We Keep Coding

How to track a user coming from a certain URL to trigger a function using JavaScript

I am wanting to trigger a function that will display all events but only when the user comes from a URL with /events/ in it.
Right now I am using referrer to take the user back to the page and to scroll to the last event they clicked on. But if the event they clicked on has to be loaded by clicking 'view more' it will just scroll to the bottom of the page. I need all the events to collapse when the user hits the return button.
Any help is much appreciated!

You can achieve what you're trying to do with localStorage:
if(!!localStorage.getItem("isEventsInPath")) {
// user came from /events
}
var isEventsInPath = document.location.pathname.includes("/events/");
localStorage.setItem("isEventsInPath", isEventsInPath);
// keep the order intact!

You can use the following to parse the URL and call your function:
$(document).ready(function(){
if(document.location.pathname.includes("/events"))
{
//CALL YOUR FUNCTION
}
});
This parses the path name and checks if /events exists in it.

Trying to get this wordpress theme to scroll to an id when a link is clicked on a different page

Easiest way to explain it is if you have a look at the site - haloespresso.com.au/working/
If you click the "menu" option in the top menu, it scrolls to the menu id #pg-9-4, which is what I want. On the other pages, the menu is slightly different and the same link is changed to link to the home page with #pg-9-4 added to the end of it. The point here is clearly to get the link from another page to open the home page but scroll to the menu part of it. I don't even need it to smooth scroll or anything, just go to that spot. It looks like it does go there for like, one frame, as it's loading, but it keeps jumping to the top. It's simply beyond me to try and figure out what is causing it to lose this basic HTML (afaik) functionality and keep forcing me to the top of the page...
Any help would be really great, as I'm a bit of a noob when it comes to anything other than html/css and simple jquery.

Just append the anchor to the end of the link.
Simply insert a link like:
Link to section on another page
Edit: Just noticed you're not getting this to work. What do your links look like, and what's the HTML with the ID on the target page?

Try this jQuery code:
$(document).ready(function() {
function hashScroll() {
// get URL Hash
var hash = window.location.hash;
// check if hash is set and not empty
if (hash != '') {
// scroll to hash ID after 10ms delay
setTimeout(function() {
$(document).scrollTop( $(hash).offset().top );
}, 10);
// debugging
console.log(hash);
console.log('offset:'+ $(hash).offset().top );
}
}
hashScroll(); // fire hash scroll function
});
Explanation:
This function will capture the URL hash (www.example.com/#hash), checks if it's not empty and then scrolls the page to the element with the ID which matches the hash after 10 ms. The delay is there to make sure browsers don't mess up the loading process.

Loading a page from hash on refresh

So I wrote this piece of JavaScript using the JQuery library. Its functionality is to have the pages load inside of a div instead of an entire page (to make modifying the layout way easier).
I've made it so it successfully saves the 'file URL' in the hash and I've made it so it loads correctly, but I can't for the life of me figure out how to go to that page.
When I try to go to a page with the hash in the name (so for example refreshing a page, or going through a link/URL) it replicates itself (I think) two times inside each other. You can see it happening live at overeten.be and then try to refresh a random page except the main one.
Could someone help me with this problem? Thanks in advance!
$("document").ready(function(){
$('._body').load("pages/default.html");
var locationhash = window.location.hash.replace('#','');
if ((locationhash=='pages/default.html')||(locationhash=='')){
console.log("no page, "+locationhash);
} else{
$('._body').load(window.location.hash);
console.log(locationhash);
}
$('.menubundle a, footer a').on('click', function (e) {
e.preventDefault();
var page = $(this).attr('href');
$('._body').fadeOut(1000,function(){
document.location.hash = page;
$('._body').load(page).fadeIn(1000);
});
});
});

The problem is on this line:
$('._body').load(window.location.hash);
If you inspect window.location.hash, you get this:
window.location.hash
"#pages/over_eten/feit.html"
That URL points to the current page. What you really want is this:
window.location.hash.slice(1) // Skip the first character
"pages/over_eten/feit.html"
On a side note, it seems weird to me that you have two calls to $('._body').load(). The first one seems like it belongs right above console.log('No page...') instead.

reactjs return to same segment of page

I have a long page built in reactjs (SPA). It has many links. When user scrolls down and clicks one of these links, new page gets rendered.
All is good but when users hits back button (browser), previous long page gets re-rendered and goes back to top.
Is there any easy solution to make sure used goes to exactly same segment of page where he last clicked?

I would register a click event on each link and preventDefault behavior or use other elements like a span with a click event.
after this you need to store the scrollhight, like here
myclick: function() {
var node = this.getDOMNode();
node.scrollTop = node.scrollHeight;
//navigate to your new site , update location
},
store your scrollTop in a state or local storage and when the user hits the back button, you need to check if scrollTop is set and update the scrollposition back to this node.
May have a look at this or this. But i think there is no easy solution.
Maybe some of this links are helpful: Link 1 , Link 2
React-Router

Popstate with Hashtags?

I have a site that uses AJAX to dynamically load content into a div.
The links to do so are anchors with href="#" and an onclick event to trigger the AJAX.
This leaves me without a history when I click back, so if I load one page, then another and click back, it does nothing.
A basic version of the code is this:
<script type="text/javascript">
function loadXMLDoc(url)
{
<!-- Load XML Script here. -->
}
</script>
</head>
<body>
<div id="myDiv">
<!-- Target div. -->
</div>
Click Me.
Click Me.
Click Me.
</body>
What I would like to know is, can I give each link a different "#" and then use a popstate handler to call the appropriate event, so if I click link 1, 2 and then 3 and then start hitting the back button, it'll go back to 2 and then 1 etc..
I was going to use history.js and start using pushstate in the loadXML script but I think the whole manipulating history thing is a bit dirty and unreliable.
Am I thinking on the right lines or is there a better way?
Currently all my links just use "#" so that it pops back to the top of the page when loading more content but I'd like to be able to go back if possible.
Any help would be great.

Browser saves hashtags to history properly. Just add hashtag #1 to this question page, hit enter, change it to #2, hit enter, change it to #3, hit enter. Now click back button, and you'll see hash changes from #3 to #2. I recommend to change only hash itself on link click and react on page hash change and page load events.
function react() {
var hash = window.location.hash.replace("#", "");
loadXMLDoc(hash + ".txt");
};
document.body.onload = function() {
react();
window.onhashchange = react;
};
Click me
Click me
Click me
Please note that onhashchange event does not supported by old IE. The only way to deal with it if you want is to define timer with setInterval and check hashes equality.

Try to use combination of LocalStorage and HistoryAPI.
When you load XMLDoc store it in LocatStorage, when back is pressed - load data from storage, not from web.
A bit code above.
/* Handling history.back added */
window.onpopstate = function(event) {
yourHandleBackFunction(event.state);
};
function yourHandleBackFunction(renderTs) {
/*Check TS and load from localStorage if needed*/
};