极客教程jQWidgets jqxListBox focus()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、并被广泛支持的框架。jqxListBox被用来说明一个jQuery ListBox widget，它包括一个可选元素的列表。
focus()方法是用来固定jqxListBox的焦点。它没有参数，也不返回任何东西。
语法:
$("#jqxListBox").jqxListBox('focus');
链接的文件：从链接中下载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/jqx-all.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxcore.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/jqxlistbox.js”></script>
例子：下面的例子说明了jqxListBox focus()方法在jQWidgets中。
<html>
<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/jqx-all.js">
</script>
<script type="text/javascript"
src="jqwidgets/jqxcore.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/jqxlistbox.js">
</script>
</head>
<body>
<center>
<h1 style="color: green;">
GeeksforGeeks
</h1>
<h3>
jQWidgets jqxListBox focus() Method
</h3>
<div id="jqxLB"></div>
<br />
<input type="button" id="jqxBtn"
style="padding: 5px 20px;"
value="Set focus to the jqxListBox" />
</center>
<script type="text/javascript">
(document).ready(function () {
var data = [
"Computer Science",
"C Programming",
"C++ Programming",
"Java Programming",
"Python Programming",
"HTML",
"CSS",
"JavaScript"];
("#jqxLB").jqxListBox({
source: data,
width: "200px",
height: "100px",
});
("#jqxBtn").on("click", function () {
("#jqxLB").jqxListBox("focus");
});
});
</script>
</body>
</html>
输出:
focus method