Sharing data in JavaScript functions

Question

Sharing data in JavaScript functions

In order to use certain variables in two separate functions, there are some considerations to keep in mind. The first function is responsible for calculating and displaying a conjugated verb using these variables. The second function checks the user's answers against these variables and adjusts HTML styling as needed.

The challenge lies in the fact that these variables are calculated randomly each time they are needed:

function randomIntFromInterval(min,max) {
return Math.floor(Math.random()*(max-min+1)+min); }

var tense = randomIntFromInterval(1, 6);
var person = randomIntFromInterval(1, 3);
var number = randomIntFromInterval(1, 2);
var voice = randomIntFromInterval(1, 2);

Declaring them as global variables won't work since they need to be recalculated for each call of the first function. Similarly, creating a separate function for these variables won't solve the issue because both functions require the same values.

How can this dilemma be resolved?

javascript random scope

Answer 1

Answer №1

When transferring a structure of values between two functions, passing each value individually may not be the most efficient option. Instead, consider using an object with named keys to streamline the process:

function generateRandomNumber(min,max) {
  return Math.floor(Math.random()*(max-min+1)+min); 
}

function getRandomSections() {
  return {
    tense: generateRandomNumber(1, 6),
    person: generateRandomNumber(1, 3),
    number: generateRandomNumber(1, 2),
    voice: generateRandomNumber(1, 2)
  };
}

function manipulateSections(sections) {
  // perform actions
}

function processSections(sections) {
  // perform actions
}

// Implementing it all together
var sections = getRandomSections();
manipulateSections(sections);
processSections(sections); // utilizing the same values in a second function

If the values come from different sources, it's recommended to use individual parameters and execute:

function handleValues(tense, person, number, voice) {
  // perform actions
}

handleValues(getTense(), getPerson(), getNumber(), getVoice());

To create a more dynamic list of fields, you can modify getRandomSections to be data-driven like this:

function generateFields(names, func) {
  var obj = {};
  names.forEach(function (name) {
    obj[name] = func(x, y);
  });
  return obj;
}

// Implementation
generateFields(['tense', 'person', 'number', 'voice'], generateRandomNumber);

Answer 2

When transferring a structure of values between two functions, passing each value individually may not be the most efficient option. Instead, consider using an object with named keys to streamline the process:

function generateRandomNumber(min,max) {
  return Math.floor(Math.random()*(max-min+1)+min); 
}

function getRandomSections() {
  return {
    tense: generateRandomNumber(1, 6),
    person: generateRandomNumber(1, 3),
    number: generateRandomNumber(1, 2),
    voice: generateRandomNumber(1, 2)
  };
}

function manipulateSections(sections) {
  // perform actions
}

function processSections(sections) {
  // perform actions
}

// Implementing it all together
var sections = getRandomSections();
manipulateSections(sections);
processSections(sections); // utilizing the same values in a second function

If the values come from different sources, it's recommended to use individual parameters and execute:

function handleValues(tense, person, number, voice) {
  // perform actions
}

handleValues(getTense(), getPerson(), getNumber(), getVoice());

To create a more dynamic list of fields, you can modify getRandomSections to be data-driven like this:

function generateFields(names, func) {
  var obj = {};
  names.forEach(function (name) {
    obj[name] = func(x, y);
  });
  return obj;
}

// Implementation
generateFields(['tense', 'person', 'number', 'voice'], generateRandomNumber);

Answer 3

Answer №2

Is it possible for you to create something similar to the following?

function generateRandomInteger(min, max) {
    return Math.floor(Math.random() * (max - min + 1) + min); 
}

function functionOne(t, p, n, v){
    // code block
}

function functionTwo(t, p, n, v){
    // code block
}

function startProcess(){
    var tense = generateRandomInteger(1, 6);
    var person = generateRandomInteger(1, 3);
    var number = generateRandomInteger(1, 2);
    var voice = generateRandomInteger(1, 2);

    functionOne(tense, person, number, voice);
    functionTwo(tense, person, number, voice);
}

startProcess();

Answer 4

Is it possible for you to create something similar to the following?

function generateRandomInteger(min, max) {
    return Math.floor(Math.random() * (max - min + 1) + min); 
}

function functionOne(t, p, n, v){
    // code block
}

function functionTwo(t, p, n, v){
    // code block
}

function startProcess(){
    var tense = generateRandomInteger(1, 6);
    var person = generateRandomInteger(1, 3);
    var number = generateRandomInteger(1, 2);
    var voice = generateRandomInteger(1, 2);

    functionOne(tense, person, number, voice);
    functionTwo(tense, person, number, voice);
}

startProcess();

Sharing data in JavaScript functions

Answer №1

Answer №2

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