jQuery UI Widgets Forums Grid Obtaining of scroll offset

This topic contains 1 reply, has 2 voices, and was last updated by  Dimitar 10 years, 7 months ago.

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  • Obtaining of scroll offset #32615

    Yuri Antipin
    Participant

    Hi! According to the documentation the jqxGrid control has only ‘scrolloffset’ function which allow to set scroll offset.
    How can I get the scroll offset of jqxGrid?

    Obtaining of scroll offset #32650

    Dimitar
    Participant

    Hello Yuri Antipin,

    Here is how to get the scroll offset of a grid:

    <!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-1.10.2.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/jqxmenu.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/jqxgrid.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxgrid.selection.js"></script>
    <script type="text/javascript" src="../../scripts/gettheme.js"></script>
    <script type="text/javascript">
    $(document).ready(function () {
    var theme = "";
    // prepare the data
    var data = new Array();
    var firstNames =
    [
    "Andrew", "Nancy", "Shelley", "Regina", "Yoshi", "Antoni", "Mayumi", "Ian", "Peter", "Lars", "Petra", "Martin", "Sven", "Elio", "Beate", "Cheryl", "Michael", "Guylene"
    ];
    var lastNames =
    [
    "Fuller", "Davolio", "Burke", "Murphy", "Nagase", "Saavedra", "Ohno", "Devling", "Wilson", "Peterson", "Winkler", "Bein", "Petersen", "Rossi", "Vileid", "Saylor", "Bjorn", "Nodier"
    ];
    var productNames =
    [
    "Black Tea", "Green Tea", "Caffe Espresso", "Doubleshot Espresso", "Caffe Latte", "White Chocolate Mocha", "Cramel Latte", "Caffe Americano", "Cappuccino", "Espresso Truffle", "Espresso con Panna", "Peppermint Mocha Twist"
    ];
    var priceValues =
    [
    "2.25", "1.5", "3.0", "3.3", "4.5", "3.6", "3.8", "2.5", "5.0", "1.75", "3.25", "4.0"
    ];
    // generate sample data.
    var generatedata = function (startindex, endindex) {
    var data = {};
    for (var i = startindex; i < endindex; i++) {
    var row = {};
    var productindex = Math.floor(Math.random() * productNames.length);
    var price = parseFloat(priceValues[productindex]);
    var quantity = 1 + Math.round(Math.random() * 10);
    row["id"] = i;
    row["firstname"] = firstNames[Math.floor(Math.random() * firstNames.length)];
    row["lastname"] = lastNames[Math.floor(Math.random() * lastNames.length)];
    row["productname"] = productNames[productindex];
    row["price"] = price;
    row["quantity"] = quantity;
    row["total"] = price * quantity;
    data[i] = row;
    }
    return data;
    }
    var source =
    {
    datatype: "array",
    localdata: {},
    totalrecords: 1000000
    };
    // load virtual data.
    var rendergridrows = function (params) {
    var data = generatedata(params.startindex, params.endindex);
    return data;
    }
    var dataAdapter = new $.jqx.dataAdapter(source);
    $("#jqxgrid").jqxGrid(
    {
    width: 670,
    source: dataAdapter,
    theme: theme,
    virtualmode: true,
    rendergridrows: rendergridrows,
    columns: [
    { text: 'Id', datafield: 'id', width: 100 },
    { text: 'First Name', datafield: 'firstname', width: 100 },
    { text: 'Last Name', datafield: 'lastname', width: 100 },
    { text: 'Product', datafield: 'productname', width: 180 },
    { text: 'Quantity', datafield: 'quantity', width: 80, cellsalign: 'right' },
    { text: 'Unit Price', datafield: 'price', width: 90, cellsalign: 'right', cellsformat: 'c2' },
    { text: 'Total', datafield: 'total', width: 100, cellsalign: 'right', cellsformat: 'c2' }
    ]
    });
    $("#getVerticalScrollOffset").click(function () {
    var verticalScrollOffset = $("#jqxScrollAreaUpverticalScrollBarjqxgrid").height()
    alert(verticalScrollOffset);
    });
    });
    </script>
    </head>
    <body class='default'>
    <button id="getVerticalScrollOffset">
    Get vertical scroll offset</button>
    <div id='jqxWidget' style="font-size: 13px; font-family: Verdana; float: left;">
    <div id="jqxgrid">
    </div>
    </div>
    </body>
    </html>

    Note that the id of the element above the scroll thumb is “jqxScrollAreaUpverticalScrollBar” + the id of your grid, in this case “jqxgrid”.

    Best Regards,
    Dimitar

    jQWidgets team
    http://www.jqwidgets.com/

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