button click: open a new browser tab and call a function

I recommend using query strings . After retrieving the data in the AJAX callback, urlencode it and append it to the route's link.

$.ajax({
    url : 'example.com',
    type: 'GET',
    success : (response) => {
        window.open(
            'http://example.com/my-target-route' + '?content=' + encodeURIComponent(response.data) + '#my-div-container',
            '',
            ''
        )
    }
})

On the target page, parse the query parameters as follows:

let urlParams = new URLSearchParams(window.location.search);
let myDiv = document.querySelector('#my-div-container');

myDiv.innerHTML = urlParams.get('content');

Alternatively, you can try running the method from a new tab stored locally .