how to link something from a popup of a google extension code example

Example 1: chrome extension open new tab from popup

document.addEventListener('DOMContentLoaded', () => {
   var y = document.getElementById("index_link");
   y.addEventListener("click", openIndex);
});

function openIndex() {
 chrome.tabs.create({active: true, url: "http://my_url"});
}

Example 2: chrome extension open new tab from popup

<a id="index_link">My text</a>.