Javascript & HTML Getting the Current URL - javascript

Can anyone help me. I don't use Client-side Javascript often with HTML.
I would like to grab the current url (but only a specific directory) and place the results between a link.
So if the url is /fare/pass/index.html
I want the HTML to be pass

This is a quick and dirty way to do that:
//splits the document.location.href property into an array
var loc_array=document.location.href.split('/');
//have firebug? try a console.log(loc_array);
//this selects the next-to-last member of the array.
var directory=loc[loc.length-2]

url = window.location.href // Not particularly necessary, but may help your readability
url.match('/fare/(.*)/index.html')[1] // would return "pass"

There may be an easier answer, but the simplest thing I can think of is just to get the current URL with window.location and use some type of parsing to get which directory you are looking for.
Then, you can dynamically append the HTML to your page.

This may get you started:
var linkElement = document.getElementById("whatever");
linkElement.innerHTML = document.URL.replace(/^(?:https?:\/\/.*?)?\/.*?\/(.*?)\/.*?$/i,"$1");

Related

How to find a dynamic node class by pattern in JavaScript

I'm working on this WP plugin and I've been trying to get the ID of a custom post kinda thing that is declared in the body class on each page. So it goes like this;
<body class="(Bunch of other classes) ld-courses-1731-parent">
I'm trying to get the number 1731 in my JS function but the number is dynamic so I need to some regex matching with the string pattern.
Pattern: ld-courses-*INT VALUE*-parent
how can I do this with JS? Any help is much appreciated thank you so much.
You can use match if thats the only class in your body:
var classList = document.getElementsByTagName("body")[0].classList;
[...classList].forEach(function(thisClass) {
if (/ld-courses-\b/.test(thisClass)) {
var id = thisClass.match(/\d/g);
console.log(id.join(""));
}
});
<body class="another-class-before another-class-12-hasnum ld-courses-1731-parent another-class-12-hasnumaswell another-class-after">
</body>
Hi Laclogan in regards to your question yes it's possible for sure.
Correct me if i'm wrong but the number comes probably if it's changing for each post directly from the url.
The following site explains if this is the case how to get that number from the url.
https://www.sitepoint.com/get-url-parameters-with-javascript/
In addition you can use the function concat to combine the strings see this site for an example hope it helps.
https://www.w3schools.com/jsref/jsref_concat_string.asp
Could you confirm for me that the number is always present in the url or if this is not the case?

extracting id from url user input in javascript

i would like to extract part of a url and not sure what is the best practice for going about that. the url input format would be like: https://somesite.com/video/123456 i would like to extract the video id which is 123456so i can use at another place. any thoughts or suggestion would be appreciated. I am not sure how to use a split or if using regex would be better.
If your URL format is consitent just use the following
var url = "https://somesite.com/video/123456";
var id = url.split("/")[4]

Passing variables to Javascript from "pretty" URL

My problem is, I would like to create "pretty" URLs for visitors that look like this:
http://domain.com/Name
I have users that often send friends to my service, and I have been created customized pages for each one with the person's First Name in the headline. E.g., "John, here's an easy way to fix this widget"
I then save the page as an index.html file in a custom folder so the link structure for the custom page is domain/Name with Name being their First Name.
This is getting tedious and I would love to use Javascript to automate the process. However, the only documentation I can find on passing variables to Javascript involves "ugly" domains such as domain/jspass2.html?FirstName=John&LastName=Smith
Is there a way to beautify these domains and still pass the variables to a javascript code that inputs their name into the html code? I don't want to "cloak" an ugly domain (using a href, for example)
Thanks for the help!
Well, you could make it "prettier" by making the querystring cleaner.
example:
http://www.domain.com/?John,Smith
The javascript in your index file can read that.
var getQueryString = function() {
queryString = window.location.search;
queryStringCleaned = queryString.substring(queryString.indexOf('?') + 1 );
return queryStringCleaned;
};
if "http://domain.com/Name" is your domain, variable firstName will have the value "Name".
var firstName = window.location.pathname.match(/([\w-]+)\/?.*/)[1];
You could just take the whole URL in JS, and parse it "by hand". Use this regex (for example) to find the parameters passed.
In addition to Paul, I wrote you something that extracts the first name field from the url you provided. If the format is consistent, and you can obtain the url in javascript, you can use this. You may possibly have to create the page first, then redirect the user because javascript is a client side language and the page will already be rendered.
var url = "domain/jspass2.html?FirstName=John&LastName=Smith";
url = url.slice(url.indexOf("FirstName=") + 10, url.length);
url = url.slice(0, url.indexOf("&"));

Use URL Parameter to call a line of text using JS?

I'm hoping to call a line of text by using a simple URL parameter. Say I had an ordered list in javascript and on load of url example.com/?i=14 would get the 14th line in my list and place it where desired.
How can I achieve this?
I'm not sure what you mean by "call a line of text," but maybe you could do this:
var url = window.location.href;
var queryPos = url.indexOf('i=');
var param = url.substr(queryPos + 'i='.length);
Now param will contain the value of the parameter and you could use it to fetch whatever.
But since you're trying to access a value from a URL with JavaScript, it might be better to make use of # as explained here: How do I get the value after hash (#) from a URL using jquery (there are non-jquery answers as well)
Hopefully this is what you need.
To place an array element where you need it on document load
<div id="placeHere"></div>
In JS
document.body.onload = function(){
document.getElementById('placeHere').innerHTML = array[14];
}
jQuery
$(document).ready(function(){
$('#placeHere').html(array[14]);
})

JavaScript, get url body in a variable

I know it is an easy one, sorry for asking, but I’m going mad and I cannot get it. Must be the fundamentals, I’ve got them all mix up :((
I have this url:
https://www.myweb.sub.com/~user/folder/file.php?param=Value
I need to get:
https://www.myweb.sub.com/~user/folder/
in a variable.
Please help to achieve it.
Thanks a lot
You can use the slice() and lastIndexOf() methods:
var url = "https://www.myweb.sub.com/~user/folder/file.php?param=Value";
var segment = url.slice(0, url.lastIndexOf("/") + 1);
If your current URL is actually https://www.myweb.sub.com/~user/folder/file.php?param=Value, operate on window.location.href instead.
So we don't chew it all up for you, here's a link that should set you on the right path:
find the last index of a character with this: http://www.w3schools.com/jsref/jsref_lastindexof.asp
get the substring of a string with this:
http://www.w3schools.com/jsref/jsref_substring.asp
Tell us if you still need help after that.
use this :-
var str="https://www.myweb.sub.com/~user/folder/file.php?param=Value";
var n=str.substring(0,str.indexOf("file"));

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