我有JQuery Mobile-1.0.js文件。
// Load a page into the DOM.
$.mobile.loadPage = function (url, options) {
// This function uses deferred notifications to let callers
// know when the page is done loading, or if an error has occurred.
var deferred = $.Deferred(),
// The default loadPage options with overrides specified by
// the caller.
settings = $.extend({}, $.mobile.loadPage.defaults, options),
// The DOM element for the page after it has been loaded.
page = null,
// If the reloadPage option is true, and the page is already
// in the DOM, dupCachedPage will be set to the page element
// so that it can be removed after the new version of the
// page is loaded off the network.
dupCachedPage = null,
// determine the current base url
findBaseWithDefault = function () {
var closestBase = ($.mobile.activePage && getClosestBaseUrl($.mobile.activePage));
return closestBase || documentBase.hrefNoHash;
},
// The absolute version of the URL passed into the function. This
// version of the URL may contain dialog/subpage params in it.
absUrl = path.makeUrlAbsolute(url, findBaseWithDefault());
// If the caller provided data, and we're using "get" request,
// append the data to the URL.
if (settings.data && settings.type === "get") {
absUrl = path.addSearchParams(absUrl, settings.data);
settings.data = undefined;
}
// If the caller is using a "post" request, reloadPage must be true
if (settings.data && settings.type === "post") {
settings.reloadPage = true;
}
// The absolute version of the URL minus any dialog/subpage params.
// In otherwords the real URL of the page to be loaded.
var fileUrl = path.getFilePath(absUrl),
// The version of the Url actually stored in the data-url attribute of
// the page. For embedded pages, it is just the id of the page. For pages
// within the same domain as the document base, it is the site relative
// path. For cross-domain pages (Phone Gap only) the entire absolute Url
// used to load the page.
dataUrl = path.convertUrlToDataUrl(absUrl);
// Make sure we have a pageContainer to work with.
settings.pageContainer = settings.pageContainer || $.mobile.pageContainer;
// Check to see if the page already exists in the DOM.
page = settings.pageContainer.children(":jqmData(url='" + dataUrl + "')");
// If we failed to find the page, check to see if the url is a
// reference to an embedded page. If so, it may have been dynamically
// injected by a developer, in which case it would be lacking a data-url
// attribute and in need of enhancement.
if (page.length === 0 && dataUrl && !path.isPath(dataUrl)) {
page = settings.pageContainer.children("#" + dataUrl)
.attr("data-" + $.mobile.ns + "url", dataUrl);
}
// If we failed to find a page in the DOM, check the URL to see if it
// refers to the first page in the application. If it isn't a reference
// to the first page and refers to non-existent embedded page, error out.
if (page.length === 0) {
if ($.mobile.firstPage && path.isFirstPageUrl(fileUrl)) {
// Check to make sure our cached-first-page is actually
// in the DOM. Some user deployed apps are pruning the first
// page from the DOM for various reasons, we check for this
// case here because we don't want a first-page with an id
// falling through to the non-existent embedded page error
// case. If the first-page is not in the DOM, then we let
// things fall through to the ajax loading code below so
// that it gets reloaded.
if ($.mobile.firstPage.parent().length) {
page = $($.mobile.firstPage);
}
} else if (path.isEmbeddedPage(fileUrl)) {
deferred.reject(absUrl, options);
return deferred.promise();
}
}
// Reset base to the default document base.
if (base) {
base.reset();
}
// If the page we are interested in is already in the DOM,
// and the caller did not indicate that we should force a
// reload of the file, we are done. Otherwise, track the
// existing page as a duplicated.
if (page.length) {
if (!settings.reloadPage) {
enhancePage(page, settings.role);
deferred.resolve(absUrl, options, page);
return deferred.promise();
}
dupCachedPage = page;
}
var mpc = settings.pageContainer,
pblEvent = new $.Event("pagebeforeload"),
triggerData = { url: url, absUrl: absUrl, dataUrl: dataUrl, deferred: deferred, options: settings };
// Let listeners know we're about to load a page.
mpc.trigger(pblEvent, triggerData);
// If the default behavior is prevented, stop here!
if (pblEvent.isDefaultPrevented()) {
return deferred.promise();
}
if (settings.showLoadMsg) {
// This configurable timeout allows cached pages a brief delay to load without showing a message
var loadMsgDelay = setTimeout(function () {
$.mobile.showPageLoadingMsg();
}, settings.loadMsgDelay),
// Shared logic for clearing timeout and removing message.
hideMsg = function () {
// Stop message show timer
clearTimeout(loadMsgDelay);
// Hide loading message
$.mobile.hidePageLoadingMsg();
};
}
if (!($.mobile.allowCrossDomainPages || path.isSameDomain(documentUrl, absUrl))) {
deferred.reject(absUrl, options);
} else {
// Load the new page.
$.ajax({
url: fileUrl,
type: settings.type,
data: settings.data,
dataType: "html",
success: function (html, textStatus, xhr) {
//pre-parse html to check for a data-url,
//use it as the new fileUrl, base path, etc
var all = $("<div></div>"),
//page title regexp
newPageTitle = html.match(/<title[^>]*>([^<]*)/) && RegExp.$1,
// TODO handle dialogs again
pageElemRegex = new RegExp("(<[^>]+\\bdata-" + $.mobile.ns + "role=[\"']?page[\"']?[^>]*>)"),
dataUrlRegex = new RegExp("\\bdata-" + $.mobile.ns + "url=[\"']?([^\"'>]*)[\"']?");
// data-url must be provided for the base tag so resource requests can be directed to the
// correct url. loading into a temprorary element makes these requests immediately
if (pageElemRegex.test(html)
&& RegExp.$1
&& dataUrlRegex.test(RegExp.$1)
&& RegExp.$1) {
url = fileUrl = path.getFilePath(RegExp.$1);
}
if (base) {
base.set(fileUrl);
}
//workaround to allow scripts to execute when included in page divs
all.get(0).innerHTML = html;
page = all.find(":jqmData(role='page'), :jqmData(role='dialog')").first();
//if page elem couldn't be found, create one and insert the body element's contents
if (!page.length) {
page = $("<div data-" + $.mobile.ns + "role='page'>" + html.split(/<\/?body[^>]*>/gmi)[1] + "</div>");
}
if (newPageTitle && !page.jqmData("title")) {
if (~newPageTitle.indexOf("&")) {
newPageTitle = $("<div>" + newPageTitle + "</div>").text();
}
page.jqmData("title", newPageTitle);
}
//rewrite src and href attrs to use a base url
if (!$.support.dynamicBaseTag) {
var newPath = path.get(fileUrl);
page.find("[src], link[href], a[rel='external'], :jqmData(ajax='false'), a[target]").each(function () {
var thisAttr = $(this).is('[href]') ? 'href' :
$(this).is('[src]') ? 'src' : 'action',
thisUrl = $(this).attr(thisAttr);
// XXX_jblas: We need to fix this so that it removes the document
// base URL, and then prepends with the new page URL.
//if full path exists and is same, chop it - helps IE out
thisUrl = thisUrl.replace(location.protocol + '//' + location.host + location.pathname, '');
if (!/^(\w+:|#|\/)/.test(thisUrl)) {
$(this).attr(thisAttr, newPath + thisUrl);
}
});
}
//append to page and enhance
// TODO taging a page with external to make sure that embedded pages aren't removed
// by the various page handling code is bad. Having page handling code in many
// places is bad. Solutions post 1.0
page
.attr("data-" + $.mobile.ns + "url", path.convertUrlToDataUrl(fileUrl))
.attr("data-" + $.mobile.ns + "external-page", true)
.appendTo(settings.pageContainer);
// wait for page creation to leverage options defined on widget
page.one('pagecreate', $.mobile._bindPageRemove);
enhancePage(page, settings.role);
// Enhancing the page may result in new dialogs/sub pages being inserted
// into the DOM. If the original absUrl refers to a sub-page, that is the
// real page we are interested in.
if (absUrl.indexOf("&" + $.mobile.subPageUrlKey) > -1) {
page = settings.pageContainer.children(":jqmData(url='" + dataUrl + "')");
}
//bind pageHide to removePage after it's hidden, if the page options specify to do so
// Remove loading message.
if (settings.showLoadMsg) {
hideMsg();
}
// Add the page reference and xhr to our triggerData.
triggerData.xhr = xhr;
triggerData.textStatus = textStatus;
triggerData.page = page;
// Let listeners know the page loaded successfully.
settings.pageContainer.trigger("pageload", triggerData);
deferred.resolve(absUrl, options, page, dupCachedPage);
},
error: function (xhr, textStatus, errorThrown) {
//set base back to current path
if (base) {
base.set(path.get());
}
// Add error info to our triggerData.
triggerData.xhr = xhr;
triggerData.textStatus = textStatus;
triggerData.errorThrown = errorThrown;
var plfEvent = new $.Event("pageloadfailed");
// Let listeners know the page load failed.
settings.pageContainer.trigger(plfEvent, triggerData);
// If the default behavior is prevented, stop here!
// Note that it is the responsibility of the listener/handler
// that called preventDefault(), to resolve/reject the
// deferred object within the triggerData.
if (plfEvent.isDefaultPrevented()) {
return;
}
// Remove loading message.
if (settings.showLoadMsg) {
// Remove loading message.
hideMsg();
//show error message
$("<div class='ui-loader ui-overlay-shadow ui-body-e ui-corner-all'><h1>" + $.mobile.pageLoadErrorMessage + "</h1></div>")
.css({ "display": "block", "opacity": 0.96, "top": $window.scrollTop() + 100 })
.appendTo(settings.pageContainer)
.delay(800)
.fadeOut(400, function () {
$(this).remove();
});
}
deferred.reject(absUrl, options);
}
});
}
return deferred.promise();
};
"Error Loading Page"这是用于在页面中显示错误消息的代码。在这里，我想显示网络连接失败的警报消息，"Please check your net connection"而不是下图。
注意：我不想更改 pageloaderrormessage。想要停止获取页面错误消息，而不是像Show Network Error in android那样启用我的网络错误条件。如果用户在警报对话框中按下“确定”，我会将它们导航到 Reload.html。
请告诉我在哪里可以检查该情况以及我必须在哪里更改错误消息？