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docs/pages/dynamic-samples/sample-reuse-page.html
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198
docs/pages/dynamic-samples/sample-reuse-page.html
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<!DOCTYPE HTML>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width">
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<title>changePage JSON Sample</title>
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<link rel="stylesheet" href="../../../themes/default/">
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<script src="../../../js/jquery.js"></script>
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<script src="../../../js/"></script>
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<script>
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$( document ).bind("mobileinit", function() {
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$.mobile.pushStateEnabled = false;
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});
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// Some sample categorized data. This data is in-memory
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// for demonstration purposes, but could be loaded dynamically
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// via ajax.
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var categoryData = {
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animals: {
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name: "Animals",
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description: "All your favorites from aardvarks to zebras.",
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items: [
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{
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name: "Pets",
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},
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{
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name: "Farm Animals",
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},
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{
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name: "Wild Animals",
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}
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]
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},
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colors: {
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name: "Colors",
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description: "Fresh colors from the magic rainbow.",
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items: [
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{
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name: "Blue",
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},
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{
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name: "Green",
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},
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{
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name: "Orange",
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},
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{
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name: "Purple",
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},
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{
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name: "Red",
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},
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{
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name: "Yellow",
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},
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{
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name: "Violet",
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}
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]
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},
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vehicles: {
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name: "Vehicles",
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description: "Everything from cars to planes.",
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items: [
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{
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name: "Cars",
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},
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{
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name: "Planes",
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},
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{
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name: "Construction",
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}
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]
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}
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};
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// Load a the data for a specific category, based on
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// the URL passed in. Generate markup for the items in the
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// category, inject it into an embedded page, and then make
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// that page the current active page.
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function showCategory( urlObj, options )
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{
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var categoryName = urlObj.hash.replace( /.*category=/, "" ),
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// Get the object that represents the category we
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// are interested in. Note, that at this point we could
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// instead fire off an ajax request to fetch the data, but
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// for the purposes of this sample, it's already in memory.
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category = categoryData[ categoryName ],
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// The pages we use to display our content are already in
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// the DOM. The id of the page we are going to write our
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// content into is specified in the hash before the '?'.
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pageSelector = urlObj.hash.replace( /\?.*$/, "" );
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if ( category ) {
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// Get the page we are going to dump our content into.
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var $page = $( pageSelector ),
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// Get the header for the page.
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$header = $page.children( ":jqmData(role=header)" ),
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// Get the content area element for the page.
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$content = $page.children( ":jqmData(role=content)" ),
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// The markup we are going to inject into the content
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// area of the page.
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markup = "<p>" + category.description + "</p><ul data-role='listview' data-inset='true'>",
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// The array of items for this category.
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cItems = category.items,
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// The number of items in the category.
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numItems = cItems.length;
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// Generate a list item for each item in the category
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// and add it to our markup.
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for ( var i = 0; i < numItems; i++ ) {
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markup += "<li>" + cItems[i].name + "</li>";
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}
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markup += "</ul>";
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// Find the h1 element in our header and inject the name of
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// the category into it.
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$header.find( "h1" ).html( category.name );
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// Inject the category items markup into the content element.
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$content.html( markup );
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// Pages are lazily enhanced. We call page() on the page
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// element to make sure it is always enhanced before we
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// attempt to enhance the listview markup we just injected.
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// Subsequent calls to page() are ignored since a page/widget
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// can only be enhanced once.
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$page.page();
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// Enhance the listview we just injected.
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$content.find( ":jqmData(role=listview)" ).listview();
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// We don't want the data-url of the page we just modified
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// to be the url that shows up in the browser's location field,
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// so set the dataUrl option to the URL for the category
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// we just loaded.
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options.dataUrl = urlObj.href;
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// Now call changePage() and tell it to switch to
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// the page we just modified.
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$.mobile.changePage( $page, options );
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}
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}
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// Listen for any attempts to call changepage.
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$(document).bind( "pagebeforechange", function( e, data ) {
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// We only want to handle changepage calls where the caller is
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// asking us to load a page by URL.
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if ( typeof data.toPage === "string" ) {
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// We are being asked to load a page by URL, but we only
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// want to handle URLs that request the data for a specific
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// category.
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var u = $.mobile.path.parseUrl( data.toPage ),
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re = /^#category-item/;
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if ( u.hash.search(re) !== -1 ) {
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// We're being asked to display the items for a specific category.
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// Call our internal method that builds the content for the category
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// on the fly based on our in-memory category data structure.
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showCategory( u, data.options );
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// Make sure to tell changepage we've handled this call so it doesn't
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// have to do anything.
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e.preventDefault();
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}
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}
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});
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</script>
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</head>
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<body>
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<div id="home" data-role="page">
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<div data-role="header"><h1>Categories</h1></div>
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<div data-role="content">
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<h2>Select a Category Below:</h2>
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<ul data-role="listview" data-inset="true">
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<li><a href="#category-items?category=animals">Animals</a></li>
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<li><a href="#category-items?category=colors">Colors</a></li>
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<li><a href="#category-items?category=vehicles">Vehicles</a></li>
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</ul>
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</div>
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</div>
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<div id="category-items" data-role="page">
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<div data-role="header"><h1></h1></div>
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<div data-role="content"></div>
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</div>
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</body>
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</html>
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return ( /^(:?\w+:)/ ).test( url );
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},
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//check if the specified url refers to the first page in the main application document.
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isFirstPageUrl: function( url ) {
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// We only deal with absolute paths.
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var u = path.parseUrl( path.makeUrlAbsolute( url, documentBase ) ),
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// Does the url have the same path as the document?
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samePath = u.hrefNoHash === documentUrl.hrefNoHash || ( documentBaseDiffers && u.hrefNoHash === documentBase.hrefNoHash ),
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// Get the first page element.
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fp = $.mobile.firstPage,
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// Get the id of the first page element if it has one.
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fpId = fp && fp[0] ? fp[0].id : undefined;
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// The url refers to the first page if the path matches the document and
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// it either has no hash value, or the hash is exactly equal to the id of the
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// first page element.
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return samePath && ( !u.hash || u.hash === "#" || ( fpId && u.hash.replace( /^#/, "" ) === fpId ) );
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},
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isEmbeddedPage: function( url ) {
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var u = path.parseUrl( url );
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// Check to see if the page already exists in the DOM.
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page = settings.pageContainer.children( ":jqmData(url='" + dataUrl + "')" );
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// If we failed to find a page in the DOM, check the URL to see if it
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// refers to the first page in the application.
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if ( page.length === 0 && $.mobile.firstPage && path.isFirstPageUrl( absUrl ) ) {
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page = $( $.mobile.firstPage );
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}
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// Reset base to the default document base.
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if ( base ) {
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base.reset();
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