I want to get the value of this

<input type="hidden" value="12345" name="InitiationTT">

But since it does not have an ID, I would like to retrieve the value by name. I first tried this:

const cii = await page.$("InitiationTT");
const init = await page.evaluate(el => el.getAttribute("value"), cii);

which did not work and threw TypeError: Cannot read properties of null (reading 'getAttribute'), so then I tried this:

const cii = page.evaluate(() => {document.querySelector("input[name=InitiationTT]").value});

which gave me Promise { <pending> } and so I finally tried this:

const cii = document.querySelector("input[name=InitiationTT]").value;

Which gave me ReferenceError: document is not defined so I am assuming that is because I am using NodeJS(?)

These 3 methods did not work and I do not know if Puppeteer has a way of getting a value of an element by it's name. Any help would be appreciated.