极客教程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:
