使用 javascript / node.js 将值从一个 function 传递到另一个 class function

Question

I am trying to pass value from one page function to another Class function but its not working as expectation

detail.js

const {UserData} = require("./userData");

let commonfield="Asia Origin";

var userData= new UserData();
userData.start(commonField);

userData.js

class UserData extends Commands{
 async start(field){
  console.log(field);
 }
}

Here You can see I tried to pass the value but its not passing the value from detail.js to userData.js class function

Answer 1

You are calling the wrong function and remove curly braces from userData :

const UserData = require("./userData");

let commonfield="Asia Origin";

var userData= new UserData();

try {
   const result = await userData.start(commonField); // should be start
} 
catch(e) {
   console.log(e);
}

class UserData extends Commands{
 async start(field){
  console.log(field);
  return field;
 }
}

As, start is an async function to get its value you need to use await.

You are not exporting the class, you need to do it in order to access it:

class UserData extends Commands{
 async start(field){
  console.log(field);
 }
}

export {UserData};