style="float: left; width: 42%;"></div>'); 
                    c.append(lc); 
                    c.append(rc); 
                    var subjectnames =  
                    "<div style='margin: 10px;'><b>Subject:</b> " 
                        + drow.subjectnames + "</div>"; 
                    $(lc).append(subjectnames); 
                    var nc = $( 
            '<div style="white-space: normal; margin: 6px;"><span>' 
                        + drow.pagenumber + '</span></div>'); 
                    $(note).append(nc); 
  
                    $(td).jqxTabs({ 
                        theme: 'energyblue', 
                        width: 500, 
                        height: 160 
                    }); 
                } 
            } 
            var data_Adapter = new $.jqx.dataAdapter(src); 
            $("#jqxdt").jqxDataTable({ 
                source: data_Adapter, 
                height: 170, 
                rowDetails: true, 
                initRowDetails: ird, 
                columns: [ 
                    { 
                        text: "Subject Name", 
                        datafield: "subjectnames", 
                        width: "120px", 
                    }, 
                    { 
                        text: "Page No.", 
                        datafield: "pagenumber", 
                        width: "120px", 
                    }, 
                ], 
            }); 
            $("#jqxdt").on("rowExpand", function (event) { 
                $('#log').text("Row expanded!"); 
            }); 
        }); 
    </script> 
</body> 
  
</html>

Output:

Example 2: The following is another example of the jqxDataTable rowExpand event in jQWidgets.

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 
            rowExpand Event 
        </h3> 
  
        <div id="jqxdt"></div> 
        <br> 
        <div id="log"></div> 
    </center> 
  
    <script type="text/javascript"> 
        $(document).ready(function () { 
            var d = new Array(); 
            var subjectNames = 
                ["C++", "Scala", "Java",  
                "C", "R", "JavaScript"]; 
  
            var pageNumber = 
                ["7", "8", "12", "11", "10", "19"]; 
  
            for (var j = 0; j < 6; j++) { 
                var r = {}; 
                r["subjectnames"] = 
                    subjectNames[(Math.floor( 
                    Math.random() * subjectNames.length))]; 
  
                r["pagenumber"] = 
                    pageNumber[(Math.floor( 
                    Math.random() * pageNumber.length))]; 
                d[j] = r; 
  
            } 
            var src = { 
                localdata: d, 
                datatype: "array", 
            }; 
            var ird = function (i, drow, e, rowinfo) { 
                var td = null; 
                var info = null; 
                var note = null; 
                rowinfo.detailsHeight = 100; 
                e.append($( 
                    "<div style='margin: 9px;'>" + 
                    "<ul style='margin-left: 29px;'>" + 
                    "<li class='title'>T</li><li>Marks</li>" + 
                    "</ul><div class='information'></div>" + 
                    "<div class='note'></div></div>")); 
                td = $(e.children()[0]); 
                if (td != null) { 
                    info = td.find('.information'); 
                    note = td.find('.pagenumber'); 
                    var t = td.find('.title'); 
                    t.text(drow.subjectnames); 
                    var c = $('<div style="margin: 6px;"></div>'); 
                    c.appendTo($(info)); 
                    var lc = $( 
                '<div style="float: left; width: 41%;"></div>'); 
                    var rc = $( 
                '<div style="float: left; width: 42%;"></div>'); 
                    c.append(lc); 
                    c.append(rc); 
                    var subjectnames =  
                    "<div style='margin: 10px;'><b>Subject:</b> " 
                        + drow.subjectnames + "</div>"; 
                    $(lc).append(subjectnames); 
                    var nc = $( 
            '<div style="white-space: normal; margin: 6px;"><span>' 
                        + drow.pagenumber + '</span></div>'); 
                    $(note).append(nc); 
  
                    $(td).jqxTabs({ 
                        theme: 'energyblue', 
                        width: 500, 
                        height: 160 
                    }); 
                } 
            } 
            var data_Adapter = new $.jqx.dataAdapter(src); 
            $("#jqxdt").jqxDataTable({ 
                source: data_Adapter, 
                height: 170, 
                rowDetails: true, 
                initRowDetails: ird, 
                columns: [ 
                    { 
                        text: "Subject Name", 
                        datafield: "subjectnames", 
                        width: "120px", 
                    }, 
                    { 
                        text: "Page No.", 
                        datafield: "pagenumber", 
                        width: "120px", 
                    }, 
                ], 
            }); 
            $("#jqxdt").on("rowExpand", function (event) { 
                var args = event.args; 
                var i = args.index 
                if (i === null) { 
                    $('#log').text("Null!"); 
                } 
                else { 
                    $('#log').text("Event triggered!"); 
                } 
            }); 
        }); 
    </script> 
</body> 
  
</html>