I need examples for adding a throbber during page loads - javascript

Does someone have a code example of running an animated throbber during asp.net page loads? More than one example would be appreciated.

A throbber is generally just an animated .gif that holds the place of content. When the content is loaded, that image is hidden or removed from the dynamic element and replaced with the actual content (or vice versa if you're making a form or similar).
Here's a link to the Facebook "throbber" -
http://static.ak.fbcdn.net/rsrc.php/v1/zb/r/GsNJNwuI-UM.gif
Here's a link to a Wikipedia asset: https://upload.wikimedia.org/wikipedia/commons/d/de/Ajax-loader.gif
Matching article: https://en.wikipedia.org/wiki/Throbber
As you can see, it's an animated gif.
Update: If you're still using this for reference then please check out the CSS throbbers in various projects.

On http://ajaxload.info/ you can generate your own :)

You can use asp.net AJAX UpdateProgress control. Put your throbber image in the ProgressTemplate.
The issue with that is you will have to use UpdatePanel for that. If you are already using it nice.
Another options you might want to look into:
Use jQuery to show/hide your throbber.
jQuery UI's progressbar plugin.

Related

Include code from jQuery load() onto page source code [duplicate]

Many aspects of my site are dynamic. I am using jquery.
I have a div which once the DOM is ready is populated using load().
Then if a button is clicked, using load() once again, this value is replaced by another value.
This kind of setup is common across my site. My homepage is essentially lots of dynamically loaded, refreshed, and changeable content.
What are the repercussions of this for SEO?
Ive seen sites where each page is loaded using load() and then displayed using the animation functions... It looks awesome !
People have posed this question before, but noone has answered it properly.
So any ideas? JQUERY AND SEO??
Thanks
EDIT
Very interesting points. I dont want to overdo my site with jaascript.. just where neccesary to make it look good - my homepage however is one place of concern.
So when the DOM is readY, it loads content into a div. On clicking a tab, this content is changed. I.E No JS, No content.
The beauty here for me is that, there is no duplicated code. Is the suggestion here that i should simply 'print' some default content, then have the tabs link to pages (with the same content) if JS is disabled. I.E sacrifice a little duplicate code for SEO?
As far as degrading goes, my only other place of concern is tabs on the same page.. I have 3 divs, all containing content. On this page two divs are hidden until a tab is clicked. I used this method first before i started playing with JS. Would it perhaps be best to load() these tabs, then have the tab buttons link to where the content is pulled from?
Thanks
None of the content loaded via JavaScript will be crawled.
The common and correct approach is to use Progressive Enhancement: all links should be normal <a href="..."> to actual pages so that your site "makes sense" to a search spider; and the click() event overrides the normal functionality with load() so normal users with JavaScript enabled will see the "enhanced" version of your site.
If your content is navigable when JavaScript is turned off, you'll be a good ways toward being visible to search engines.
Note that search engine crawlers won't be submitting any forms on your site, so if you have any or elements that are meant to be navigating between your site's content pages, that content is not navigable by search engines.
Here is a guidelines how to make Google to crawl content loaded with ajax: http://code.google.com/web/ajaxcrawling/docs/getting-started.html
I use jquery load() asynchronous page load. It greatly improves user experience, but not seo-friendly. Here's the only solution I have found so far:
On first load I do not use jquery load() and try to write cookie with javascript.document.cookie = 'checkjs=on';
On next page load if php script finds this cookie it means that javascript is enabled and jquery load() can be used. If there's no such cookie then javascript is off (probably spider came), so jquery load() is not used.
if (!$_COOKIE['checkjs'] || $_COOKIE['checkjs']!='on'){echo 'js is off, hello Google!'; } else {echo 'js is on, can use jquery load';}
This way I can be sure that most of users can benefit from asynchronous page blocks load, exept for the very first load. And spiders get all content too.
In your case you could just load the same page with new parameter that makes another tab active. Spider is gonna be happy.

How to load html from clicking a div class button without page refresh

I'm sorry for asking a simple question as I'm still learning html/css/js. What I want to do is to be able to click on this button that is a div class made from css and js, to load it's content without refreshing the page, which I believe requires ajax or jquery, but not sure how. Here is my github page danielroberto.github.io and the repo https://github.com/danielroberto/danielroberto.github.io so you can get an idea of what I mean. I basically want to click on any of the navigation buttons and then loads whatever content I want without redirecting to whole new html page. For example, when I want to click on the "photography" button, I want the button effect to happen while my images load on the bottom without redirecting to something like photography.html. Similar to clicking on the "design" button, I want it to transition and load my content.
There is a wealth of resources on the net to get the intro you need to AJAX - the technique of loading parts of a webpage instead of the whole thing.
You correctly suggest that you could use the jQuery JavaScript library to do this - there are lots of alternatives, but that's easy to learn, and is widely used on the net. Tried and tested!
Start here: http://www.w3schools.com/jquery/jquery_ajax_intro.asp
That would only be if you are planning to use some server-side technology to serve up your images.
If you are just going to manually set a list of images to show, and you want the buttons to cycle through these, then you're probably best just to build a carousel of some kind, using a jQuery carousel plugin, and include it all in your HTML markup from the beginning. Loads to choose from or get inspired by here: https://plugins.jquery.com/tag/carousel/.
Also, you should size your images to fit the screen you are serving them to. I recommend you look at using srcset. Your image on the test site was 4600px wide! Check this out: https://css-tricks.com/responsive-images-youre-just-changing-resolutions-use-srcset/
I hope it goes well. The early days can be hard work but you'll soon get the hang of it.
You could store your content in a var in your js. Then when your button is clicked you can call the function which creates a text node or an element and append that to your div.
HTML
<button onClick="function()"></button>
<div id="show-data">
</div>
JS
var newText = 'Stuff here';
function function() {
var div;
div = document.getElementById('show-data');
div.appendChild(document.createTextNode(newText));
}
You can easily edit the html of an element when clicking a button using jQuery
HTML
<div class="my-button">click here</div>
<div class="my-content">init content</div>
JS
contentElement = $('.my-content');
$('.my-button').click(function() {
contentElement.html('new content');
});
https://jsfiddle.net/jaxon58/zp9mvu38/

Load a html page in a div by clicking an image

I have an image and i want, once i click it, that a particular html page is displayed into a specific div. I found several answer yet, but none of them seems to work.
I'm thinking something simple with jquery, like the answer given here: display html file in a div
What's your solution ?
Thanks in advance.
EDIT1
I want to load an internal html page ( not an external page from another webiste ) by clicking an image.
This is the code i used taking example from the answer on the link above.
<script type="text/javascript">$(document).ready(function(){$("mainscreen").load("/home/dontrythisathome/Programmazione/HTML/Progetto-Corso-Inglese/Misc/FILE/HTML/ChiSiamo.html");}</script>
"mainscreen" is the final div when i want to display the html page.
Inside the function .load() there is the path of the html page.
But no html page is displayed into the div.
EDIT2: I found the silly mistake. I use this structure: when the correct position of the elements is . I could remove also the element but i'm using CSS and i'm more comfortable to place elements than using tag options instead. Thanks for all your replies. Tomorrow i'll see if the code with jquery works.
I think your Problem is, that when you load another website using .load().
All the other websites CSS/JavaScript gets loaded and yours gets overwritten.
Could you tell us, what you are trying to accomplish?
Are you loading a html-page from your own website or an external url?
If you dont care for the styles that other website uses, you could do something like this:
.load("example.com/some.html #content");
This loads the url you specifies and just copys the content of the HTML-Element that corresponds to this selector into your target element. (ONLY INLINE-CSS will be applyed that way, you would need to do that styling manually)
EDIT: Thank you for updateing your question.
You are trying to load a file from your filesystem.
Add file:// in front of the path to your .html file.
NOTE: Especially when you are trying to use AJAX you should use a local website and work with relative paths! This makes it much easier to deploy the website afterwards as you do not have to rewrite all your URLs.
Here is jsFiddle
Your html code
<img class="img" src="http://www.lessons4living.com/images/penclchk.gif" width=100 height=100>
<div class="targetDiv"></div>
Your javascript
$(document).ready(function(){
$(".img").click(function(){ //capture the event and ignite your work
loadPage("http://fiddle.jshell.net/"); //call our function
});
});
function loadPage(link){
$.get(link,function(data){ //dont forget cross-browser rules.
$(".targetDiv").append(data) //appended in to your div
})
};
Or you can use .load function with link parametre.
Lets say you have the following HTML code.
<div id="mainscreen">click on the image to load html …</div>
<img id="js-image" src="http://cl.ly/image/0A1P1s3r2M0u/Bildschirmfoto%202014-05-24%20um%2021.59.23.png" />
And some JavaScript code (with jQuery).
var image = document.getElementById('js-image'),
mainscreen = document.getElementById('mainscreen');
$(image).on('click', function() {
$(mainscreen).load("http://fiddle.jshell.net/florianpircher/tmRy9/show/");
});
Demo: http://jsfiddle.net/florianpircher/6wXBu/1/
You can not use $("mainscreen") because that would select <mainscreen> and not #mainscreen. In jQuery, you need a CSS-selector (like $("#mainscreen")).

is there anyway to open href links in message box?

i want to open html href link files in message box or any display box.( sorry i dont know, exact word for box.)
is there any way to open href links in any kind of display boxes.? i need answer only in JavaScript technology. Help me
I don't think an alert() or confirm() or any other built-in browser dialog box can display more than just simple text. But you can have any HTML content you want in a modal div dialog. The jQuery UI Dialog is a popular example. You don't need to use that plugin, though it would make it easy.
Essentially you just render a hidden element to the page (commonly a div) and respond to some page event by styling the element to "float" over the rest of the page. That element, since it's part of the DOM like anything else, can contain any HTML you'd like.
Take a look at jQuery's fancybox -> Fancy Box
well depending on how you building your web app. You could integrate twitter bootstrap, it has tons of great JavaScript plugins. a modal might solve your problem.
http://getbootstrap.com/2.3.2/javascript.html#modals
Alternative you can uses a lightbox, I see someone has already mentioned fancybox. The second version is now out.
its supports images, iframe, and divs as conetent
http://fancyapps.com/

jQuery Thickbox Issue

I'm a jQuery newb. I'm building a Online Shop and I'm using jQuery plugin 'Thickbox' (http://jquery.com/demo/thickbox). The Online Shop is set up to display a 'Enlarged Image' which runs the Thickbox JS script and shows an image.
A problem occurs as the data is placed on the page thru a CMS system (using Ajax I believe?). When you choose another product from the 'Choose Type' select drop down new data from the CMS system is placed on the page and the Thickbox script isn't applied as it can't see the new data.
I've been playing around with a fix I've found (http://www.codynolden.com/blog/2009/01/thickbox-and-ajax-using-livequery) but I can't seem to apply it to my website?
A live example of my site: http://madisonlane.businesscatalyst.com/_product_36331/AAA-_Autumn_Dress
Any ideas?
in thickbox.js:
$(domChunk).click(function(){
was replaced with this:
$(domChunk).live(click, function(){
Stuart got it right: thank you so much!
I was stuck with a similar problem issue: in my case, the target of an appended link (through jQuery .append() method ) was not loaded in a thickbox.
My jQuery code was executed in a document.ready() function:
$("#subpages").append('','<a href="..." class="thickbox" [...]');
Simply adding:
tb_init('.thickbox'); //required to reinitialize thickbox as DOM was manipulated
just after the last line fixed the problem.
Are you using an IFRAMED thickbox? You may have better luck with that, since by default thickbox is just displayed in a DIV. You need to add &TB_iframe=true to your URL's querystring to get this
I may not be reading your question right, but from the way it sounds, content is being destroyed and created with new item selections, right?
If that's the case, you'll need to call tb_init('.some-selector') when you load new content. I recall having to do this for conditionally setting up a thickbox once. Thickbox works by going through your page and wiring up click events to link with class "thickbox." By using tb_init(), you can wire your stuff up at any time on any selector you like. Check out the source code for Thickbox to see what I mean.

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