document.body.style.border = "5px solid red"; const filePath = "newpipe_subscriptions_202403101004.json"; var localURL = browser.extension.getURL(filePath); var w=[]; fetch(localURL) .then((res) => { if(!res.ok){ throw new Error (`res error`); } return res.json(); }) .then((data) => { for(let i=0;i<3;i++) //i in data.subscriptions) { let open=null; console.log(data.subscriptions[i].url); try{ open = alert(data.subscriptions[i].url,"_blank"); } catch(e) {InsertError(e.description);} } }) .catch((error)=> console.error("couldnt fetch data",error));