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Open source

evaluate(pageFunction[, arg])

Returns the value of the pageFunction invocation. It passes this handle as the first argument to the pageFunction.

ParameterTypeDefaultsDescription
pageFunctionfunction or stringFunction to be evaluated.
argstring''Optional argument to pass to pageFunction.

Returns

TypeDescription
PromiseThe return value of pageFunction.

Example

JavaScript 
import { browser } from 'k6/browser';

export const options = {
  scenarios: {
    browser: {
      executor: 'shared-iterations',
      options: {
        browser: {
          type: 'chromium',
        },
      },
    },
  },
};

export default async function () {
  const page = await browser.newPage();

  try {
    await page.goto('https://test.k6.io/browser.php');
    const jsHandle = await page.evaluateHandle(() => document.body);

    const innerHTML = await jsHandle.evaluate((node) => node.innerHTML);
    console.log(innerHTML); // <p><a href="/">&lt; Back</a></p>...
  } finally {
    await page.close();
  }
}