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+--- Thread: Randomize Multiple Choice Questions (/thread-2379.html)
Randomize Multiple Choice Questions - jupertino - 09-08-2024
Hi everyone, so I had a problem - I found that I was memorizing the position of the answer, rather than the answer itself. As a result, I'd like to share a script I made that randomizes order of the answers in the multiple choice questions. You'll need to download a chrome plugin to use it, and I never encourage anyone to copy code off of the internet without reading it manually first. Please read the code for yourself, it's very short.
This script does the following:
It selects all elements with the class quesContainer, which corresponds to your question containers.
For each question, it selects all <p> elements, which contain the answer options.
It shuffles the order of these options.
Finally, it re-appends the shuffled options back to the question container.
1. Install the Tampermonkey extension for Chrome (if you haven't already).
2. Open Tampermonkey in Chrome and create a new script.
3. paste the script (after you've vetted it) into the script editor.
4. Save the script.
5. Go to chrome://extensions/ and click "developer mode" on the top right in order to enable script injection. Mine didn't work until I did this.
Script is below:
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// ==UserScript==
// @name Improved Randomize Multiple Choice Options for How2Pass
// @namespace http://tampermonkey.net/
// @version 0.4
// @description Randomize the order of multiple choice options for How2Pass website with improved logging
// @match https://www.how2pass.com/emembers/enarsi410/onlinetest/*
// @grant none
// ==/UserScript==
(function() {
'use strict';
let hasRun = false;
function shuffleArray(array) {
for (let i = array.length - 1; i > 0; i--) {
const j = Math.floor(Math.random() * (i + 1));
[array[i], array[j]] = [array[j], array[i]];
}
}
function randomizeOptions() {
if (hasRun) {
console.log("Script has already run once, skipping...");
return;
}
console.log("Starting randomization process...");
const questions = document.querySelectorAll('.quesContainer');
console.log(`Found ${questions.length} questions`);
questions.forEach((question, index) => {
const options = Array.from(question.querySelectorAll('p > label.black'));
console.log(`Question ${index + 1} has ${options.length} options`);
if (options.length > 0) {
const optionsContainer = options[0].parentNode.parentNode;
const originalOrder = options.map(opt => opt.textContent.trim());
console.log(`Original order for Q${index + 1}:`, originalOrder);
shuffleArray(options);
options.forEach(option => optionsContainer.appendChild(option.parentNode));
const newOrder = Array.from(question.querySelectorAll('p > label.black')).map(opt => opt.textContent.trim());
console.log(`New order for Q${index + 1}:`, newOrder);
if (JSON.stringify(originalOrder) !== JSON.stringify(newOrder)) {
console.log(`Question ${index + 1} options were successfully randomized`);
} else {
console.log(`Warning: Question ${index + 1} options remained in the same order`);
}
} else {
console.log(`No options found for question ${index + 1}`);
}
});
console.log("Randomization process complete");
hasRun = true;
}
// Wait for the page to load and then run the script
window.addEventListener('load', function() {
console.log("Page loaded, waiting 3 seconds before randomizing...");
setTimeout(randomizeOptions, 3000);
});
})();
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Line-by-Line Explanation of the Multiple-Choice Randomizer Script
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[align=left]// ==UserScript==
// @name Improved Randomize Multiple Choice Options for How2Pass
// @namespace http://tampermonkey.net/
// @version 0.4
// @description Randomize the order of multiple choice options for How2Pass website with improved logging
// @match https://www.how2pass.com/emembers/enarsi410/onlinetest/*
// @grant none
// ==/UserScript==
---------------------------------------------------------------------------------------------------------------------------------------
This is the metadata block for Tampermonkey. It defines the script's name, version, description, and which websites it should run on.
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(function() {
'use strict';
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This creates an Immediately Invoked Function Expression (IIFE) to avoid polluting the global scope. 'use strict' enables strict mode for better error catching.
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let hasRun = false;
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This variable keeps track of whether the script has already run to prevent multiple executions.
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function shuffleArray(array) {
for (let i = array.length - 1; i > 0; i--) {
const j = Math.floor(Math.random() * (i + 1));
[array[i], array[j]] = [array[j], array[i]];
}
}
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This function implements the Fisher-Yates shuffle algorithm to randomize the order of elements in an array.
---------------------------------------------------------------------------------------------------------------------------------------
function randomizeOptions() {
if (hasRun) {
console.log("Script has already run once, skipping...");
return;
}
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This is the main function that randomizes the options. It first checks if the script has already run to avoid repeated randomization.
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console.log("Starting randomization process...");
const questions = document.querySelectorAll('.quesContainer');
console.log(`Found ${questions.length} questions`);
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This logs the start of the process and finds all question containers on the page.
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questions.forEach((question, index) => {
const options = Array.from(question.querySelectorAll('p > label.black'));
console.log(`Question ${index + 1} has ${options.length} options`);
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For each question, this finds all the answer options and logs how many there are.
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if (options.length > 0) {
const optionsContainer = options[0].parentNode.parentNode;
const originalOrder = options.map(opt => opt.textContent.trim());
console.log(`Original order for Q${index + 1}:`, originalOrder);
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If options are found, it stores the original order for logging purposes.
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shuffleArray(options);
options.forEach(option => optionsContainer.appendChild(option.parentNode));
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This shuffles the options and reappends them to the container, effectively randomizing their order.
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const newOrder = Array.from(question.querySelectorAll('p > label.black')).map(opt => opt.textContent.trim());
console.log(`New order for Q${index + 1}:`, newOrder);
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This logs the new order of options after randomization.
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if (JSON.stringify(originalOrder) !== JSON.stringify(newOrder)) {
console.log(`Question ${index + 1} options were successfully randomized`);
} else {
console.log(`Warning: Question ${index + 1} options remained in the same order`);
}
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This checks if the order actually changed and logs the result.
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} else {
console.log(`No options found for question ${index + 1}`);
}
});
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If no options were found for a question, this logs a message.
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console.log("Randomization process complete");
hasRun = true;
}
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This logs the completion of the process and sets the hasRun flag to true.
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window.addEventListener('load', function() {
console.log("Page loaded, waiting 3 seconds before randomizing...");
setTimeout(randomizeOptions, 3000);
});
})();
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This adds an event listener to run the randomization function 3 seconds after the page has fully loaded and closes the IIFE.
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Let me know if you have any questions. I hope this helps anyone else!