Scrapper script for downloading CSS and JS files from any website.

css-and-js-scrapper.js

// Go to your desired website. Just paste the below whole script to browser console. Hit enter & see the magic!!!

(function () {

    let currentUrl;
    let currentUrlBase;
    let filePath;
    let fileName;
    let fileUrl;
    let scrapperPopup;
    let scrapperContainer;
    let outputContent;

    // Element filtering function
    function filterElement(elementTitle, tagName, fileExtension) {

        let contentList = document.createElement('ul');
        contentList.classList.add('scrapper-list');
        contentList.setAttribute('style', 'margin: 0 auto 50px; padding: 0; list-style: none;');
        contentList.innerHTML = `<h2 style="margin: 0 auto 10px; font-size: 20px; line-height: 24px;">Scrapped External ${elementTitle}s:</h2>`;

        externalElements = document.querySelectorAll(tagName);
        externalElements.forEach(externaElement => {
            entireElement = externaElement.outerHTML;
            if (!entireElement.includes(fileExtension)) { return }

            entireElementSplitted = entireElement.split('"');
            entireElementSplitted.forEach(elementPart => {
                if (elementPart.includes(fileExtension)) {
                    filePath = elementPart;

                    if (filePath.includes('?')) {
                        filePath = filePath.substring(0, filePath.indexOf('?'));
                    }

                    fileName = filePath.split('/').pop();

                    if (filePath.includes('http')) {
                        fileUrl = filePath;
                    } else {
                        fileUrl = `${currentUrlBase}/${filePath}`;
                    }
                    // console.log(filePath);
                    // console.log(fileName);
                    // console.log(fileUrl);

                    outputContent = `<li class="scrapper-item" style="border: solid 1px #dbe2e8; box-shadow: 0 0 15px 0 rgba(0, 0, 0, 0.1); margin-bottom: 1em; padding: 20px 25px; box-sizing: border-box; display: flex; flex-direction: row; flex-wrap: nowrap; justify-content: space-between; align-items: center;">
                                            <div class="scrapper-content">
                                                <h3 style="margin: 0 auto 10px; font-size: 20px; line-height: 24px;">${fileName}</h3>
                                                <a style="display: inline-block; font-size: 14px; line-height: 16px; margin-bottom: 5px; text-decoration: none;" href="${fileUrl}" target="_blank">${fileUrl}</a>
                                            </div>
                                            <a class="scrapper-button" style="background: #ddd; padding: 15px 40px; border-radius: 5px; font-size: 16px; line-height: 20px; text-decoration: none; border: solid 1px #ccc; box-shadow: 0 0 15px 0 rgba(0, 0, 0, 0.1); box-sizing: border-box;" href="${fileUrl}" target="_blank" download="">Download</a>
                                        </li>`;

                    contentList.insertAdjacentHTML('beforeend', outputContent);

                }
            });

        });
        scrapperContainer.insertAdjacentElement('beforeend', contentList);
        document.body.insertAdjacentElement('beforeend', scrapperPopup);
    }

    currentUrl = location.href;
    let currentUrlSplitted = currentUrl.split('/');
    if (currentUrlSplitted[currentUrlSplitted.length - 1].includes('.')) { currentUrlSplitted.pop() };
    currentUrlBase = currentUrlSplitted.join('/');

    scrapperPopup = document.createElement('div');
    scrapperPopup.id = 'scrapper-popup';

    scrapperPopup.innerHTML = `<div id="scrapper-container" style="width: 90%; max-width: 1170px; display: block; box-sizing: border-box; margin: 50px auto; padding: 50px; background: #eee; border-radius: 3px;">
                                    <h1 style="text-align: center; font-size: 30px; margin-bottom: 30px;">External Resource Scrapper by <a
    href="https://github.com/devAsadNur">Asad Nur</a></h1>
                                </div>`;

    scrapperContainer = scrapperPopup.querySelector('#scrapper-container');

    document.body.setAttribute('style', 'position: relative !important; overflow-x: hidden;');
    scrapperPopup.setAttribute('style', 'position: absolute; top: 0; left: 0; z-index: 99999; width: 100%; height: 100%; min-width: 100vw; min-height: 100vh; overflow-x: hidden; background: rgba(0,0,0,0.8);');


    filterElement('Stylesheet', 'link', '.css');
    filterElement('Script', 'script', '.js');

})();