store staggered output from chrome console into single variable and copy it

Below is the code to scrape data from a particular site using tag and id name:

document.querySelectorAll("div #menu a").forEach((item)=>(fetch(item.href).then(res => res.text()).then(data => console.log(data))));

Here menu is id name of div tag of anchor tag, item returns all the filtered anchor tags that i want to store locally.

I want to return the output in single var "data" but the output i am getting is in staggered manner like one url entirely then its showing to copy that code and then next same thing for another url and so on