How to access value in JS file stored using PHP function

Question

I'm building a custom plugin for a chatbot in WordPress, where I've written some logic in a JS file to get the API and responses. As request body I am sending two parameters. One of the parameters is stored in the wp database using a PHP function (my core plugin file). So I want to access that function/that value in my JS file so I can send it in the API request.

JS function -

fetch('https://whatgpt.up.railway.app/api/query-train-gpt', {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        query: userMessage,
        number: phoneNumber,

      }),
    })

Backend PHP functions -

function get_admin_phone_number()
{
  // Retrieve the stored admin phone number from the database.
  $admin_phone_number = get_option('admin_phone_number', ''); // Provide a default value if the option is not set.

  // Return the admin phone number.
  return $admin_phone_number;
}

Answer 1

You can set the output value of the function to $_SESSION['admin_phone_no'] and then use the value from the session in your JS file.