Here's a scenario: Page1.html and page2.html are identical, except a change of a single word.
page1.html
<html><head></head><body>
Lorem ipsum *one*
...Stuff here...
click me
...Stuff here...
</body></html>
page2.html
<html><head></head><body>
Lorem ipsum *two*
...Stuff here...
click me
...Stuff here...
</body></html>
As you can see, everything is identical in both pages except that in page2.html, *one* is swapped with *two*
Now, assume a visitor visits page1.html, and clicks on the a href link, will the browser re-render the entire DOM or simply detect the changed word and modify it?
This is obviously implementation specific, my interest is an answer for the major browsers (Chrome, Firefox, Opera, Safari, IE...)
Yes it will, unless you change your link click to a javascript that loads an inner HMTL dinamically. This is called Ajax.
I will surely load the entire page...A href requests basically reload the complete page..you can still load part of the page using Asynchronous javascript and xml... AJAX :)
It will attempt to reload the page.
If you want to stop the default action of reloading the page you could use event.preventDefault();.
More info here: http://api.jquery.com/event.preventdefault/]1
#Rodrigogq sums it pretty much up.
I would recommend using jQuery for replacing text.
$('body').text(function () {
return $(this).text().replace("one", "two");
});
This wouldn't use ajax but simply replace.
Can be modified to a button press.
If the URL is changed the browser loads the data from new address and needs to render it again – regardless of implementation of the browser. The difference between the HTML documents would be visible not earlier than when the new document would be loaded ant parsed into DOM which means that it gets rendered rather than finding the differences (which would be non-trivial task).
If you want to change only the content of particular element you need to use Javascript and set either static value or load it via AJAX.
To answer:
"As long as the bytes in the html page being downloaded match the bytes in the html page the user is currently seeing, do not re-render that part"
» Here is what it looks like in most browsers:
Step 1: Click on a link
Step 2: Get head response from the destination server (good if there is content-length included)
Step 3: If response is render-able (usually 200), Start unloading the already loaded DOM.
Step 4: Load the new content and render.
This prohibits any byte level comparison with the current and new request to identify the difference.
Related
I have a small web app which has <a href="> tag which renders the only runtime I mean it does not appear in HTML page it appears only in chrome developers tools. How to eliminate such kind a tag and override or edit it.
I tried editing code via its script when I inspected for long it split document.querySelector("#m360CrA483349594983") but when I search entire project there's no sign of it!
demos written can be eliminated for sure!
Even I tried to Enable Local Overrides on but nothing seems to work that mysterious tag is kept coming saying
"demos written can be eliminated for sure!"
once the dom is ready you can access the element
<script>
(function() {
// the DOM will be available here
document.getElementById("m360CrA483349594983");
})();
</script>
Add body onload event listener in order to search for tag appearing at runtime.
Also, pay attention to tag ID value, it seems it is generated every time, so, you won't be able to find it by static ID
How do I create a link to a part of long webpage on another website that I don't control?
I thought you could use a variant of the #partofpage at the end of my link. Any suggestions?
Just append a # followed by the ID of the <a> tag (or other HTML tag, like a <section>) that you're trying to get to. For example, if you are trying to link to the header in this HTML:
<p>This is some content.</p>
<h2><a id="target">Some Header</a></h2>
<p>This is some more content.</p>
You could use the link Link.
Create a "jump link" using the following format:
http://www.example.com/somepage#anchor
Where anchor is the id of the element you wish to link to on that page. Use browser development tools / view source to find the id of the element you wish to link to.
If the element doesn't have an id and you don't control that site then you can't do it.
That is only possible if that site has declared anchors in the page.
It is done by giving a tag a name or id attribute, so look for any of those close to where you want to link to.
And then the syntax would be
text
In case the target page is on the same domain (i.e. shares the same origin with your page) and you don't mind creation of new tabs (1), you can (ab)use some JavaScript:
see tenth paragraph on another page
Trivia:
var w = window.open('some URL of the same origin');
w.onload = function(){
// do whatever you want with `this.document`, like
this.document.querySelecotor('footer').scrollIntoView()
}
Working example of such 'exploit' you can try right now could be:
javascript:(function(url,sel,w,el){w=window.open(url);w.addEventListener('load',function(){w.setTimeout(function(){el=w.document.querySelector(sel);el.scrollIntoView();el.style.backgroundColor='red'},1000)})})('https://stackoverflow.com/questions/45014240/link-to-a-specific-spot-on-a-page-i-cant-edit','footer')
If you enter this into location bar (mind that Chrome removes javascript: prefix when pasted from clipboard) or make it a href value of any link on this page (using Developer Tools) and click it, you will get another (duplicate) SO question page scrolled to the footer and footer painted red. (Delay added as a workaround for ajax-loaded content pushing footer down after load.)
Notes
Tested in current Chrome and Firefox, generally should work since it is based on defined standard behaviour.
Cannot be illustrated in interactive snippet here at SO, because they are isolated from the page origin-wise.
MDN: Window.open()
(1) window.open(url,'_self') seems to be breaking the load event; basically makes the window.open behave like a normal a href="" click navigation; haven't researched more yet.
The upcoming Chrome "Scroll to text" feature is exactly what you are looking for....
https://github.com/bokand/ScrollToTextFragment
You basically add #targetText= at the end of the URL and the browser will scroll to the target text and highlight it after the page is loaded.
It is in the version of Chrome that is running on my desk, but currently it must be manually enabled. Presumably it will soon be enabled by default in the production Chrome builds and other browsers will follow, so OK to start adding to your links now and it will start working then.
Edit: It's been implemented in Chrome. See https://chromestatus.com/feature/4733392803332096
You can NOW...
As of Chrome release 81 (Feb 2020), there is a new feature called Text Fragments. It allows you to provide a link that opens at the precise text specified (with that text highlighted).
At the moment, it works in Edge, Chrome and Opera but not in Firefox, Safari or Brave. (See note 6 at bottom for more)
For security reasons, the feature requires links to be opened in a noopener context. Therefore, make sure to include rel="noopener" in your anchor markup or add noopener to your Window.open() list of window functionality features.
You create the link to your desired text by appending this string to the end of the URL:
/#:~:text=
and providing the percent-encoded search string thus:
/#:~:text=String%20to%20focus%20on
Here is a working example:
https://newz.icu/#:~:text=Google%20surveillance%20increases
Notes:
Test the above link in Chrome or Opera only
In the above example, note that the text string is in a div that is normally hidden on page load - so in this example it is being displayed despite what would normally happen. Useful.
Recent versions of Chrome also include a new option when you Right-Click on selected text: Copy link to highlight. This will auto-create the direct-to-text link for you (i.e. it automatically appends the /#:~:text= to the text you highlighted) and place it in the clipboard - just paste it where desired.
Suppose you want to highlight an entire block of text? The Text Fragments feature allows specifying a starting%20phrase and an ending%20phrase (separated by a comma), and it will highlight all text in between:
https://newz.icu/#:~:text=Dr.%20Mullis,before%20now
Note the comma between Mullis and before
web.dev article about Text Fragments
CanIUse status of Text Fragments
PS - Please forgive choice of example website. It simply had the desired
elements required for the demonstration. Hoping we can focus on function
rather than content.
First off target refers to the BlockID found in either HTML code or chromes developer tools that you are trying to link to. Each code is different and you will need to do some digging to find the ID you are trying to reference. It should look something like div class="page-container drawer-page-content" id"PageContainer"Note that this is the format for the whole referenced section, not an individual text or image. To do that you would need to find the same piece of code but relating to your target block. For example dv id="your-block-id" Anyways I was just reading over this thread and an idea came to my mind, if you are a Shopify user and want to do this it is pretty much the same thing as stated.
But instead of
> http://url.to.site.example/index.html#target
You would put
> http://example.com/target
For example, I am setting up a disclaimer page with links leading to a newsletter signup and shopping blocks on my home page so I insert https://mystore-classifier.com/#shopify-section-1528945200235 for my hyperlink.
Please note that the -classifier is for my internal use and doesn't apply to you. This is just so I can keep track of my stores.
If you want to link to something other than your homepage you would put
> http://mystore-classifier.example/pagename/#BlockID
I hope someone found this useful, if there is something wrong with my explanation please let me know as I am not an HTML programmer my language is C#!
It's now possible to create an "anchor" link that goes to a specific part of any webpage in most browsers in a few different ways.
All of them will create a link with an #anchor at the end, where "anchor" is the thing that you want to navigate to. The browser will interpret the part of the URL after the # to scroll to a specific part of the page.
Here are 3 ways to create a url like this:
Using an existing anchor. Perhaps there will be one in the URL as you scroll down the page. If not, look around the page for a header that has a little link icon to the left of it and click it to update the browsers navigation url.
Using any html element's id property or the name or id on an ("anchor") element. The other answers explain this quite well. You will have to open the developer console and inspect the part of the page to find an id (and you may not find one). It's a little different on each browser, but here's how to inspect an element in Chrome.
Using a text snippet to highlight part of the page.
Basically, html tag can have id="abc" as shown below:
<div id="abc">test</div>
<p id="abc">test</p>
<span id="abc">test</span>
<a id="abc">test</a>
And, "<a>" tag can also have name="abc" as shown below:
<a name="abc">test</a>
Then, you can use the id and name values "abc" with "#" in urls as shown below to go to the specific part of a page:
https://www.example.com/#abc
https://www.example.com/index.html#abc
Then, you can put the urls above in "<a>" tag to create the links to id="abc" and name="abc" as shown below:
test
test
And, if you want to go to the specific part of the same page, you can only put the id and name values "abc" with "#" in "<a>" tag to create the links to id="abc" and name="abc" as shown below:
<!-- Go to the specific part of the same page -->
test
<div id="abc">test</div>
<!-- Go to the specific part of the same page -->
test
<a name="abc">test</a>
How do I create a link to a part of long webpage on another website that I don't control?
I thought you could use a variant of the #partofpage at the end of my link. Any suggestions?
Just append a # followed by the ID of the <a> tag (or other HTML tag, like a <section>) that you're trying to get to. For example, if you are trying to link to the header in this HTML:
<p>This is some content.</p>
<h2><a id="target">Some Header</a></h2>
<p>This is some more content.</p>
You could use the link Link.
Create a "jump link" using the following format:
http://www.example.com/somepage#anchor
Where anchor is the id of the element you wish to link to on that page. Use browser development tools / view source to find the id of the element you wish to link to.
If the element doesn't have an id and you don't control that site then you can't do it.
That is only possible if that site has declared anchors in the page.
It is done by giving a tag a name or id attribute, so look for any of those close to where you want to link to.
And then the syntax would be
text
In case the target page is on the same domain (i.e. shares the same origin with your page) and you don't mind creation of new tabs (1), you can (ab)use some JavaScript:
see tenth paragraph on another page
Trivia:
var w = window.open('some URL of the same origin');
w.onload = function(){
// do whatever you want with `this.document`, like
this.document.querySelecotor('footer').scrollIntoView()
}
Working example of such 'exploit' you can try right now could be:
javascript:(function(url,sel,w,el){w=window.open(url);w.addEventListener('load',function(){w.setTimeout(function(){el=w.document.querySelector(sel);el.scrollIntoView();el.style.backgroundColor='red'},1000)})})('https://stackoverflow.com/questions/45014240/link-to-a-specific-spot-on-a-page-i-cant-edit','footer')
If you enter this into location bar (mind that Chrome removes javascript: prefix when pasted from clipboard) or make it a href value of any link on this page (using Developer Tools) and click it, you will get another (duplicate) SO question page scrolled to the footer and footer painted red. (Delay added as a workaround for ajax-loaded content pushing footer down after load.)
Notes
Tested in current Chrome and Firefox, generally should work since it is based on defined standard behaviour.
Cannot be illustrated in interactive snippet here at SO, because they are isolated from the page origin-wise.
MDN: Window.open()
(1) window.open(url,'_self') seems to be breaking the load event; basically makes the window.open behave like a normal a href="" click navigation; haven't researched more yet.
The upcoming Chrome "Scroll to text" feature is exactly what you are looking for....
https://github.com/bokand/ScrollToTextFragment
You basically add #targetText= at the end of the URL and the browser will scroll to the target text and highlight it after the page is loaded.
It is in the version of Chrome that is running on my desk, but currently it must be manually enabled. Presumably it will soon be enabled by default in the production Chrome builds and other browsers will follow, so OK to start adding to your links now and it will start working then.
Edit: It's been implemented in Chrome. See https://chromestatus.com/feature/4733392803332096
You can NOW...
As of Chrome release 81 (Feb 2020), there is a new feature called Text Fragments. It allows you to provide a link that opens at the precise text specified (with that text highlighted).
At the moment, it works in Edge, Chrome and Opera but not in Firefox, Safari or Brave. (See note 6 at bottom for more)
For security reasons, the feature requires links to be opened in a noopener context. Therefore, make sure to include rel="noopener" in your anchor markup or add noopener to your Window.open() list of window functionality features.
You create the link to your desired text by appending this string to the end of the URL:
/#:~:text=
and providing the percent-encoded search string thus:
/#:~:text=String%20to%20focus%20on
Here is a working example:
https://newz.icu/#:~:text=Google%20surveillance%20increases
Notes:
Test the above link in Chrome or Opera only
In the above example, note that the text string is in a div that is normally hidden on page load - so in this example it is being displayed despite what would normally happen. Useful.
Recent versions of Chrome also include a new option when you Right-Click on selected text: Copy link to highlight. This will auto-create the direct-to-text link for you (i.e. it automatically appends the /#:~:text= to the text you highlighted) and place it in the clipboard - just paste it where desired.
Suppose you want to highlight an entire block of text? The Text Fragments feature allows specifying a starting%20phrase and an ending%20phrase (separated by a comma), and it will highlight all text in between:
https://newz.icu/#:~:text=Dr.%20Mullis,before%20now
Note the comma between Mullis and before
web.dev article about Text Fragments
CanIUse status of Text Fragments
PS - Please forgive choice of example website. It simply had the desired
elements required for the demonstration. Hoping we can focus on function
rather than content.
First off target refers to the BlockID found in either HTML code or chromes developer tools that you are trying to link to. Each code is different and you will need to do some digging to find the ID you are trying to reference. It should look something like div class="page-container drawer-page-content" id"PageContainer"Note that this is the format for the whole referenced section, not an individual text or image. To do that you would need to find the same piece of code but relating to your target block. For example dv id="your-block-id" Anyways I was just reading over this thread and an idea came to my mind, if you are a Shopify user and want to do this it is pretty much the same thing as stated.
But instead of
> http://url.to.site.example/index.html#target
You would put
> http://example.com/target
For example, I am setting up a disclaimer page with links leading to a newsletter signup and shopping blocks on my home page so I insert https://mystore-classifier.com/#shopify-section-1528945200235 for my hyperlink.
Please note that the -classifier is for my internal use and doesn't apply to you. This is just so I can keep track of my stores.
If you want to link to something other than your homepage you would put
> http://mystore-classifier.example/pagename/#BlockID
I hope someone found this useful, if there is something wrong with my explanation please let me know as I am not an HTML programmer my language is C#!
It's now possible to create an "anchor" link that goes to a specific part of any webpage in most browsers in a few different ways.
All of them will create a link with an #anchor at the end, where "anchor" is the thing that you want to navigate to. The browser will interpret the part of the URL after the # to scroll to a specific part of the page.
Here are 3 ways to create a url like this:
Using an existing anchor. Perhaps there will be one in the URL as you scroll down the page. If not, look around the page for a header that has a little link icon to the left of it and click it to update the browsers navigation url.
Using any html element's id property or the name or id on an ("anchor") element. The other answers explain this quite well. You will have to open the developer console and inspect the part of the page to find an id (and you may not find one). It's a little different on each browser, but here's how to inspect an element in Chrome.
Using a text snippet to highlight part of the page.
Basically, html tag can have id="abc" as shown below:
<div id="abc">test</div>
<p id="abc">test</p>
<span id="abc">test</span>
<a id="abc">test</a>
And, "<a>" tag can also have name="abc" as shown below:
<a name="abc">test</a>
Then, you can use the id and name values "abc" with "#" in urls as shown below to go to the specific part of a page:
https://www.example.com/#abc
https://www.example.com/index.html#abc
Then, you can put the urls above in "<a>" tag to create the links to id="abc" and name="abc" as shown below:
test
test
And, if you want to go to the specific part of the same page, you can only put the id and name values "abc" with "#" in "<a>" tag to create the links to id="abc" and name="abc" as shown below:
<!-- Go to the specific part of the same page -->
test
<div id="abc">test</div>
<!-- Go to the specific part of the same page -->
test
<a name="abc">test</a>
Is there a way to bookmark or link to an HTML page (which I am not author of) without having an anchor in the HTML code?
I want the page to get scrolled down to a particular section when accessed from a bookmark or hyperlink even if there is no anchor tag in the destination page.
Note: the destination page has an anchor tag as "foo" then bookmarking like http:/...hello.html#foo will not only take the user to hello.html, but also automatically scroll down to the section of the page so that the anchor tag "foo" is at the top of the screen.
It's the year 2020, there is a draft by WICG for Text Fragments, and now you can link to text on a page as if you were searching for it by adding the following to the hash
#:~:text=<Text To Link to>
Working example on Chrome Version 81.0.4044.138:
Click on this link Should take you to another answer page and highlight the link there
You only need to have the appropriate id attribute on an element to use it like a bookmark...
Test
...
<p id="test">Hello world</p>
See the W3C specification: Anchors with the id attribute
Older specifications also allowed navigation based on the name attribute, but this attribute has been removed from the latest HTML specifications (but if there is a name attribute it may be used in the same way as an id attribute).
If there is no id or name attribute where you wish to navigate to, there is no way of navigating to the specific point within the page, only to the page itself. In this case you may want to quote the pertinent information and supply a citation with a link or perhaps ask the author if they would add an id.
This is a copy of #AbderrahmaneTAHRIJOUTI's answer but updated with some extra info.
It's the year 2020, and now there is a draft by WICG for Text Fragments, and now you can link to text on a page as if you were searching for it by adding the percent-encoded quote to the URL like this:
#:~:text=<percent-encoded-text-quoted-from-site>
For example, this link highlights the syntax from the spec.
One can also highlight multiple sections as well by chaining query parameters with ampersand (&):
#:~:text=<quote-1>&text=<quote-2>
For example, see these highlights to the spec.
Even ranges can be set in case of a longer quote (at least in Chrome):
#:~:text=<begin-text>,<end-text>
For example, highlighting an entire paragraph in the spec.
For some reason, in Chrome 89.0.4389.90 the above links may only work if one (1) clicks on them, (2) goes to the address bar by clicking in it or by F6, and (3) hits Enter. Not sure why this is when Google search constantly offers links like this in the results which work out of the box (e.g., a link to Azure Vault)
Support
It's still spotty, but most major browsers support it (except for Firefox...). To check the current status of adoption, check out https://caniuse.com/?search=%3A~%3A
There is a relatively recent W3C Working Group Note on Selectors and States which would allow linking to selected text.
Here is a Firefox webextension partially implementing the link format (allowing you to "create" a link, based on the selection, as well as, obviously, open such a link, highlighting the correct selection):
https://addons.mozilla.org/en-US/firefox/addon/precise-links/
As of 2019 it seems to work fine.
Its source code is available here.
The Firefox extension "Web Marker" does exactly what you want.
https://addons.mozilla.org/en-US/firefox/addon/web-marker/
You can find its source code and documentation here:
http://liveurls.mozdev.org/tech.html
If the page supports being embedded as an iframe, you can link to a document that embedds it and then autoscrolls the document. The issue is that we can't get the height of the page, so instead we just hijack the scrolling event to make the page taller once we approach the bottom:
data:text/html,<html><body style="margin:0; padding:0;"><iframe id='i' src='http://forecast.weather.gov/MapClick.php?CityName=Las+Vegas&state=NV&site=VEF&textField1=36.175&textField2=-115.136&e=0' width=100% frameborder=0 margin=0 scrolling=no style="height: calc(100vh + 170px + 200px);"></iframe></body><script>window.scrollTo(0, 170);window.onscroll = function(e) {if((window.innerHeight + window.scrollY) >= document.body.offsetHeight - 200) {document.getElementById('i').style.height = window.innerHeight + window.scrollY + 200;}};</script></html>
Modern browsers will try to scroll to an element with an ID that matches the hash part of the URL (i.e. if you have <h1 id="foo">, then #foo would get you there).
If everything else fails, you can use jQuery. Get the hash part from the document URL with window.location.hash. You can then interpret that in JavaScript to determine an element in the page.
Use scrollTop to move there (see Scroll to an element with jQuery).
See also: https://api.jquery.com/scrolltop/
I must be not getting something, but sadly your solution is not working for me... The attached document's jargon confuses me a bit as the dilettant I am. :-(
Though, it gave a nice clue... Hence, I found this link with a simpler way to do this (in my case, link to a specific part of a text in some other author's blog post without ID tags):
Share or link to quotes and text in Chrome
https://support.google.com/chrome/answer/10256233?hl=en-GB&co=GENIE.Platform%3DDesktop
To create a link that opens directly to highlighted text:
On your computer, open Chrome.
Go to a page with text that you want to share.
To highlight the text that you want to share, click and hold, then drag your mouse.
To open the context menu, right-click on the highlighted text.
Select Copy link to highlight.
If you can’t select this option, this feature may not work for the selected content.
Paste the link anywhere; for example, into an email or message thread.
Tip: To remove the highlight from the text in the linked content, right-click the highlighted text and select Remove highlight.
If you want to link to a specific part of a PDF file online, this solution also worked for me:
https://helpx.adobe.com/acrobat/kb/link-html-pdf-page-acrobat.html#:~:text=Open%20a%20PDF%20file%20to,end%20of%20the%20link's%20URL.
Just posting this in case someone is still lost as I was.
Cheers!
The AnchorMe addon from Firefox just solved this for me. Ctrl + double click on your desired destination and voilà.
Here's the use case: A user clicks on a link that opens a window displaying the contents of a text log. Easy enough. But is there a way of using POST, to open that text log to a certain location (i.e., search for a particular timestamp given in the post, and show the file at that specific location)?
(Assume I can't put html tags inside the text log -- it's a raw file).
Template of log:
+++ 2009/06/19 10:47:12.264 ACTION +++
+++ 2009/06/19 10:49:12.111 ACTION +++
So I want the page to load a specific timestamp.
Thanks,
Michael
Why can't you just have a php or perl or simlar script that processes the log file on the spot, and sticks in html anchors and calls it a day?
Doing on the spot processing would also allow you display a trimmed down copy of the log thats only relevant to the timespan around the event in question.
Since you can't modify the file, the only way would be to wrap it in a <frame> or an <iframe> and drive the searching and scrolling from JavaScript in the neighbouring/containing page.
Here's an example, which you can try out online at http://entrian.com/so-container.html
<html><head><script>
function go() {
// "line" is the <input> for which line to jump to; see the HTML.
var line = document.getElementById('line').value;
if (document.body.createTextRange) { // This is IE
var range = frames['log'].document.body.createTextRange();
if (range.findText(line)) {
range.select(); // Scroll the match into view and highlight it.
}
} else { // Non-IE. Tested in Firefox; YMMV on other browsers.
frames['log'].find(line); // Scroll the match into view and highlight it.
}
}
</script></head><body>
<input type='text' size='5' name='line' id='line' value='10'>
<button onclick='go()'>Go</button><br>
<iframe name='log' width='100' height='50' src='so-data.txt'>
<!-- so-data.txt contains the numbers 01-20 on separate lines -->
</body></html>
I've tested that in IE7 and FF3; I'd be surprised if it worked elsewhere without edits, but you never know your luck!
Obviously in your case you'd be driving the scrolling programmatically rather than via an <input> box, but you can see how it would work for you.
If you could put some tags around the file's text, then you could probably insert some javascript that would scroll the window after loading it.
Yes, but passing your parameters via a querystring would be a whole lot simpler.
To scroll to a certain position in the text file you will need to user javascript (overly complicated in my opinion) or add an html anchor tag.
If you were planning to post the raw text log in a window, you will also run into some difficulty as HTML will not recognize the newlines and run the log together into one blob.
have you tried
window.open ('log.txt');
window.scrollTo (0, window.scrollMaxY);
? From mozilla reference : https://developer.mozilla.org/en/DOM/window.scrollMaxY
Keep a 'living copy' of the log file that has been translated to HTML - every time the original file is modified (or simply every X seconds), check for and append the newest lines with HTML anchors applied to the HTML version.
A new feature was added to Chromium waaaaay back in 2020 that allows you to link to ANY location on any webpage.
At the time of this writing, it works for sure in Chrome and Opera but not yet in Firefox, Safari or Brave browser.
The trick is to add:
/#:~:text=
and follow the equal sign with the desired search text, replacing any spaces with %20. Example:
There is no ID near this location on the page
<div>IMPORTANT: Use Opera or Chrome to open above link</div>
For more information:
Linking to a specific part of a web page