Develop Reference

Get a substring from url jquery

I am working a one-page website that uses Jquery and ajax. Because it is a one page website, its url is always something like mydomain.com/#contact. Now I have successfully made an ajax call and want to refresh the page and scroll to a particular section of the page with a different id say, mydomain.com/#home. In order to do this, I will have to get the current url using document.URL (let's say it returns mydomain.com/#contact), then I remove /#contact and replace it with /#home.
I know I can replace /#contact with /#home by simply concatenating it with + but I don't know the Jquery function (if any) to remove the /#contact.
Thanks so much for any help

Simply set the hash, you don't need to evaluate the existing URL:
window.location.hash = "Home";

Execute a second function when a first function completes W/O a callback parameter

Background: I'm running A/B tests for a website via VWO. I can write a script that is run when the page loads, but I cannot access any of the website's preexisting scripts or alter their code in any way besides "overwriting" in JS (e.g. remove divs, change CSS properties, append divs) after their page loads.
Problem: When the page loads, there is an empty <div id="priceinfo"></div>. Elsewhere on the page, there is an <img ...>. Inside RequestPriceInfo(), the function outputs HTML to div#priceinfo based on certain form field values on the page. It also appends an "order" button (which is actually not a button at all, but an image nested in anchor tags). I'm trying to change the source for the "button" image using JQuery's attr() function.
Progress: None. I have tried using $('a#requestPrice').click(function() {...} ); but it is not working to change the source of the image, I presume because the content has not yet loaded onto the page immediately when a#requestPrice is clicked and my function runs. I need a way to tell when RequestPriceInfo() has been fired and completed, but there is no callback parameter on RequestPriceInfo() and I don't have access to the script to alter it and add one.
Potentially Useful Info: There is a variable, priceRequested, which is changed from false to true when RequestPriceInfo() runs. Though I realize nothing about this solution is going to be elegant, it seems unreasonable to use Object.prototype.watch() to monitor the variable, but I'm running out of ideas.
How can I detect when RequestPriceInfo() has completed to execute my function without editing the function to add a callback parameter?

What about using CSS... your script could add a class to <div id="priceinfo"></div>, like maybe <div id="priceinfo" class="newButton"></div>. Then, in the CSS, you'd hide the img for #priceInfo.newButton and insert your new image as a background image for the anchor.

Here's one way
var oldRequestPrice = RequestPriceInfo;
RequestPriceInfo = function(){
oldRequestPrice();
// Function completed, handle here
}
EDIT
As the question seems to imply that RequestPriceInfo is an asynchronous API call, have a look at this question: Add a "hook" to all AJAX requests on a page
This will keep track of all Ajax requests happening on the page. You can pick out the one you need and fire your function/code on its success.

addition to url

I am developing my own template selector for CSS templates. At the moment, it works fine, clicking on a name from the selectbox changes the template. However there is 1 function that is missing.
If you look here: http://www.demo.joomforest.com/?template=corporate
you can obviously see the URL contains ?template=corporate at the end of it, thus if you enter that URL, it loads the corporate template.
This is my selector so far: http://joomjunk.co.uk/demo
As you can see, I added a hash + template name to the end of the url upon selecting a template, however if you copy and paste that URL into a new tab for example, it loads the default template.
So my question is, how can I add something similar to ?template=corporate and have it load the correct template upon loading that specific URL?
I'm not asking for the full code, but to point me in the right direction.
Thanks in advance.

window.location.search
This will contain whatever comes after the ? in your URL, including the ?
if
window.location.href === "http://www.demo.joomforest.com/?template=corporate"
then
window.location.search === "?template=corporate"
if you want to parse the query string, there are many resources available. If, however, you just want to do it for this specific case:
var tmpl = window.location.search.split('=')[1];
// tmpl === "corporate"
This will split the string on = and then return the second element in the array

If you have an URL like http://foo.bar/#corporate you can just check the window.location.hash in your javascript and load that template immediately.
Seems reasonable since you already add hashes in your dropdown – the user will see the same template if they choose to refresh the page.
You might even be able to trigger a click event on the right dropdown menu item based on the hash property, but that would require the DOM to be fully loaded.

Prefixing a URL in an window.open function jQuery

I have this HTML:
Track Your Package »
Somebody on this site was able to provide me with a script to prefix the URL with the domain http://www.example.com/ Here's the script:
$(document).ready(function(){
$('a[onclick^="window.open(\'TrackPackage.asp"]').attr('onClick', $('a[onclick^="window.open(\'TrackPackage.asp"]').attr('onClick').replace("window.open('", "window.open('http://www.example.com/"));
});
However, I am having a little trouble with this:
The first issue is where there is multiple instances of the element. Here's a fiddle: http://jsfiddle.net/VMmZx/
Instead of one anchor being signed with ID=4 and the other with ID=5 as intended, they're both being signed with ID=4.
The idea is, each window.open function should be prefixed with http://www.example.com however, the remainder of the URL should remain intact...
The second problem I'm encountering is when the element does not exist on a page, the remainder of the jQuery fails...
Here's another fiddle: http://jsfiddle.net/VPf32/
The <a> should get the class foo, but since the element does not exist on the page, the jQuery does not execute.
Since the JavaScript is being included in the HTML template of the ASP.NET server, this can create many problems.
I hope I've been clear and you can help me. Thanks.

You can use .each() to iterate over each matching element and change them individually:
$('a[onclick^="window.open(\'TrackPackage.asp"]').each(function(index, element) {
element = $(element);
element.attr('onclick', element.attr('onclick').replace(/open\('/, 'open(\'http://www.example.com/'));
});​
However, I don't think using links with a href of # and an onclick opening a window is as semantic as it could be. If possible, try changing the markup to this:
Track Your Package »
Now if someone is curious where it will lead them, the browser can show something useful in the status bar when you hover over it.
If you need to adjust the behavior further, add a class and bind for the click event. When they click, prevent the default action and open the window yourself, as you did before.

Why are you doing the click even inline like that? I would just output the links like:
Link Text
And then:
$('a[target=_blank]').click(function(){
var prefix = 'http://domain.com';
window.open(prefix + $(this).attr('href'));
});

How can I turn this click event function into one that is called automatically when the div loads?

I perform a function which loads content into a div. I am using innerHTML, I GET a php file, which updates the innerHTML of the div with the php file's content.
This div contains another div inside it with the class and id of "tweet". This div is updated with actual tweets of a specific hashtag, passed to the function through a $variable
It works fine when it is simply an onclick event, such as this:
<p>activity</p>
<div class="tweet" id="tweet"></div>
However, what I want to do is have it automatically load tweet('') once the "tweet" div has loaded.
The tweet(hashtag) function is:
function tweet(hashtag) { $("#tweet").load('tweet.php?hashtag='+hashtag); }
which loads a php file that calls the jquery tweet function.
jQuery(function($){
$(".tweet").tweet({
avatar_size: 32,
count: 3,
query: "<?echo $hashtag;?>",
loading_text: "loading tweets...",
refresh_interval: 3
});
});
Based on the hashtag passed, it shows 3 tweets.
The hashtag is called when the page is loaded, as a session variable.
It all works fine when I click the link. What do I need to do to have this load automatically. so that I don't need to click the link? I have tried a number of autorefresh options but couldn't quite get it. I would really appreciate assistance.
I know that, if this was just a regular page being loaded, I can simply use $(document).ready and call the jquery function. However, due to the way the div is populated with the new php file contents, it doesn't work. I have tried a few times using autorefresh intervals, window onload, etc. They don't seem to work either.

There are two ways to try this:
Run the code somehow from the function which you call to load the div. (Guaranteed to work. You may even put together some kind of plugin concept. "eval" may be useful.)
Add a tag after the div. If things work as you hope, that code will execute immediately.