Forum Discussion

royd's avatar
royd
Regular Contributor
7 years ago

Global variable troubles (Calling Variables Declared in Another Unit) in javascript

I have successfully used "//USEUNIT" method of calling functions and variables in the past.  I am trying to use "module.exports" method and can not figure out how  to make it work. Here is what I hav...
  • cunderw's avatar
    cunderw
    7 years ago

    Ah, I forgot the Javascript scope can be a little weird. You won't actually be able to reference that var directly without it being a const. 

     

    So you could approach it two different ways:

     

    let fooString = ""

function setFooString(){
 
 fooString = "Test";
 
}

function getFooString() {
  
  return fooString;
}

module.exports.setFooString = setFooString;
module.exports.getFooString = getFooString;
    // bar file

let foo = require("foo");

function barFunction() { 
  foo.setFooString();
  ShowMessage(foo.getFooString());
}

    Or you could do a const object like this:

     

    // foo file
const info = {
  fooString : ""
}

function setFooString(){
 
 info.fooString = "Test";
 
}

module.exports.setFooString = setFooString;
module.exports.info = info;
    // bar file

let foo = require("foo");

function barFunction() { 
  foo.setFooString();
  ShowMessage(foo.info.fooString);
}

    I personally would prefer the second way because it's much easier to expand on what you're acceessing from the first unit.

royd's avatar
royd
Regular Contributor

Hi cunderw

 

This morning corrected and tried your suggestion. I also realized that I missed a few things as well, so here is what I did -

//Patinet_Information
var nameOfPatient;
function patientStat(){
 ...
 nameOfPatient = page.FindChild("idStr", "patientName", 10).contentText;
 ...
 }

 //module.exports.patientStat = patientStat;
 module.exports.nameOfPatient = nameOfPatient;

and ...

 var Patinet_Information = require("Patinet_Information");
function createPatient(){
 ...
 let pName = page.FindChildByXPath("//input[@id='userName']");;
 pName.SetText(Patinet_Information.nameOfPatient);
}

  I am still getting nameOfPatinet 'undefined'.

cunderw's avatar
cunderw
Community Hero
7 years ago

Ah, I forgot the Javascript scope can be a little weird. You won't actually be able to reference that var directly without it being a const. 

 

So you could approach it two different ways:

 

let fooString = ""

function setFooString(){
 
 fooString = "Test";
 
}

function getFooString() {
  
  return fooString;
}

module.exports.setFooString = setFooString;
module.exports.getFooString = getFooString;
// bar file

let foo = require("foo");

function barFunction() { 
  foo.setFooString();
  ShowMessage(foo.getFooString());
}

Or you could do a const object like this:

 

// foo file
const info = {
  fooString : ""
}

function setFooString(){
 
 info.fooString = "Test";
 
}

module.exports.setFooString = setFooString;
module.exports.info = info;
// bar file

let foo = require("foo");

function barFunction() { 
  foo.setFooString();
  ShowMessage(foo.info.fooString);
}

I personally would prefer the second way because it's much easier to expand on what you're acceessing from the first unit.

  • royd's avatar
    royd
    Regular Contributor
    7 years ago

    Hi Carson

     

    Thank you very much for your help. I will have to take a close look at it, I am relatively new to Javascript, still learning. :)

     

    Thank you for taking the time to explain.