invoke lambda nodejs

To invoke a Lambda function using Node.js, you can follow these steps:

1. Install the AWS SDK for JavaScript by running the following command in your Node.js project directory:

npm install aws-sdk

1. Create an instance of the AWS.Lambda class and specify the region where your Lambda function is deployed, like this:

const AWS = require('aws-sdk');
const lambda = new AWS.Lambda({region: 'your-region'});

1. Define the parameters for invoking the Lambda function, including the function name and payload:

const params = {
  FunctionName: 'your-function-name',
  Payload: JSON.stringify({key: 'value'})
};

1. Invoke the Lambda function using the invoke method and handle the response:

lambda.invoke(params, function(err, data) {
  if (err) console.log(err, err.stack);
  else console.log(data);
});

By following these steps, you can successfully invoke a Lambda function using Node.js and handle the response accordingly.