JSFiddle - React, Tailwind, and code Playground

by Allendar

JavaScript

//This will actually fetch the categoryID you want:

var href = window.location.href;
var regex = href.match(/categoryID=(\d+)/g);

if (regex != null) {
    if (regex.length > 0) {
        var catID = regex[0].replace('categoryID=', '') * 1;
        
        console.log(catID);
        
        if (catID == 308) {
            document.getElementById('website').innerHTML = '<p>This is the Apartments Category page</p>';
        }
        else {
            document.getElementById('website').innerHTML = '';
        }
    }
    else {
        console.log('ID couldn\'t be found! :(');
    }
}
else {
    console.log('ID couldn\'t be found! :(');
}

//You can do whatever you want with it afterwards. It's safer than to check the whole URL.

//Good luck on your learning endeavors :)