10 replies

Env Vars in Worker

Hi, I am having an issue using an environment variable in my Worker code. I have set the environment variable in my Worker's dashboard, and am trying to access it in my Worker JS code, but it won't work. When I console log the env var it either shows up as 'Null' or 'Cannot read properties of undefined'.

I have tried to simplify my code to see if I can pinpoint the issue, but am not sure what I'm doing wrong. Is it necessary to use a Wrangler file, or am I implementing it incorrectly?

addEventListener('fetch', event => {
    event.respondWith(handleRequest(event));
  });
  
  async function handleRequest(event) {
    const { env } = event;
    
    // Access the environment variable
    const myEnvVar = env.MAILCHIMP_API_KEY;
  
    // Log the environment variable
    console.log(

addEventListener('fetch', event => {
    event.respondWith(handleRequest(event));
  });
  
  async function handleRequest(event) {
    const { env } = event;
    
    // Access the environment variable
    const myEnvVar = env.MAILCHIMP_API_KEY;
  
    // Log the environment variable
    console.log(

MY_ENV_VAR: ${myEnvVar}

);
  
    // Respond with a simple message
    return new Response(

);
  
    // Respond with a simple message
    return new Response(

Environment variable MAILCHIMP_API_KEY: ${myEnvVar}

, {
      headers: { 'Content-Type': 'text/plain' },
    });
  }

, {
      headers: { 'Content-Type': 'text/plain' },
    });
  }

Env Vars in Worker

addEventListener('fetch', event => {
    event.respondWith(handleRequest(event));
  });
  
  async function handleRequest(event) {
    const { env } = event;
    
    // Access the environment variable
    const myEnvVar = env.MAILCHIMP_API_KEY;
  
    // Log the environment variable
    console.log(

addEventListener('fetch', event => {
    event.respondWith(handleRequest(event));
  });
  
  async function handleRequest(event) {
    const { env } = event;
    
    // Access the environment variable
    const myEnvVar = env.MAILCHIMP_API_KEY;
  
    // Log the environment variable
    console.log(

MY_ENV_VAR: ${myEnvVar}

);
  
    // Respond with a simple message
    return new Response(

);
  
    // Respond with a simple message
    return new Response(

Environment variable MAILCHIMP_API_KEY: ${myEnvVar}

, {
      headers: { 'Content-Type': 'text/plain' },
    });
  }

, {
      headers: { 'Content-Type': 'text/plain' },
    });
  }

Env Vars in Worker

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