jQuery UI Widgets Forums Navigation Menu, Context Menu How to trace the parent id and parent label based on the sub menu item

This topic contains 4 replies, has 2 voices, and was last updated by  Dimitar 11 years, 5 months ago.

Viewing 5 posts - 1 through 5 (of 5 total)
  • Author

  • SushmaSriram
    Member

    Hi Team,

    I have a 2-level horizontal menu.

    When clicked on a sub menu item, how can I get the parent id and also the label of the parent menu item.

    Also, one of my sub menu list is very long, hence is there a possibility to have a single column with scroll bar on it?

    thanks,
    Sushma


    Dimitar
    Participant

    Hello Sushma,

    Here is a way of accessing the id and label of the top-level elements of a menu when a sub menu item is clicked. Note that you need to set ids to every ul and its parent li in the HTML. If the ul id is named “name-ul”, for example, the li id must be named “name”.

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <title></title>
    <link rel="Stylesheet" href="../../jqwidgets2.4.2/jqwidgets/styles/jqx.base.css" />
    <script type="text/javascript" src="../../scripts/jquery-1.8.2.min.js"></script>
    <script type="text/javascript" src="../../jqwidgets2.4.2/jqwidgets/jqxcore.js"></script>
    <script type="text/javascript" src="../../jqwidgets2.4.2/jqwidgets/jqxmenu.js"></script>
    </head>
    <body>
    <div id='content'>
    <script type="text/javascript">
    $(document).ready(function () {
    // Create a jqxMenu
    $("#jqxMenu").jqxMenu({ width: 600, height: 30 });
    $("#jqxMenu").bind('itemclick', function () {
    var children = $("#jqxMenu ul:first").children();
    // In case a top-level menu item is clicked
    if ($(args).is(children)) {
    }
    // In case another menu item is clicked
    else {
    var popup = $(args).parents(".jqx-menu-popup:last");
    var ul = $(popup.children()[0]).find('ul:first');
    var textul = "#" + ul[0].id;
    var n = textul.indexOf("-ul");
    var text = textul.slice(0, (n));
    id = $(text)[0].id; // the id variable stores the id
    label = $(text)[0].innerHTML; // the label variable stores the label
    };
    });
    });
    </script>
    <div id='jqxWidget'>
    <div id='jqxMenu'>
    <ul>
    <li><a href="#">Home</a></li>
    <li id="about">About Us
    <ul id="about-ul">
    <li><a href="#">History</a></li>
    <li><a href="#">Our Vision</a></li>
    </ul>
    </li>
    <li>Services </li>
    <li id="products">Products
    <ul id="products-ul">
    <li id="new"><a href="#">New</a>
    <ul id="new-ul">
    <li><a href="#">Corporate Use</a></li>
    <li><a href="#">Private Use</a></li>
    </ul>
    </li>
    <li id="used"><a href="#">Used</a>
    <ul id="used-ul">
    <li><a href="#">Corporate Use</a></li>
    <li><a href="#">Private Use</a></li>
    </ul>
    </li>
    <li><a href="#">Featured</a></li>
    </ul>
    </li>
    <li><a href="#">Gallery</a></li>
    <li><a href="#">Events</a></li>
    <li><a href="#">Careers</a></li>
    <li><a href="#">Contact Us</a></li>
    </ul>
    </div>
    </div>
    </div>
    </body>
    </html>

    As for your second question, it is not possible to add a scrollbar to a sub menu. However, please take a look at the following demo: Columns.

    Best Regards,
    Dimitar

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


    SushmaSriram
    Member

    Hi,

    Could you please let me know how to retrieve parent id and label based on below example:

    In this demo the jqxMenu is built from JSON data.

    $(document).ready(function () {
    var theme = getTheme();
    var data = [
    {
    “text”: “Chocolate Beverage”,
    “id”: “1”,
    “parentid”: “-1”,
    “subMenuWidth”: ‘250px’
    }, {
    “id”: “2”,
    “parentid”: “1”,
    “text”: “Hot Chocolate”
    }, {
    “id”: “3”,
    “parentid”: “1”,
    “text”: “Peppermint Hot Chocolate”
    }, {
    “id”: “4”,
    “parentid”: “1”,
    “text”: “Salted Caramel Hot Chocolate”
    }, {
    “id”: “5”,
    “parentid”: “1”,
    “text”: “White Hot Chocolate”
    }, {
    “id”: “6”,
    “text”: “Espresso Beverage”,
    “parentid”: “-1”,
    “subMenuWidth”: ‘200px’
    }, {
    “id”: “7”,
    “parentid”: “6”,
    “text”: “Caffe Americano”
    }, {
    “id”: “8”,
    “text”: “Caffe Latte”,
    “parentid”: “6”
    }, {
    “id”: “9”,
    “text”: “Caffe Mocha”,
    “parentid”: “6”
    }, {
    “id”: “10”,
    “text”: “Cappuccino”,
    “parentid”: “6”
    }, {
    “id”: “11”,
    “text”: “Pumpkin Spice Latte”,
    “parentid”: “6”
    }, {
    “id”: “12”,
    “text”: “Frappuccino”,
    “parentid”: “-1”,
    “subMenuWidth”: ‘250px’
    }, {
    “id”: “13”,
    “text”: “Caffe Vanilla Frappuccino”,
    “parentid”: “12”
    }, {
    “id”: “15”,
    “text”: “450 calories”,
    “parentid”: “13”
    }, {
    “id”: “16”,
    “text”: “16g fat”,
    “parentid”: “13”
    }, {
    “id”: “17”,
    “text”: “13g protein”,
    “parentid”: “13”
    }, {
    “id”: “14”,
    “text”: “Caffe Vanilla Frappuccino Light”,
    “parentid”: “12”
    }]
    // prepare the data
    var source =
    {
    datatype: “json”,
    datafields: [
    { name: ‘id’ },
    { name: ‘parentid’ },
    { name: ‘text’ },
    { name: ‘subMenuWidth’ }
    ],
    id: ‘id’,
    localdata: data
    };
    // create data adapter.
    var dataAdapter = new $.jqx.dataAdapter(source);
    // perform Data Binding.
    dataAdapter.dataBind();
    // get the menu items. The first parameter is the item’s id. The second parameter is the parent item’s id. The ‘items’ parameter represents
    // the sub items collection name. Each jqxTree item has a ‘label’ property, but in the JSON data, we have a ‘text’ field. The last parameter
    // specifies the mapping between the ‘text’ and ‘label’ fields.
    var records = dataAdapter.getRecordsHierarchy(‘id’, ‘parentid’, ‘items’, [{ name: ‘text’, map: ‘label’}]);
    $(‘#jqxWidget’).jqxMenu({ source: records, height: 30, theme: theme, width: ‘400px’ });
    $(“#jqxWidget”).bind(‘itemclick’, function (event) {
    $(“#eventLog”).html(“Id: ” + event.args.id + “, Text: ” + $(event.args).text());
    });
    });


    SushmaSriram
    Member

    Hi,

    Sorry for the previous post.

    Could you please let me know how to retrieve parent id and label based on below example:

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <title id='Description'>In this demo the jqxMenu is built from JSON data.</title>
    <link rel="stylesheet" href="../../jqwidgets/styles/jqx.base.css" type="text/css" />
    <script type="text/javascript" src="../../scripts/gettheme.js"></script>
    <script type="text/javascript" src="../../scripts/jquery-1.8.2.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>
    </head>
    <body>
    <div id='content'>
    <script type="text/javascript">
    $(document).ready(function () {
    var theme = getTheme();
    var data = [
    {
    "text": "Chocolate Beverage",
    "id": "1",
    "parentid": "-1",
    "subMenuWidth": '250px'
    }, {
    "id": "2",
    "parentid": "1",
    "text": "Hot Chocolate"
    }, {
    "id": "3",
    "parentid": "1",
    "text": "Peppermint Hot Chocolate"
    }, {
    "id": "4",
    "parentid": "1",
    "text": "Salted Caramel Hot Chocolate"
    }, {
    "id": "5",
    "parentid": "1",
    "text": "White Hot Chocolate"
    }, {
    "id": "6",
    "text": "Espresso Beverage",
    "parentid": "-1",
    "subMenuWidth": '200px'
    }, {
    "id": "7",
    "parentid": "6",
    "text": "Caffe Americano"
    }, {
    "id": "8",
    "text": "Caffe Latte",
    "parentid": "6"
    }, {
    "id": "9",
    "text": "Caffe Mocha",
    "parentid": "6"
    }, {
    "id": "10",
    "text": "Cappuccino",
    "parentid": "6"
    }, {
    "id": "11",
    "text": "Pumpkin Spice Latte",
    "parentid": "6"
    }, {
    "id": "12",
    "text": "Frappuccino",
    "parentid": "-1",
    "subMenuWidth": '250px'
    }, {
    "id": "13",
    "text": "Caffe Vanilla Frappuccino",
    "parentid": "12"
    }, {
    "id": "15",
    "text": "450 calories",
    "parentid": "13"
    }, {
    "id": "16",
    "text": "16g fat",
    "parentid": "13"
    }, {
    "id": "17",
    "text": "13g protein",
    "parentid": "13"
    }, {
    "id": "14",
    "text": "Caffe Vanilla Frappuccino Light",
    "parentid": "12"
    }]
    // prepare the data
    var source =
    {
    datatype: "json",
    datafields: [
    { name: 'id' },
    { name: 'parentid' },
    { name: 'text' },
    { name: 'subMenuWidth' }
    ],
    id: 'id',
    localdata: data
    };
    // create data adapter.
    var dataAdapter = new $.jqx.dataAdapter(source);
    // perform Data Binding.
    dataAdapter.dataBind();
    // get the menu items. The first parameter is the item's id. The second parameter is the parent item's id. The 'items' parameter represents
    // the sub items collection name. Each jqxTree item has a 'label' property, but in the JSON data, we have a 'text' field. The last parameter
    // specifies the mapping between the 'text' and 'label' fields.
    var records = dataAdapter.getRecordsHierarchy('id', 'parentid', 'items', [{ name: 'text', map: 'label'}]);
    $('#jqxWidget').jqxMenu({ source: records, height: 30, theme: theme, width: '400px' });
    $("#jqxWidget").bind('itemclick', function (event) {
    $("#eventLog").html("Id: " + event.args.id + ", Text: " + $(event.args).text());
    });
    });
    </script>
    <div id='jqxWidget'>
    </div>
    <div style="margin-top: 50px; font-size: 13px; font-family: Verdana;" id="eventLog"></div>
    </div>
    </body>
    </html>

    Dimitar
    Participant

    Hi Sushma,

    Here is the example, with parent id and label logged when a menu item is clicked:

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <title id='Description'>In this demo the jqxMenu is built from JSON data.</title>
    <link rel="stylesheet" href="../../jqwidgets/styles/jqx.base.css" type="text/css" />
    <script type="text/javascript" src="../../scripts/gettheme.js"></script>
    <script type="text/javascript" src="../../scripts/jquery-1.8.2.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>
    </head>
    <body>
    <div id='content'>
    <script type="text/javascript">
    $(document).ready(function () {
    var theme = getTheme();
    var data = [
    {
    "text": "Chocolate Beverage",
    "id": "1",
    "parentid": "-1",
    "subMenuWidth": '250px'
    }, {
    "id": "2",
    "parentid": "1",
    "text": "Hot Chocolate"
    }, {
    "id": "3",
    "parentid": "1",
    "text": "Peppermint Hot Chocolate"
    }, {
    "id": "4",
    "parentid": "1",
    "text": "Salted Caramel Hot Chocolate"
    }, {
    "id": "5",
    "parentid": "1",
    "text": "White Hot Chocolate"
    }, {
    "id": "6",
    "text": "Espresso Beverage",
    "parentid": "-1",
    "subMenuWidth": '200px'
    }, {
    "id": "7",
    "parentid": "6",
    "text": "Caffe Americano"
    }, {
    "id": "8",
    "text": "Caffe Latte",
    "parentid": "6"
    }, {
    "id": "9",
    "text": "Caffe Mocha",
    "parentid": "6"
    }, {
    "id": "10",
    "text": "Cappuccino",
    "parentid": "6"
    }, {
    "id": "11",
    "text": "Pumpkin Spice Latte",
    "parentid": "6"
    }, {
    "id": "12",
    "text": "Frappuccino",
    "parentid": "-1",
    "subMenuWidth": '250px'
    }, {
    "id": "13",
    "text": "Caffe Vanilla Frappuccino",
    "parentid": "12"
    }, {
    "id": "15",
    "text": "450 calories",
    "parentid": "13"
    }, {
    "id": "16",
    "text": "16g fat",
    "parentid": "13"
    }, {
    "id": "17",
    "text": "13g protein",
    "parentid": "13"
    }, {
    "id": "14",
    "text": "Caffe Vanilla Frappuccino Light",
    "parentid": "12"
    }]
    // prepare the data
    var source =
    {
    datatype: "json",
    datafields: [
    { name: 'id' },
    { name: 'parentid' },
    { name: 'text' },
    { name: 'subMenuWidth' }
    ],
    id: 'id',
    localdata: data
    };
    // create data adapter.
    var dataAdapter = new $.jqx.dataAdapter(source);
    // perform Data Binding.
    dataAdapter.dataBind();
    // get the menu items. The first parameter is the item's id. The second parameter is the parent item's id. The 'items' parameter represents
    // the sub items collection name. Each jqxTree item has a 'label' property, but in the JSON data, we have a 'text' field. The last parameter
    // specifies the mapping between the 'text' and 'label' fields.
    var records = dataAdapter.getRecordsHierarchy('id', 'parentid', 'items', [{ name: 'text', map: 'label'}]);
    $('#jqxWidget').jqxMenu({ source: records, height: 30, theme: theme, width: '400px' });
    $("#jqxWidget").bind('itemclick', function (event) {
    var id = event.args.id;
    var itemCount = event.args.owner.items.length;
    for (var i = 0; i < itemCount; i++) {
    if (event.args.owner.items[i].id == id) {
    parentId = event.args.owner.items[i].parentId;
    break;
    };
    };
    var parentLabel;
    for (var i = 0; i < itemCount; i++) {
    if (event.args.owner.items[i].id == parentId) {
    parentLabel = event.args.owner.items[i].element.innerHTML;
    break;
    };
    };
    $("#eventLog").html("Id: " + id + ", Text: " + $(event.args).text() + ", Parent Id: " + parentId + ", Parent label: " + parentLabel);
    });
    });
    </script>
    <div id='jqxWidget'>
    </div>
    <div style="margin-top: 50px; font-size: 13px; font-family: Verdana;" id="eventLog">
    </div>
    </div>
    </body>
    </html>

    Best Regards,
    Dimitar

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

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