I have a problem with ajax requests, which forces me to use javascript linking. I link this way:
window.location.href = ('file:///android_asset/www/custom/kontakty.html');
I would like to know is it possible to set transition/animation when such link is clicked.
Not reliably, no..
If you are running a script until the browser changes location.. chances are that with most browsers the script would get killed once it established a connection.
What you could probably do is request the page via ajax and replace the body tag or whole page in the success handler, where you could also stop/finish your animation.
Related
I have a page that is not on the same domain and I want to be able to hide the header and footer when it is loaded in another specific site.
Can this be done using iframe-resizer? I have used it before and it works great but never tried cross communication and think that I will hit a security issue.
I was hoping that I could call postMessage to a JS function on the child page to hide the elements.
Yep I think that using postMessage would work, although you might get a bit of a flash, as it wouldn't be sent until the iFrame had loaded.
You could also look at usings something like if (window.location !== top.location) {...}.
Suppose that we have a website called example.com
In this website we have a single button which when clicked runs a javascript function let's say myFunction()
Is it possible to create an http request from the url bar of firefox so that when this http request is finished, the button would be clicked as well?
For instance, it would be good if I could include this url to the url bar of my browser
example.com + javascript:myFunction()
which would run the function after loading the page without having me to click on the button
however this does not work for me.
thank you in advance
Nope, that's not possible.
You can't append JS in a url. You can however use JS instead of a url, so javascript:myFunction()
You can use window.onload:
window.onload = function() {
myFunction();
}
as soon as the URL has loaded myFunction will execute, but unless some kind of bad server side logic is used, you can not tell a page to execute some arbitrary JavaScript after it has loaded without the page knowing of it.
i have a page on which there an event handler attached to an onclick event. when the event fires it passes contents of a textbox to a GET request. since the url is not in the same domain so i create a script tag and and attach the url to its source like this
elem.onclick=fire;
function fire()
{
var text=document.getElementById('text').value;
var script=document.createElement("script");
script.className="temp";
script.src="some url"+"?param="+text;
document.body.appendChild(script);
}
now if that event is fired and more than one time i want to cancel all the previous GET request(because they still might be receiving response) and make the GET request with latest text. But for this i need to cancel the previous requests.
i tried
document.body.removeChild(script);
script.src=null;
but this does not work in Firefox(i am using Firefox 5) although this works in Google Chrome.Does anyone know if these requests can be cancelled in Firefox and if yes then how?
UPDATE
As suggested by Alfred, i used window.stop to cancel a request but does not cancel a request but hangs it up. It means that when i look into firebug it looks like the request is being made but there is no response.
The solution is simple: for creating HTTP requests, use <img> instead of <script> element. Also you always have to change the src attribute of the same element.
var img;
function fire()
{
var text = document.getElementById('text').value;
var im = img || (img = new Image());
im.src = "url"+"?param="+text;
}
You may ascertain that it actually works by doing the following: the URL you request should have a huge response time (you can ensure this using e.g. PHP's sleep function). Then, open Net tab in Firebug. If you click the button multiple times, you'll see that all incomplete requests are aborted.
This is entirely shooting from the hip, but if the script tag has not finished loading you can probably simply script.parentElement.removeChild( script ). That is more or less what mootools does anyway. (Technically, they replace /\s+/ with ' ' first, but that does not seem to be terribly important).
Would it be ok for you to use a JS framework? If so, MooTools has this functionality built into its Request.JSONP object
I'm not sure if this is what you're looking for, but it seems like a similar issue:
http://www.velocityreviews.com/forums/t506018-how-to-cancel-http-request-from-javascript.html
To get around the cross-domain issue, you might be able to use CORS instead (assuming you can change what's on the server):
http://hacks.mozilla.org/2009/07/cross-site-xmlhttprequest-with-cors/
If you do this, you could then use the more standard XMLHttpRequest's abort() function.
CORS is compatible with all the major modern browsers except Opera (http://caniuse.com/cors).
<script>
function test() {
alert("this should only be called after the browser is fully redirected?");
}
window.location = "http://google.com";
test();
</script>
I'm about redirecting the user guys to a page and I want to do something (call a function) only after the browser is fully redirected but I can't get it to work. Is there any way for me to do so?
Is there any way for me to do so?
Nope. When the page has opened google.com, you no longer have any control over the browser window.
Once URL changes, all execution of the current page is stopped.
Not really. You'd have to put the page you were redirecting in a frame and keep the script in another frame, then watch for the content frame to get updated. But you'd also run into cross-domain issues because of the Same Origin Policy (which governs access to one document's contents [the new page] from another document [the one containing the script you're running]). So basically, you can't do this.
If you post a separate question saying what you're trying to achieve by running more code afterward, it may be that people can help you with alternative approaches.
i don't believe this would work. it's a form of XSS/injection and therefore a security risk. i don't think the W3C allowed this sort of thing because it's very dangerous. as soon as the user is loading a different page, the browser ignores the previous one.
http://www.coderanch.com/t/439675/HTML-JavaScript/Javascript-call-AFTER-redirect
see that guy's answer for a visual
Ok, so all the rage these days is having a site like this:
mysite.com/
mysite.com/about
mysite.com/contact
But then if the user has Javascript enabled, then to have them browse those pages with Ajax:
mysite.com/#/
mysite.com/#/about
mysite.com/#/contact
That's all well and good. I have that all working perfectly well.
My question is, if the user arrives at "mysite.com/about", I want to automatically redirect them to "mysite.com/#/about" immediately if they have Javascript.
I have it working so if they arrive at "mysite.com/about", that page will load fine on its own (no redirects) and then all clicks after that load via ajax, but the pre-fragment URL doens't change. e.g. if they arrive on "mysite.com/about" and then click "contact", the new URL will be "mysite.com/about#/contact". I really don't like that though, it's very ugly.
The only way I can think of to automatically redirect a user arriving at "mysite.com/about" to "mysite.com/#/about" is to have some javascript in the header that is ONLY run if the page is NOT being loaded via ajax. That code looks like this ($ = jQuery):
$(function(){
if( !location.hash || location.hash.substr(1,1) != '/' ) {
location.replace( location.protocol+'//'+location.hostname+'/#'+location.pathname+location.search );
}
});
That technically works, but it causes some very strange behavior. For example, normally when you "view source" for a page that has some ajax content, that ajax content will not be in the source because you're viewing the original page's source. Well, when I view source after redirecting like this, then the code I see is ONLY the code that was loaded via Ajax - I've never seen anything like that before. This happens in both Firefox 3.6 and Chrome 6.0. I haven't verified it with other browsers yet but the fact that two browsers using completely different engines exhibit the same behavior indicates I am doing something bad (e.g. not just a bug with FF or Chrome).
So somehow the browser thinks the page I'm on "is" the Ajax page. I can continue to browse around and it works fine, but if I e.g. close Firefox and re-open it (and it re-opens the pages I was on), it only reloads the Ajax fragment of the page, and not the whole wrapper, until I do a manual refresh. (Chrome doesn't do this though, only Firefox). I've never seen anything like that.
I've tried using setTimeout so it does not do the redirect until after the page has fully loaded, but the same thing happens. Basically, as far as I can tell, this only works if the fragment is put there as the result of a user action (click), and not automatically.
So my question is - what's the best way to automatically redirect a Javascript capable browser from a "normal" URL to an Ajax URL? Anyone have experience doing this? I know there are sites that do this - e.g., http://rdio.com (a music site). No weirdness happens there, but I can't figure out how they're doing it.
Thanks for any advice.
This behavior is like the new twitter. If you type the URL:
http://twitter.com/dinizz
You will be redirected to:
http://twitter.com/#!/dinizz
I realize that this is done, not with javascript but in the server side. I am looking for a solution to implements this using ruby on rails.
Although I suggest you to take a look on this article: Making AJAX Applications Crawlable