Is it possible to use AJAX to load a page, say pageB, into pageA. Where pageB uses AJAX to load some information into it from pageC?
The call on pageB doesn't seem to be made even though the call to pageB returns a ready state of 4.
Is it actually possible?
Thanks
Related
For a website, which doesn't use AJAX I'm using OnDocumentComplete event to know when the page loading is complete.
My question is, how can I detect when website, which uses AJAX requests is ready (e.g. when a website which is fetching some search results by using AJAX finished its work) ?
Ok here is a trick i developed my self.
1-in your html page make a div and set its text to "false".
2-in you server side put a javascript at the end of your returning code. for example your site returns following text upon an ajax call.
a
b
c
d
e
so after this text put a javascript code that will change the text of div from "false" to "true"
so what will happen is that once you receive all the data from ajax call you will also receive the javascript code and that code will run and set the value of div.
so in your page once all data is received you will see the indicator div. and you will know that you have received all data. you can also run functions in similar way upon completion of data.
I want to create a page with will be filled with dynamic info using Ajax (JQuery). The info will come from various GETs I need to do in other URLs.
I'll be using Sinatra + JQuery to to that, but as my WEB experience is almost null and don't have any idea how do to it right.
The requisites for this are:
Each time a GET completes, a new line of information should appear on the page.
If the GET could not be complete, a default info appear on the page.
My idea so far is to do something like this:
Have my controller performing each GET inside a thread.
Each time a thread ends, with success or not, I inform the view of the result and render a partial
I'll have as many partial as I need (for each GET I must do)
The first time I load the page I fill in the default info, them I update via AJAX with the successful GET responses
This does not seem the correct approach, so I'm asking someone that already did something similar or has more experience on this some help.
You start off with a simple get('/'){} route that holds the default message (or any other GET route). Then you have your other GET routes that you want to display on your default route. In Sinatra you can check whether a request is an xhr-request or not with a request.xhr? If you have an xhr request you return a json value to your view, otherwise reject the request or render a view with proper html. This is on your sinatra backend. In your views you can use JQuery or any other JS library or plain JS to handle asynchronous data requests. You can use the ajax function in JQuery to request data from your routes and then add them to your DOM. It's as simple as that :)
Now you will have to investigate on the JQuery site how to make ajax requests and how to append data to existing DOMs. That's all there is to it.
If I have a controller method that sets flash.success("some.i18n.key"); and I render a page that is loaded via ajax that item does not get removed from flash. Even though I've rendered the content to the screen (html loaded into a div in the success handler of my ajax post) the next page I visit still has the success message in flash. Pages that work with a normal form post,non ajax) this issue does not happen. Any idea whats going on?
Further investigation seems like this might be some sort of race condition. When I do a normal post and the FLASH cookie is returned it expires immediately and on the next request it is not sent back to the server. In the case of the AJAX post and then a subsequent request the cookie IS sent back to the server.
flash values are kept for one redirect. If you call render in your controller at the end of your method, you do not issue a redirect, so values will be available for the next request. To avoid this you have the choice :
use renderArgs in your method to pass your value to the view
at the end of your method, do not call render but call another method of the controller, thus you will issue a redirect instead of a direct render.
Since play 2 they changed the flashing a bit, instead of 2 maps (incoming, outgoing) there is just one.
What I end up doing is calling:
#flash.clear()
Just after the flash messages are rendered (in the view). This way, you are sure they are rendered just once, regardless of weather you use direct render, or redirect.
I have a mobile site which completely runs using AJAX, and hash code, basically each page click is a link, such as
<a href='http://some-domain.com/my-page-122.php" hash-id='122'>linkage</a>
Meaning that the page itself exists and it has ON IT google analytics page, HOWEVER, on the ajax request, I only ask to load a certein <div> on said page using jQuery's load(), so my question is:
because the page is called for in it's entirety with the google analytics code and everything, will it still record it as a page view even though only a portion is injected to the page?
The reason why I'm asking is because this site is getting around 500 uniques per day, and we want to change it to this new AJAXy form, so not recording analytics is a big no-no.
If you use jQuery you can bind to the global AjaxComplete event to fire a Pageview everytime an Ajax call completes:
jQuery(document).ajaxComplete(function(e, xhr, settings){
var d = document.location.pathname + document.location.search + document.location.hash;
_gaq.push(['_trackPageview', d]);
});
If you update the Anchor every time you do an Ajax call this will fire the full path including the anchor part of the url.
Note that if you load content using .load that has the Google Analytics Tracking code in it, it will run that code and fire a second pageview. So you want to make sure you don;t include the GATC on the ajax content to avoid double pageviews.
Analytics won't record it automatically. Assuming you're using the asynchronous code you can record as many pageviews as you want by writing to the gaq array using an explicitly set URL:
_gaq.push(['_setAccount', 'UA-12345-1']);
_gaq.push(['_trackPageview', '/home/landingPage']);
In this case you can build whatever URL you want where they have '/home/landingPage'. Note that if _gaq was already properly instantiated and _setAccount was already pushed then you only need to push the _trackPageview.
Also, the event can be in code returned by your AJAX, or it can be in the click event of your button or whatever is launching the AJAX request.
See http://code.google.com/apis/analytics/docs/gaJS/gaJSApiBasicConfiguration.html#_gat.GA_Tracker_._trackPageview
In JQtouch, any link is automatically convert into ajax call. I want to detect the moment the ajax call was send. This is so that i could insert a loading screen to let users know that the system is processing the submission.
I search through jqTouch API and apparently they only have callback events for page animation. Am i missing out on anything?
You can use the core jQuery global AJAX functions, for example $.ajaxStart() for the start of a batch of requests, or $.ajaxSend() to detect the beginning of each request. Something like this:
$(document).ajaxSend(function() {
alert("Request sending...");
});
Ready up on jQuery's Ajax Events: http://docs.jquery.com/Ajax_Events .
You may bind these to elements as follows:
$("...").bind("ajaxSend",myFunction) ;
every element specified this way will then react to a Ajax call being made with the specified callback function.