How to make a parser for a site on JS / jQuery?

Question

JavaScript

Given:
A list of categories and subcategories that I got from the main menu using JS. The list is placed in the targetURL array.

Required:
Write a parser that will take the url from the array by index, go to the page, parse all links to products on this page, save the data to another array or object.

Parsing is carried out through the console.

var targetURL = [
'http:// example.ua /g17995855-diagnosticheskoe-meditsinskoe-oborudovanie',
'http:// example.ua /g399157-laboratornoe-oborudovanie'
];
$.ajax({
url:targetURL[0],
success: function(){
console.log('Success!!!');
window.location.href = targetURL[0];
$(function(){
console. log( "ready!" );
var items = $('.b-product-groups-gallery__item .b-product-groups-gallery__title-wrapper a');
});
},
error: function() {
console.log('Error');
}
});

Answer 1

Yes, parsing is done through the backend. I did it in php. First I got the page via CURL. Then I parsed using simplehtldom - a small library, very convenient and simple.
A little about CURL. It's just to make a request. You're opening pages from a computer. It happens like this: your computer makes a request to the server using the browser, it sends you the html code, and the browser simply displays it.

$ch = curl_init();  
curl_setopt($ch, CURLOPT_URL, 'http://forum.antichat.ru/'); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
$result = curl_exec($ch); 
curl_close($ch);

Above is an example of the simplest CURL, if it is connected, then $result should contain a long line with the html code of the page. It has many settings, you can set different headers, request types, etc.
When parsing, you select all links and then check the href attribute.

Answer 2

php dom parser to help, library is fine. simplehtmldom.sourceforge.net