我已将选项值实现为下拉菜单导航。我遇到的问题是当我从页面A更改为页面B时,我希望页面B处于活动状态,我希望它是下拉菜单中可见的主要选项,反之亦然。请看下面的代码:
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.4.2/jquery.mobile-1.4.2.min.css" />
<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
<script src="http://code.jquery.com/mobile/1.4.2/jquery.mobile-1.4.2.min.js"></script>
</head>
<body>
<!-- Start of index page -->
<div data-role="page" data-theme="b" id="page_a">
<div data-role="header" data-position="inline">
<h1>A</h1>
</div><!-- /header -->
<div class="ui-field-contain">
<label for="select-custom-1"></label>
<select name="select-custom-1" id="select-custom-1" data-native-menu="false">
<option value="#page_a">Page A</option>
<option value="#page_b">Page B</option>
</select>
<script>
$(function(){
// bind change event to select
$('#select-custom-1').bind('change', function () {
var url = $(this).val(); // get selected value
if (url) { // require a URL
$.mobile.changePage( url, { transition: "slide", changeHash: false });
}
return false;
});
});
</script>
</div>
<div data-role="content" data-theme="b">
<p>Page A</p>
</div><!-- /content -->
<div data-role="footer" data-theme="b">
</div><!-- /footer -->
</div><!-- /index page -->
<!-- Start of about page -->
<div data-role="page" data-theme="b" id="page_b">
<div data-role="header" data-position="inline">
<h1>B</h1>
</div><!-- /header -->
<div class="ui-field-contain">
<label for="select-custom-2"></label>
<select name="select-custom-2" id="select-custom-2" data-native-menu="false">
<option value="#page_a">Page A</option>
<option value="#page_b">Page B</option>
</select>
<script>
$(function(){
// bind change event to select
$('#select-custom-2').bind('change', function () {
var url = $(this).val(); // get selected value
if (url) { // require a URL
$.mobile.changePage( url, { transition: "slide", changeHash: false });
}
return false;
});
});
</script>
</div>
<div data-role="content" data-theme="b">
<p>Page B</p>
</div><!-- /content -->
<div data-role="footer" data-theme="b">
</div><!-- /footer -->
</div><!-- /about page -->
</body>
</html>
答案 0 :(得分:1)
首先,在每个页面上将所选属性添加到与页面匹配的选项,并为所有页面上的所有导航选择指定相同的类名(在我的示例中为class="navSelect"
)。所以在第a页:
<select name="select-custom-1" id="select-custom-1" data-native-menu="false" class="navSelect">
<option value="#page_a" selected="selected">Page A</option>
<option value="#page_b">Page B</option>
</select>
和第b页:
<select name="select-custom-2" id="select-custom-2" data-native-menu="false" class="navSelect">
<option value="#page_a">Page A</option>
<option value="#page_b" selected="selected">Page B</option>
</select>
现在从页面中删除脚本,而不是在页面底部的类名称上使用一个更改处理程序:
$(document).on("change", ".navSelect", function (e) {
var url = $(this).val(); // get selected value
var curPage = $("body").pagecontainer( "getActivePage" );
//reset this select to the current page
$(this).val("#" + curPage.prop("id")).selectmenu( "refresh", true );
if (url) { // require a URL
$.mobile.changePage(url, {
transition: "slide",
changeHash: false
});
}
});
脚本更改页面与原始页面一样,但它也会将select重置为当前页面ID,因此当您返回页面时,它会显示正确的值。另请注意,在jQM中,更新基础选择时,必须在窗口小部件上调用.selectmenu(“refresh”,true)。
这是 DEMO