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This is documentation for the next version of K6. For the latest stable release, go to the latest version.

DocumentationGrafana k6JavaScript APIk6/browserRequestheaderValue(name)
Open source

headerValue(name)

Returns the value of the header matching the name. The name is case insensitive.

Returns

TypeDescription
Promise<string | null>A promise that resolves to the value of the header matching the name, otherwise null.

Example

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

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

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

  try {
    const res = await page.goto('https://test.k6.io/');
    const req = res.request();

    const headerValue = await req.headerValue('accept-language');
    console.log(`headerValue: ${headerValue}`); // headerValue: en-US
  } finally {
    await page.close();
  }
}