So basically I need something similar that twitter has - when user scrolls down to the bottom of the page, new information from database automatically loads. Any suggestions how to create it or any examples? I know it can be done with AJAX, but could you please show a example, or a sample code?
It is called Infinite Scrolling (or Endless Scrolling). I think the most widespread solution is using Paul Irish's Infinite Scroll jQuery plugin. Also, you can find related information, documentation and demos in the Infinite Scroll page.
Related
I want to load more images in my website when I reach the bottom of my page. I'm using php and postgresql as my database.
For this post I simply load some text instead of image. I can write the code for it's equivalent.
So currently, I'm using a button at the bottom of my page, which when pressed re-loads the page and gives you more images(I'm displaying 50 images at a time).
But there are 2 problems with it, one being that the user will have to press the button again and again while I want it to happen automatically.
And the second one being that when new images are loaded, the previous ones are gone. I don't want to happen. For eg., if currently 1-50 images are present, my page later changes it to 51-100 while I want it to have all 1-100. I'm unable to solve this.
Please help. Thanks!
What you are looking for is commonly referred to as "infinite scroll pagination", while what you're asking for is techniclly possible using only PHP it would be a terrible user experience, as each reload would take the user to the top, and they would constantly have to continuously scroll further and further just to reach the location they were previously at.
Alternatively, handle this with JavaScript, an example: https://infinite-scroll.com/demo/full-page.
Doing simple Google searches reveals a plethora of options for JavaScript and JQuery plugins to achieve this.
An alternative, without the need for a plugin you can implement the answer to this:infinite-scroll jquery plugin
Simply call your PHP code in the form of an AJAX request when the bottom of the page is reached and append your new results. (this could be easily achieved with vanilla javascript as well).
Hope this helps.
I'm building a site where there will be four tiles on the front page. When a tile is selected, I want the content to pop up in like a window that will be a bit transparent so you can see the main page behind it.
I've successfully coded just that, getting the link to bring up another div that is otherwise hidden and I've even gotten it to load another html document. I accomplished this with XMLHttpRequest();. My question is, is there a more efficient way to do this? I know I've done something similar in PHP before in school and when I google, I do see that being a way to do it, but I'm also seeing jQuery and AJAX being mentioned. My overall goal is to get it to where if I want to update the CSS of the screens, that I only have to do that for the main page, and it affects the content pop-ups.
I hope I explained this well enough. Thank you for any advice!
It's very simple to do in jQuery:
$("#yourDivsId").load("/UrlOfYourIntendedMarkupDelivery?anyarguments=true");
I'm creating the effect that when I scroll my document to the bottom watching a set of post and get the last one, I start loading new posts in the same way as facebook does in the wall.
Well, the effect is not the same.
In facebook, when new content is loaded, the position in the document only scroll up a little bit to see that new content is ready but in the mine the effect differ. Sometimes it scroll down and other to the middle, etc...
Does anyone know any technic I could use?
Thanks.
you can do it with masonry infinite scroll
and also with Infinite Scroll by Paul Irish
Yes you can do it using simple php and jquery trick. See HERE
I would like to create a more button similar to facebook that loads more items on the wall.
Could someone please advice on how I could get this working in PHP. Could you please point me to a resource or let me know a way how I can acheive this.
I think what you seek is called an infinite scroller.
Check out this tutorial on how to create an infinite scrolling gallery on PHP. This one doesn't have the "more" button, it loads more content automatically every time you scroll the page down to the bottom. But it's easy enough to adapt it to work with a "more" button.
Edit: here's another tutorial, this time with the button.
hi im using ajax to extract all the pages into the main page but am not being able to control the refresh , if somebody refreshes the page returns back to the main page can anybody give me any solutions , i would really appreciate the help...
you could add anchor (#something) to your URL and change it to something you can decode to some particular page state on every ajax event.
then in body.onload check the anchor and decode it to some state.
back button (at least in firefox) will be working alright too. if you want back button to work in ie6, you should add some iframe magic.
check various javascript libraries designed to support back button or history in ajax environment - this is probably what you really need. for example, jQuery history plugin
You can rewrite the current url so it gives pointers to where the user was - see Facebook for examples of this.
I always store the 'current' state in PHP session.
So, user can refresh at any time and page will still be the same.
if somebody refreshes the page returns back to the main page can anybody give me any solutions
This is a feature, not a bug in the browser. You need to change the URL for different pages. Nothing is worse then websites that use any kind of magic either on the client side or the server side which causes a bunch of completely different pages to use the same URL. Why? How the heck am I gonna link to a specific page? What if I like something and want to copy & paste the URL into an IM window?
In other words, consider the use cases. What constitutes a "page"? For example, if you have a website for stock quotes--should each stock have a unique URL? Yes. Should you have a unique URL for every variation you can make to the graph (i.e. logarithmic vs linear, etc)? Depends--if you dont, at least provide a "share this" like google maps does so you can have some kind of URL that you can share.
That all said, I agree with the suggestion to mess with the #anchor and parse it out. Probably the most elegant solution.