css-injector-extension/injector.js
2025-10-20 22:20:56 +02:00

30 lines
669 B
JavaScript

function injectCSS(css) {
const styleId = "dynamic-css-injector-style";
let style = document.getElementById(styleId);
if (!style) {
style = document.createElement("style");
style.id = styleId;
document.documentElement.appendChild(style);
}
style.textContent = css;
}
function applySiteCSS() {
const domain = location.hostname;
chrome.storage.sync.get([domain], (result) => {
const css = result[domain];
if (css) injectCSS(css);
});
}
// Run when content script loads
applySiteCSS();
// Listen for background requests to reapply
chrome.runtime.onMessage.addListener((msg) => {
if (msg.type === "applyCSS") applySiteCSS();
});