chrome.tabs.query({active: true, currentWindow: true},function(tabs){ var currentTab = tabs[0]; });
document.addEventListener('DOMContentLoaded', () => { var y = document.getElementById("index_link"); y.addEventListener("click", openIndex); }); function openIndex() { chrome.tabs.create({active: true, url: "http://my_url"}); }
<a id="index_link">My text</a>.