jQWidgets jqxDropDownList loadFromSelect()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、被广泛支持的框架。jqxDropDownList部件是一个jQuery下拉列表,它包含了一个显示在下拉列表中的可选择项目的列表。
loadFromSelect()方法用于从一个’select’标签中加载列表项。它接受一个字符串类型的单一参数id,并且不返回任何值。
语法:
$("Selector").jqxDropDownList('loadFromSelect', 'select');
链接的文件:从链接https://www.jqwidgets.com/download/,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” />
<link rel=”stylesheet” href=”jqwidgets/styles/jqx.energyblue.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>
<script type=”text/javascript” src=”jqwidgets/jqxdropdownlist.js”></script>
下面的例子说明了jqxDropDownList在jQWidgets中loadFromSelect()方法。
示例:
<!DOCTYPE html>
<html lang="en">
<head>
<link rel="stylesheet" href=
"jqwidgets/styles/jqx.base.css" type="text/css" />
<link rel="stylesheet" href=
"jqwidgets/styles/jqx.energyblue.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>
<script type="text/javascript"
src="jqwidgets/jqxdropdownlist.js"></script>
</head>
<body>
<center>
<h1 style="color: green;">
GeeksforGeeks
</h1>
<h3>
jQWidgets jqxDropDownList loadFromSelect() Method
</h3>
<div id='jqxDDL'></div>
<select id="select">
<option>Computer Science</option>
<option>C Programming</option>
<option>C++ Programming</option>
<option>Java Programming</option>
<option>Python Programming</option>
<option>HTML</option>
<option>CSS</option>
<option>JavaScript</option>
<option>jQuery</option>
<option>PHP</option>
<option>Bootstrap</option>
</select>
<input id="jqxBtn" type="button"
value="Load From Select"
style="padding: 5px 15px; margin-top: 50px;">
</center>
<script type="text/javascript">
(document).ready(function() {
("#jqxDDL").jqxDropDownList({
theme: 'energyblue',
width: '200px',
height: '25px',
selectedIndex: 2
});
var flag = false;
("#jqxBtn").click(function() {
("#jqxDDL").jqxDropDownList('loadFromSelect', 'select');
});
("#jqxDDL").on('select', function(event) {
if (event.args && !updating) {
("#select").val(event.args.item.value);
}
});
("#select").on('change', function(event) {
updating = true;
var index =("#select")[0].selectedIndex;
("#jqxDDL").jqxDropDownList('selectIndex', index);
("#jqxDDL").jqxDropDownList('ensureVisible', index);
updating = false;
});
});
</script>
</body>
</html
输出: