I am trying to setup a form which grabs the hash from the url, then uses that value to determine what radio inputs to check. The latter part is working, but i cannot get the hash retrieval to work.
var url = document.referrer;
var dec= decodeURIComponent(url.replace(/\+/g, '%20'));
var hash = url.substring(url.indexOf('?')+1);
var hash = decodeURI(hash);
In firefox console, i try 'console.log(hash)', and simply get a Reference Error saying that 'hash is not defined'.
The entire script is here if needed - http://pastebin.com/Yq9NbHyz
Because hash is not global variable. Use window.location.hash or location.hash
Related
I have some parameters in url that are added when coming to a specific page, so correct page is opened. For example:
https://example.com/index.php?cCode=SFI=&cmpn=cHJvdmlkaW8=
Now, when i get to that page, i want to remove them, so they don't get passed further, but still want to keep any additional parameters, like source=facebook or whatever... I found a way to remove them with this code:
var urlParts = url.split('?');
var params = new URLSearchParams(urlParts[1]);
params.delete('cCode');
params.delete('cmpn');
var newUrl = urlParts[0] + '?' + params.toString();
history.pushState(null, null, newUrl);
But they still get forwarded when i click on a some link... Any way to do this, with js or even php?
I would recommend using the URL object instead of the url string.
let url = new URL(window.location.href);
url.searchParams.delete('cCode');
url.searchParams.delete('cmpn');
window.history.pushState({}, document.title, url);
Be advised, the URL object is not supported on IE.
Refer to this url polyfill for IE compatability.
https://www.npmjs.com/package/url-polyfill
Well, on my site I have a FAQ where users can access specific questions through the URL, such that:
https://example.com/faq#question-1
And for this I use Jquery, such that:
if (window.location.hash) {
$(window.location.hash).open();
}
But I want that if the user enters more than one hash in the URL such that:
https://example.com/faq#question-1#question-2#question-3#question-n
All hashes are removed from the URL except the first #question-1
How can I do this?
Edit:
if user type https://example.com/faq#question-1#question-2#question-3#question-n then change the url to https://example.com/faq#question-1 so that only the first hash appears in the url and the FAQ only has to read a single hash.
It could something as simple as
var hash = window.location.hash;
var filtered_hash = '';
if(hash.length > 0){
filtered_hash = '#' + hash.split("#")[1];
window.location.hash = filtered_hash;
}
console.log(filtered_hash);
This should work for you
var str="https://example.com/faq#question-1#question-2#question-3#question-n";
var trimmedStr = str.split("#").slice(0,2).join("#");
console.log(trimmedStr);
This removes all hashes after the first hash.
You can use something like -
location.hash = '#'+location.hash.split('#')[1]
I need to find the way to keep the parameters in the url upon navigation if they are entered once, ie: ?aff=john
So for example, user comes to website.com/?aff=john and navigates to about-us I need to make that url parameters are kept, so the full website name is: website.com/about-us/?aff=john
This is what I've tried so far, but it is not working.. it keeps adding the url parameters (window.location.search)
var params = false
var baseUrl = ''
var currUrl = window.location.href
if (window.location.search != '') {
params = true
}
if (params) {
baseUrl = currUrl + window.location.search
window.location.href = baseUrl
}
Thanks.
EDIT: already tried proposed.. not working.
You can use sessionStorage to save navigation data into a key. Pick it up whenever required. Now-a-days, all browsers support it except Opera mini.
Hopefully, your software does not have browser constraints and your application does not have to work on outdated browsers.
As copied from mozilla site, code to use sessionstorage would be like :
// Save data to sessionStorage
sessionStorage.setItem('key', 'value');
// Get saved data from sessionStorage
var data = sessionStorage.getItem('key');
// Remove a key from sessionStorage
sessionStorage.removeItem('key');
// Remove all data from sessionStorage
sessionStorage.clear();
This way, you won't need to append it on every page. For the domain url and in current browser session, you can get it from sessionStorage.
You can save the query string using window.location.search and then you can add link handler in using jQuery like below:
var glString = window.location.search;
$('a').on('click', function(evt) {
evt.preventDefault();
window.location = $(this).attr('href') + glString;
});
or if you prefer javascript
var glString = window.location.search;
var links = document.getElementByTagName('a');
links.addEventListener('click', function(evt) {
evt.preventDefault();
window.location = $(this).attr('href') + glString;
});
You can temporary save the previous url using sessionStorage.
sessionStorage.setItem('parameter', 'dataString');
sessionStorage.getItem("parameter");
I have an example url - http://localhost:4000/something&test#test.com&true
I need to hide everything after http://localhost:4000/something
I have the following code:
var locationHref = window.location.href;
var splitLocationHref = locationHref.split('&')[0];
Is it possible to just hide &test#test.com&true from the URL, without breaking the functionality that that part of the URL provides?
No, the browser won't let you do this for security reasons. You'll need to change the page so that these values aren't passed in through the querystring
Is there a way to update the URL programatically without reloading the page?
EDIT: I added something in the title in post .I just want to make it clear that I don't want to reload the page
Yes and no. All the common web browsers has a security measure to prevent that. The goal is to prevent people from creating replicas of websites, change the URL to make it look correct, and then be able to trick people and get their info.
However, some HTML5 compatible web browsers has implemented an History API that can be used for something similar to what you want:
if (history.pushState) {
var newurl = window.location.protocol + "//" + window.location.host + window.location.pathname + '?myNewUrlQuery=1';
window.history.pushState({path:newurl},'',newurl);
}
I tested, and it worked fine. It does not reload the page, but it only allows you to change the URL query. You would not be able to change the protocol or the host values.
For more information:
http://diveintohtml5.info/history.html
https://developer.mozilla.org/en-US/docs/Web/Guide/API/DOM/Manipulating_the_browser_history
Yes - document.location = "http://my.new.url.com"
You can also retrieve it the same way eg.
var myURL = document.location;
document.location = myURL + "?a=parameter";
The location object has a number of useful properties too:
hash Returns the anchor portion of a URL
host Returns the hostname and port of a URL
hostname Returns the hostname of a URL
href Returns the entire URL
pathname Returns the path name of a URL
port Returns the port number the server uses for a URL
protocol Returns the protocol of a URL
search Returns the query portion of a URL
EDIT:
Setting the hash of the document.location shouldn't reload the page, just alter where on the page the focus is. So updating to #myId will scroll to the element with id="myId". If the id doesn't exist I believe nothing will happen? (Need to confirm on various browsers though)
EDIT2: To make it clear, not just in a comment:
You can't update the whole URL with javascript without changing the page, this is a security restriction. Otherwise you could click on a link to a random page, crafted to look like gmail, and instantly change the URL to www.gmail.com and steal people's login details.
You can change the part after the domain on some browsers to cope with AJAX style things, but that's already been linked to by Osiris. What's more, you probably shouldn't do this, even if you could. The URL tells the user where he/she is on your site. If you change it without changing the page contents, it's becomes a little confusing.
You can use :
window.history.pushState('obj', 'newtitle', newUrlWithQueryString)
Use
window.history.replaceState({}, document.title, updatedUri);
To update Url without reloading the page
var url = window.location.href;
var urlParts = url.split('?');
if (urlParts.length > 0) {
var baseUrl = urlParts[0];
var queryString = urlParts[1];
//update queryString in here...I have added a new string at the end in this example
var updatedQueryString = queryString + 'this_is_the_new_url'
var updatedUri = baseUrl + '?' + updatedQueryString;
window.history.replaceState({}, document.title, updatedUri);
}
To remove Query string without reloading the page
var url = window.location.href;
if (url.indexOf("?") > 0) {
var updatedUri = url.substring(0, url.indexOf("?"));
window.history.replaceState({}, document.title, updatedUri);
}
Define a new URL object, assign it the current url, append your parameter(s) to that URL object and finally push it to your browsers state.
var url = new URL(window.location.href);
//var url = new URL(window.location.origin + window.location.pathname) <- flush existing parameters
url.searchParams.append("order", orderId);
window.history.pushState(null, null, url);
Yes
document.location is the normal way.
However document.location is effectively the same as window.location, except for window.location is a bit more supported in older browsers so may be the prefferable choice.
Check out this thread on SO for more info:
What's the difference between window.location and document.location in JavaScript?
Prefix URL changes with a hashtag to avoid a redirect.
This redirects
location.href += '&test='true';
This doesn't redirect
location.href += '#&test='true';
Plain javascript: document.location = 'http://www.google.com';
This will cause a browser refresh though - consider using hashes if you're in need of having the URL updated to implement some kind of browsing history without reloading the page. You might want to look into jQuery.hashchange if this is the case.
You'll need to be more specific. What do you mean by 'update the URL'? It could mean automatically navigating to a different page, which is certainly possible.
If you want to just update the contents of the address bar without reloading the page, see Modify the URL without reloading the page
Yes - document.location.hash for queries