Selenium WebDriver Java: Change DOM before DOMContentLoaded

Question

My aim is to change the DOM of a page before the DOMContentLoaded event. Let's say my JS would look like the code below and I want to change a value of an element:

document.addEventListener("DOMContentLoaded", function(event) {
  console.log("Value of element foo: " + document.getElementById('foo').value);
});

I know to change the DOM with the JavascriptExecutor of Selenium WebDriver, but I'm missing how to get it to to execute right before 'DOMContentLoaded' (and maybe that's not the right approach).

// some hook or whatever to execute right before 'DOMContentLoaded' or wherever suitable
((JavascriptExecutor) webDriver).executeScript("document.getElementById('foo').value='hi there'");

Answer 1

In order to do that you will have to set the pageLoadStrategy from default normal to none.
This will pass the control to the next code line immediately after launching the page with driver.get() method without waiting for the page content to be loaded.