极客教程jQWidgets jqxGrid applyfilters()方法
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。
applyfilters()方法用于将所述过滤器应用于显示的jqxGrid。它没有参数，也不返回任何东西。
语法:
$('#Selector').jqxGrid('applyfilters');
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jQWidgets中jqxGrid applyfilters()方法。
<!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 applyfilters()
method
</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',
filterable: true,
height: "260px",
width: "240px",
columns: [
{
text: "Subject Name",
datafield: "subjectnames",
width: "120px",
},
{
text: "Page No.",
datafield: "pagenumber",
width: "120px",
},
],
});
("#jqxBtn").jqxButton({
width: "180px",
height: "30px",
});
var fg = new .jqx.filter();
("#jqxBtn").on("click", function () {
("#jqxg").jqxGrid('addfilter', 'pagenumber', fg);
("#jqxg").jqxGrid('applyfilters');
$("#log").text("Method invoked!");
});
});
</script>
</body>
</html>
输出:
例子2：下面是另一个例子，说明了jQWidgets中jqxGrid applyfilters()方法。
<!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 applyfilters()
method
</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',
filterable: true,
height: "260px",
width: "240px",
columns: [
{
text: "Subject Name",
datafield: "subjectnames",
width: "120px",
},
{
text: "Page No.",
datafield: "pagenumber",
width: "120px",
},
],
});
("#jqxBtn").jqxButton({
width: "180px",
height: "30px",
});
var add_filter = function () {
var fg = new .jqx.filter();
var val = 'C+';
var conditn = 'contains';
var opratr = 2;
var fltr =
fg.createfilter('stringfilter', val, conditn);
fg.addfilter(opratr, fltr);
("#jqxg").jqxGrid('addfilter', 'subjectnames', fg);
}
add_filter();
("#jqxBtn").on("click", function () {
("#jqxg").jqxGrid('applyfilters');
$("#log").text("Filters Applied!")
});
});
</script>
</body>
</html>
输出:
