极客教程jQWidgets jqxGrid columngroups 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，并且被广泛支持的框架。jqxGrid用来说明一个jQuery widget，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。
columngroups属性用于在显示的jqxGrid中启用多列标题。它是数组类型，其默认值是[]。
阵列中可使用的值如下。
- parentgroup。它用于设置列头的父组名称。
- name: 它用于设置列头的名称。
- align: 它用于设置列头的对齐方式。可能的值可以是 “左”、”中间 “或 “右”。
语法:
- 设置columngroups属性。
$('Selector').jqxGrid({ columngroup: [] });
- 返回columngroups属性。
var columngroups = $('Selector').jqxGrid('columngroups');
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/jqx-all.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>
例子1：下面的例子说明了在jQWidgets中设置jqxGrid的columngroups属性。
<!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>
<script type="text/javascript"
src="jqwidgets/jqxgrid.columnsresize.js">
</script>
</head>
<body>
<center>
<h1 style="color: green">
GeeksforGeeks
</h1>
<h3>
jQWidgets jqxGrid columngroups
property
</h3><br />
<div id="jqxg"></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,
theme: 'energyblue',
height: "260px",
width: "240px",
columns: [
{
text: "Subject Name",
datafield: "subjectnames",
columngroup: "Syllabus",
width: "120px",
},
{
text: "Page No.",
datafield: "pagenumber",
columngroup: "Syllabus",
width: "120px",
},
],
columngroups: [{
text: 'Syllabus',
name: 'Syllabus',
align: 'left'
}]
});
});
</script>
</body>
</html>
输出:
例子2：下面的例子说明了jqxGrid columngroups属性在jQWidgets中通过设置其值为null。
<!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>
<script type="text/javascript"
src="jqwidgets/jqxgrid.columnsresize.js">
</script>
</head>
<body>
<center>
<h1 style="color: green">
GeeksforGeeks
</h1>
<h3>
jQWidgets jqxGrid columngroups
property
</h3><br />
<div id="jqxg"></div>
<div>
<input type="button"
id="jqxBtn"
style="margin-top: 25px"
value="Click here" />
</div>
<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,
theme: 'energyblue',
sortable: true,
columngroups: null,
height: "230px",
width: "240px",
columns: [
{
text: "Subject Name",
columngroup: "Syllabus",
datafield: "subjectnames",
width: "120px",
},
{
text: "Page No.",
columngroup: "Syllabus",
datafield: "pagenumber",
width: "120px",
},
],
});
("#jqxBtn").jqxButton({
width: "180px",
height: "30px",
});
("#jqxBtn").on("click", function () {
var cg =('#jqxg').jqxGrid('columngroups');
if (cg === null) {
('#log').text(cg);
}
else {
('#log').text("Not null!");
}
});
});
</script>
</body>
</html>
输出:
