Getting value of input element in Playwright

inputValue method has been added in Playwright v1.13.0

await page.inputValue('input#my-input');

Locator:

await page.locator('input#my-input').inputValue();

It returns input.value for the selected <input> or <textarea> element. Throws for non-input elements. Read more.

The easiest way is to use $eval. Here you see a small example:

const playwright = require("playwright");

(async () => {
  const browser = await playwright.chromium.launch();
  const context = await browser.newContext();
  const page = await context.newPage();
  await page.setContent(`<input id="foo"/>`);
  await page.type("#foo", "New value")
  console.log(await page.$eval("#foo", el => el.value))
  await page.screenshot({ path: `example.png` });
  await browser.close();
})();

From version 1.19 (and probably lower versions) Element Handler is not recomended. Instead of it use Locator.

page.locator(selector).innerText()

in your case with assertion it will be

expect(page.locator("input#my-input").innerText().includes("1")).toBeTruthy()

Read more on: https://playwright.dev/docs/api/class-elementhandle#element-handle-fill