jQWidgets jqxGrid columnmenuopening属性

jQWidgets jqxGrid columnmenuopening属性

jQWidgets是一个JavaScript框架,用于为PC和移动设备制作基于Web的应用程序。它是一个非常强大的、优化的、与平台无关的、并被广泛支持的框架。jqxGrid被用来说明一个jQuery widget,它以表格形式显示数据。此外,它完全支持与数据的连接,以及分页、分组、排序、过滤和编辑。

columnmenuopening属性是一个回调函数,每当该列的一个菜单被打开时就会被调用。它可以被用来改变菜单的大小或取消菜单的打开。此外,这里可以传递三个参数,即菜单、数据域以及菜单的高度。如果该函数返回false,那么打开将被停止。它的类型是Function,它的默认值是null。

语法:

设置columnmenuopening属性。

$('#Selector').jqxGrid({ 
    columnmenuopening: function (menu, datafield, height) {} 
});

返回columnmenuopening属性。

var columnmenuopening = 
    $('#Selector').jqxGrid('columnmenuopening');

链接的文件:从给出的链接中下载jQWidgets。在HTML文件中,找到下载文件夹中的脚本文件。

<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/jqxmenu.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxgrid.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxgrid.selection.js”></script>

下面的例子说明了jQWidgets中jqxGrid columnmenuopening属性。

示例:

<!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/jqxmenu.js"></script>
    <script type="text/javascript" 
        src="jqwidgets/jqxgrid.js"></script>
    <script type="text/javascript" 
        src="jqwidgets/jqxgrid.selection.js"></script>
</head>
  
<body>
    <center>
        <h1 style="color: green">
            GeeksforGeeks
        </h1>
  
        <h3>jQWidgets jqxGrid columnmenuopening
            property
        </h3>
        <br />
  
        <div id="jqxg"></div>
        <br />
        <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<50; 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 data_Adapter = new.jqx.dataAdapter(src);
            ("#jqxg").jqxGrid({
                source: data_Adapter,
                filterable: true,
                theme: 'energyblue',
                height: "260px",
                width: "240px",
                columnmenuopening: function () {
                   ('#log').text('Columns menu is opening!');
                },
                columns: [
                    {
                        text: "Subject Name",
                        datafield: "subjectnames",
                        width: "120px",
                    },
                    {
                        text: "Page No.",
                        datafield: "pagenumber",
                        width: "120px",
                    },
                ],
            });
        });
    </script>
</body>
  
</html>

输出:

jQWidgets jqxGrid columnmenuopening属性

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