Tips on transferring a value from one JavaScript file to another JavaScript file

Currently, I am able to pass parameters from one JavaScript file to another using the jQuery method "$.getScript". For example, in the "secondJavaScript.js" file, I use a $.getScript call to invoke the function callMemoPage() from "firstJavaScript.js", passing the parameters "pageName" and "acctNum". The challenge is how to retrieve the value of the function "callMemoPage" in the "secondJavaScript.js" file and store it in the variable "Memo" located in "firstJavaScript.js".

$.getScript('firstJavaScript.js', function(){
  
  getMemo();
  
  function getMemo(){
    
    var pageName = "Memo Page";
    var acctNum = "123";
    
    // callMemoPage function is defined in "firstJavaScript.js"
    callMemoPage(pageName, acctNum);
    console.log(Memo);
    
  }
  
});

// firstJavaSctipt.js file

function callMemoPage(pageName, acctNum){
  
  var Memo;
  
  if(pageName == 'Memo Page' && acctNum == '123'){
    function(memoField){
       var memoField = window.open("https://www.example.com");
      // question remains on how to pass the value of Memo into secondJavaScript.js file 
      Memo = $(memoField).find('input[name="MEMO"]').val();
    }
   
  }
}

Answer №1

If you want to save the data as a JSON file, utilize Node.js's fs library for writing it:

const fs = require('fs');
fs.writeFileSync('data.json', JSON.stringify(dataToSave));

// Accessing the saved JSON file
const savedData = require('data.json');

Answer №3

Suppose you have several functions in fileOne.js that need to be used in fileTwo.js. When it comes to importing them into HTML, the process looks like this:

<html>
 ...
 <script src="fileOne.js">
 <script src="fileTwo.js">
 ...
</html>

It is important to note that fileOne.js must be imported before fileTwo.js, as this ensures that all variables from fileOne.js are accessible in fileTwo.js. This behavior is due to HTML being synchronous.

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