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For example i have a string hello check this out https://example.com?myparam=asd it is cool right?

and I want to get the https://example.com?myparam=asd part but the ?myparam=asd part can change like ?myparam=newerthing

Sorry if its a bit messy, I don't know how to describe it better.

TheClashFruit
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  • You need to try to explain this in more detail. As it currently stands it is not very clear what your higher level objective is – charlietfl Mar 23 '21 at 12:30

3 Answers3

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You could run your text through a regular expression that captures URL patterns. I just went with a popular one. There are a ton of URL patterns floating around on the web.

For each match, you can pass it to the URL constructor which then gets passed to an IIFE. Once you have the URL object, you can obtain information about the it such as origin and searchParams. The searchParams object should already be a URLSearchParams object, so you can take the entries() and pass them to Object.fromEntries to get a key-value pair object.

This is rudimentary at best, but it's a start.

// Via: https://stackoverflow.com/a/29288898/1762224
const URL_REGEX = /(?:(?:https?|ftp|file):\/\/|www\.|ftp\.)(?:\([-A-Z0-9+&@#\/%=~_|$?!:,.]*\)|[-A-Z0-9+&@#\/%=~_|$?!:,.])*(?:\([-A-Z0-9+&@#\/%=~_|$?!:,.]*\)|[A-Z0-9+&@#\/%=~_|$])/igm;

const extractUrls = text => text.match(URL_REGEX).map(matched => (url => ({
  url: url,
  origin: url.origin,
  searchParams: Object.fromEntries(url.searchParams.entries())
}))(new URL(matched)));

const urls = extractUrls("hello check this out https://example.com?myparam=asd it is cool right");

console.log(urls);
.as-console-wrapper { top: 0; max-height: 100% !important; }
Mr. Polywhirl
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Feel free to use URLSearchParams

You'll able to parse and get params keys and values.

Quick example:

const queryString = window.location.search;
const urlParams   = new URLSearchParams(queryString);

urlParams.get('myparam')
Rémi Delhaye
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I need more details, but maybe u need somethinng like this

const str = 'hello check this out https://example.com?myparam=asd it is cool right?'

const regExUrl = /(myparam=)[^ \&]+/
console.log(str.replace(regExUrl, '$1' + 'neverthing'))
Alex Chirkin
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