I have been learning more about AJAX using PHP and wanted to ask about the relationship of loaded content to the page itis loaded into.
I have been using the AJAX Pagination script v1.2.2 i found at "dynamicdrive". I was able to properly implement the dynamic page load as expected and it works. The pages I load have images in them that i'd like to be able to add hyperlinks to. These links would change content on the original page with a similar function ( perhaps the ajax function .load() )
for some reason I can't seem to reference the objects on the original page fromt he loaded content to do any work. I noticed that when i "view source" on the page, I only see the original page and not the loaded content. I have been searching for anything I can use to determine how to interact between the original page and the loaded content. Is the "loaded" content a child page? i see a lot of references out there to iframes etc, but I know that this is not the method i'm using.
Any suggestions on the ralationship of these pages and how to interact betweent hem would be greatly apprecaited.
Thanks,
Silver
I can answer one part of your question - to view the source, try using Firefox extension - Developers tool bar, which allows you to view the 'Generated source'.
Or if you use element selector in any browser, it will show you the generated source.
Related
I'm looking to get information from an external website, by taking it from a div in their code. But using the file_get_contents() method doesn't work because the information isn't in the source code for the page. It only shows up after the page loads (It's available if you use an inspect element in the web browser).
Is there a way to do this? Or Am I just out of luck on that?
Is there a way to load whole new URL / page inside my site element so that you can interact with that page without refreshing my page? It's not a problem if it initially has to load with page refresh.
jQuery.load()?
jQuery.ajax()?
All I could find online was loading parts of your own site and there was no info about using that loaded page without refresing your own page. Example:
jQuery(document).ready(function() {
jQuery("#dynamic").load("single.php");
});
I've previously loaded new pages inside modal but I need it inside div or anything else without "overlay".
I think you are trying to inject content from another domain.
that means you want a part of your page load another domains content.
this page demonstrates the issue very clearly. take a look there and read the answers carefully.
I'm trying to code a seo friendly ajax portfolio right now. My goal is to provide javascript effects to users and normal html to bots/users without js.
Files:
index.php (starting point of my program)
aboutme.php (contains html code for "about me")
contact.php (contains html code for "contact")
The idea:
User visits index.php and clicks on "About me" -> loading animation appears -> aboutme.php gets loaded with ajax -> history.pushstate rewrites the url to aboutme.php.
-> When the user shares the current website url on fb/twitter/g+ the bots will get the correct title, body etc., as it is the normal html page without any javascript.
But my problem is: If other users open that page, they see directly the content. But I want to show them a loading animation first until the data got loaded with ajax (similar as they click on a link).
How can I achieve such an approach? Thank you very much!
Best way to do this, create a javascript file. Write the link tag into "head" part. This will make the javascript file downloaded before content. Javascript shows the animation, but at the same time browser will be downloading the content already in the background. On "document ready" event, stop animation.
This will let bots to access the content directly. Because javascript won't work for them.
To make your ajax content crawlable see https://developers.google.com/webmasters/ajax-crawling/, Bing supports this as well. Or use the HTML5 pushState, see http://www.seomoz.org/blog/create-crawlable-link-friendly-ajax-websites-using-pushstate, https://github.com/blog/760-the-tree-slider etc.
I've always thought this is more effort than its worth(generally), but to answer your question:
index.php, aboutme.php, contect.php should deliver full html.
certain links should have js event handlers intercept the click, and instead of loading aboutme.php, they load aboutme-content-only.php in the background. then update the dom and push state etc...
this way the site can easily degrade for those users who are first time visitors, as well as those whose browsers dont support push state or javascript.
I think that it is not a problem at all, keep your href of links as usual, then using JavaScript or jQuery change the default behavior of clicking link to load the linked contents with ajax.
As some of you may know, Google is now crawling AJAX. The implementation is by far something elegant, but at least it still applies to Yahoo and Bing AFAIK.
Context: My site is driven by Wordpress & HTML5. An Custom Post Type has tree types of content, and the contents of these are driven by AJAX. The solution I came for not using hashbangs (#!) until fully understand how to implement them is rather "risqué". Every link as HREF linking to *site.com/article-one/?tab=first_tab*, that shows only the contents of the selected tab (<div>Content...</div>). Like this:
This First Tab
As you may note, data-tab is the value that JavaScript sends with AJAX Get, that gets the related content and renders inside a container. At the other side, the server gets the variable and does a <?php get_template_part('tab-first-tab'); ?> to deliver the content.
About the risqué, well, I can see that Google and other search engines will fetch *http://site.com/article-one/?tab=first_tab* instead of http://site.com/article-one/, making users come to that URL instead of showing the home page with the tab content selected automatically.
The problem now is the implementation to avoid that.
Hashbang: From what I learned, I should do this.
HREF should become site.com/article-one/#!first-tab
JS should extract the "first-tab" of the href and pass it out to $_GET (just for the sake of not using "data-tab").
JS should change the URL to site.com/article-one/#!first-tab
JS should detect if the URL has #!first-tab, and show the selected tab instead of the default one.
Now, for the server-side implementation, here is where I'm kind lost in the woods.
How Wordpress will handle site.com/article-one/?_escaped_fragment_=first-tab?
Do I have to change something in .htaccess?
What should have the HTML snapshot? My guess is all the site, but with the requested tab showing, instead of showing only the content.
I think that I can separate what Wordpress will handle when it detects the _escaped_fragment_. If is requested, like by Google, it will show all the content plus the selected content, and if not, it's because AJAX is requesting it and will show only the content. That should be right?
I'm gonna talk third person.
Since this has no responses, I have a good one why you should not do this. Yes, the same reason why Twitter banged them:
http://danwebb.net/2011/5/28/it-is-about-the-hashbangs
Instead of doing hashbangs, you should make normal URIs. For example, an article with summary tab on should be "site.com/article/summary", and if it is the default one that pops out (or is it already requested) it also should change to that URI using pushState().
If the user selects the tab "exercises", the URL should change to "site.com/article/exercises" using pushState() while the site loads the content throught AJAX, and while you still maintain the original href to "site.com/article/exercises". Without JavaScript the user should still see the content - not only the content, the whole page with the tab selected.
For that to work, some editing to the .htaccess to handle the /[tab] in the URL should be done.
Basically I want to replicate the page changing effect found here, at http://timvandamme.com/
But instead of using #values I want to use PHP includes, mainly because I want the site to be as uber-seo-friendly as possible... but still have this nice effect.
So is there a way of doing this? I have a main index file which includes other php files in the centre using the usual 'GET' method, so my pages look like: "index.php?page=about"
In my jQuery code I want to have a declaration where if I click the navigation, the content scrolls up, then once the relevant PHP file has loaded, have the content scroll back down and show the new page content (whilst also of navigated to the new page in the address bar, so if the user clicks the back button in their browser, they return to the previous page).
I know how to code the scrolling bits, it's just literally the ajax loading includes / page navigation parts I'm struggling to work out :\
Any help would be MUCH appreciated! Thanks in advance.
Use standard links in your navigation. In your onClick function, use event.preventDefault() to prevent the pages from redirecting your actual users (but they still appear as normal links to search engines).
Foo
<script>$("a").click(function(event){
event.preventDefault();
navigate($(this).attr('href'));
});</script>
Use the onClick function of the links to change the page's content with AJAX (just like it appears on the site you linked), but additionally set up each "page" (using error documents, mod_rewrite or something) to display its content, but allow navigation in this same way. By doing so, you will have the same functionality with the search-friendliness you desire.
To add to the others, some search engines understand this problem and offer site map utilities. You can check out google's site map solutions here:
http://www.google.com/support/webmasters/bin/answer.py?hl=en&answer=156184
The site map will allow you to explicitly inform google about certain uri's (like http://timvandamme.com/#about).