How to set a Javascript timer to delay prefetch?

Question

I am using prefetch/prerender on an HTML page.

<link rel="prefetch" href="example.com" />

I want to delay this action using JS.

Answer 1

Maybe try using setTimeout and document.write. Tested in chrome and it loads the site after 2s (saw in network panel)

window.setTimeout(function() {
    document.write("<link rel='prefetch' href='http://www.google.de' />")
    }
    ,2000
);