i'm trying things out with a html document's dom (under visualbasic6) and i was wondering:
how can i get the full html sourcecode including all headers?
is there something like document.all.value?
thanks
If all you have is a DOM, there is no way to retrieve the original source, much less the response headers. It's gone. The DOM is what was generated from the source, which was thrown away thereafter.
If you must have the original source and headers, you will have to fetch it again from the server, using the location object to get the URL. For example from inside a web page script:
var req= 'XMLHttpRequest' in window? new XMLHttpRequest() : new ActiveXObject('MSXML2.XMLHttpRequest');
req.onreadystatechange= function() {
if (this.readyState===4) {
alert('Headers: '+this.getAllResponseHeaders());
alert('Body: '+this.responseText);
}
};
req.open('get', location.href);
req.send(null);
Clearly this will only work for a page generated from a GET request.
Related
I am currently developing a website that will dynamically load the page content using ajax triggered by hash changes.
The code looks like this
$("*").delegate("a", "click", function () {
// Trigger Hash Change
window.location.hash = $(this).attr("href");
return false;
});
$(window).bind('hashchange', function () {
let newHash = window.location.hash.substring(1);
$("#main-content").load(newHash + " #ajax-content", function (responseTxt, statusTxt, xhr) {
}).hide().fadeIn();
});
Basically what I am working on now is making the URL look "Pretty", I have modified the .htaccess file to remove the .html extension
So a URL that looks like this
www.example.com/about.html
will become this
www.example.com/about
If I navigate the index (home) "www.example.com" page of the website and then navigate from there to the about page, the URL looks fine. "www.example.com#about" since the server does not display the "index" in the URL.
However, if I navigate straight to the about page like this www.example.com/about, then from the about page to another page, for example, the contact page. I get a URL that looks like this www.example.com/about#contact. When it should look like this www.example.com#contact.
My question is what is the best way to handle this? should I use jquery to redirect all to the index page and then add the hash to load the correct content? or is there some way I can not display the unnecessary part of the URL?
I hope my question was clear, I'm new to the server-side stuff involving the .htaccess file. FOr the ajax stuff I was following this tutorial from CSS tricks
https://css-tricks.com/video-screencasts/85-best-practices-dynamic-content/
You can use history.pushState
window.history.pushState("object or string", "Title", "/new-url");
The url will be www.example.com/new-url
in fact you can get history.state after use this method.
console.log(window.history.state)
output should be "object or string"
You can see the docs here.
Remember to use / to override the entire path.
To do what i think that you want, you can just override the url to / and set the hash.
This is probably not the best way to do this, but I have managed to redirect any page to the home page and then replace the / with the hash value so that the site wont end up wit "messy" URLs.
if(window.location.pathname != "/home.html")
{
window.location.replace("home.html" + window.location.pathname.replace("/", "#"));
}
what happens id the user navigates to "*www.example.com/about*" they will actually be sent to the homepage with the #about.html. So the never end up like this "*www.example.com/about#about*"
I need to set some headers when getting an image. The img src attribute does not allow this, so I'm using an XHR request to get the image. However, when I set the src attribute on the img tag after that request completes, it looks like the request is triggered again. Is there a way to cache the image and not trigger the second request?
Sample Code:
$(document).ready(function() {
var url = 'https://i.imgur.com/bTaDhpy.jpg'
var file = $.get(url);
file.then(function(data) {
$('#foo').attr('src', url);
});
});
JS Fiddle: https://jsfiddle.net/mehulkar/o4Lcs5Lo/
Note: my question is not about how to set the appropriate headers in the xhr request. My question is how to not trigger another GET from the setting of the src attribute and use the response from the XHR to display the image.
Use the $.ajax for this:
var myImg = $('#foo'),
mySrc = 'https://i.imgur.com/bTaDhpy.jpg';
$.ajax({
url: mySrc,
type: "GET",
headers: {
"X-TOKEN": 'xxxxx'
}
}).done(function() {
myImg.attr('src', mySrc); // set the image source
}).fail(function() {
myImg.hide(); // or something other
});
I cannot comment here due to reputation points, but here is what I've found on this.
I have a local html page that I'm executing via file:///
I can use a $.get to dynamically pull svg files into a variable. The debugger shows this as if it were a standard html node <svg. (I'm using Firefox Developer, but also in Firebug I see the svg file as a node.).
So At this point I have an empty <img that I want to set to my svg file I just don't know how to set the src attribute to the actual document itself. I suppose I could encode to base64.. You might be able to set it using the debugger itself. I couldn't get this to work reliably. Another avenue (for me since I'm using svg) is to clone the object then write it node for node. If you're not using svg perhaps there is some similar hack you could conduct with canvas? Load the image as a sprite then read the colors and set pixels?
Dumb question time. I was trying to integrate my JSON data with a flipbook plugin, using a Mustache templating system. Needless to say, this wasn't working at all.
I'm a jQuery noobie, so is there any easy way to bind and animate the JSON data to/with a plugin (with or without the Mustache tags)??
From your question it is a bit hard to deduce what you want, but I feel you got already all the pieces together. First the example you have been linking to in a comment: https://github.com/blasten/turn.js/wiki/Making-pages-dynamically-with-Ajax
This fetches not yet loaded pages via Ajax, and the sample code assumes the Ajax call gets HTML back from the server, as can be seen in the code snippet from there (after adding a missing '}':
$.ajax({url: "app?method=get-page-content&page="+page})
.done(function(data) {
element.html(data);
});
Here the done function processes the data it got back from the server by straight injecting it into the element, which is expected to contain the current page.
I assume next that you do have a server side method, but that method returns JSON instead. Let me assume for the moment that it returns the following structure:
{ "title" : "the title of page N",
"text" : "here is some text for the page N." }
The next thing is to render this JSON into into html in the done funktion, before inserting the result into the page. Looking at the short tutorial on the README.md this might look like:
$.ajax({url: "app?method=get-page-content&page="+page})
.done(function(data) {
var pageHtml = Mustache.render("<h2>{{title}}</h2><p>{{text}}</p>", data);
element.html(pageHtml);
});
If the server returns the proper data you should now see a
<h2>the title of page N</h2><p>here is some text for the page N.</p>
appear on the page.
I've been working on a custom CMS in drupal for about two or three weeks now, and I keep running into this same problem. I'm trying to load a dynamically generated url (by extracting the node id of the target drupal page into $resultCut and appending it to the baseurl of the website). This iframe is embedded next to an instance of CKEditor, and the idea is to have the content in the iframe change when the fields in CKEditor are modified. I have the following Jquery:
<script type="text/javascript">
$(document).ready(function(){
baseurl = urlhere;
url = baseurl+"<?php echo $resultCut ?>"
$('#EmuFrame').attr('src', url);
var HTML = $('#EmuFrame').contents().find('body').html();
alert ( "LOADING COMPLETE" + HTML );
});
$('#edit-field-mobile-page-header-label-0-value').change(function () { // writes changes to the header text to emulaor
var curr = $(this).val();
$('#EmuFrame').contents().find("h1").text(curr);
});
$('#edit-body').keyup(function(e) { // writes changes to the body text to emulator
var curr = $(this).val();
currhead = $('#EmuFrame').contents().find("h1").html();
$('#EmuFrame').contents().find('#content').html("<h1>"+currhead+"</h1>"+curr);
});
where #EmuFrame is the id of an iframe, and the #edit-* tags are the ids of fields in CKEditor that I am monitoring for change. When the user types, the keyup() or change() events is supposed to grab the new html and swap it with the html in the iframe.
As of right now, the LOADING COMPLETE alert fires, but there is no html in the alert. I noticed that the content of the iframe loads AFTER the alert fires, however, which is what led me to believe that it's a problem with the order in which the events trigger.
Further, I had an alert in the callback function of keyup that returned the new html [ alert(curr) ] that was generated when a user started typing, and this alert returns html (although, it is being grabbed from CKEditor). However, the iframe does not reflect any changes. If I append [ alert (currhead) ] though, nothing is alerted at all.
It might be of interest to note that the source url is technically on a different domain than the parent. however, I used a workaround (i'm pretty sure it works, because I've previously gotten the whole html replacement thing working, and then somehow it broke). Also, neither Firebug nor Chrome's console report any XMLHttpRequest errors. Also, I keep getting this error: "Uncaught Syntax error, unrecognized expression: [#disabled]" and I'm not sure what it means, and whether its relevant to my problem as stated above.
That was a ridiculously long plea for help, so THANKS FOR READING, and thank you for any help!!
Your note about about the cross-domain iframe src is worrisome -- you shouldn't be able to access its contents with javascript. Nevertheless:
You have these two lines in quick succession:
$('#EmuFrame').attr('src', url);
var HTML = $('#EmuFrame').contents().find('body').html();
Try waiting for the iframe to load first:
$('#EmuFrame').load(function() {
var HTML = $('#EmuFrame').contents().find('body').html();
}
So I am planning on dynamically changing a page's content by fetching it from another page.
To do so, I used Mootools' Request class:
var tabContent = new Request({
url: 'foo/bar/baz.php',
onSuccess: function(data) {
$('tab_container').innerHTML = data;
}
}).send();
In any case, the HTML is fetched fine, and returns without a hitch. However, I'd like to add some events to THOSE fetched elements (Fx.slide, to be precise), and that requires some js to be included in the requested file.
Upon inspection of the returned data, the javascript is intact. However, it does not show up in the final product. That is, somewhere in between having received the data, and rendering the data (via the innerHTML bit) it seems as though the javascript has been excised out for some reason.
Hm.
add evalScripts: true to the Request options, then include the script in a simple <script></script> block at the bottom of the response.