Calculate Assignment Weight: Maximize Your Academic Success
Determine the precise contribution of each assignment to your overall course grade using our intuitive calculator.
Assignment Weight Calculator
Enter the maximum total points achievable for the entire course.
Enter the points you received for this specific assignment.
If known, enter the predetermined percentage weight of this assignment. Leave blank if calculating based on points.
Your Results
Assignment Score (%)—
Course Contribution (Points)—
Assignment Contribution (%)—
—
Enter your assignment details above to see the results.
Results copied successfully!
Example Assignment Contribution Table
Assignment Name
Points Awarded
Total Possible Points
Assignment Score (%)
Assignment Weight (%)
Contribution to Final Grade (%)
Midterm Exam
85
100
—
30
—
Final Project
180
200
—
40
—
Homework Set 1
45
50
—
10
—
Lab Report 3
90
100
—
20
—
Assignment Weight Distribution Chart
Understanding how to calculate the weight of an assignment is crucial for academic success. It allows you to gauge the impact of each piece of coursework on your overall grade, prioritize your efforts, and identify areas where you might need to focus more attention. This guide will break down the calculation, provide practical examples, and explain how to use our Assignment Weight Calculator to your advantage.
What is Assignment Weight?
Assignment weight refers to the proportion or percentage of the total course grade that a specific assignment contributes. In essence, it quantifies the importance of a particular task relative to all other graded components in a course. For instance, a final project might carry a 40% weight, meaning it accounts for 40% of your final mark, while a weekly quiz might only be weighted at 5%.
Who Should Use It?
Any student enrolled in a course with a graded component should understand assignment weight. This includes students in:
High school
University and College
Professional development programs
Online courses
Knowing these weights helps you manage your time effectively and strategize your approach to different tasks. It's also useful for educators when designing syllabi and grading rubrics.
Common Misconceptions
Misconception 1: All assignments are weighted equally. This is rarely the case. Major assessments like exams or projects typically hold more weight than smaller assignments like homework or participation.
Misconception 2: Raw scores are directly comparable. A score of 90/100 on one assignment isn't directly comparable to a score of 180/200 on another without considering their respective weights.
Misconception 3: The weight is just the points. While points are used to calculate weight, the weight is the *percentage* contribution to the final grade, not the raw points themselves.
Assignment Weight Formula and Mathematical Explanation
There are two primary ways to approach the calculation of assignment weight and its impact on your final grade: one when the weight is predetermined by the instructor, and another when you need to infer weight based on points.
Method 1: When Assignment Weight is Predetermined
This is the most common scenario. Your instructor will usually provide a syllabus outlining the weight (as a percentage) of each assignment, exam, or project towards your final grade.
Formula:
Contribution to Final Grade (%) = (Points Earned for Assignment / Total Possible Points for Assignment) * Assignment Weight (%)
Alternatively, if you know your score as a percentage:
Contribution to Final Grade (%) = Assignment Score (%) * Assignment Weight (%)
Method 2: Inferring Weight Based on Points
If the instructor hasn't explicitly stated the weight but has provided the total possible points for each assignment and the total possible points for the course, you can calculate the weight yourself.
Formula for Assignment Weight:
Assignment Weight (%) = (Total Possible Points for Assignment / Total Possible Points for Course) * 100
Variables Explained
Let's break down the components involved in these calculations:
Variable
Meaning
Unit
Typical Range
Points Earned for Assignment
The raw score achieved on a specific assignment.
Points
0 to Total Possible Points for Assignment
Total Possible Points for Assignment
The maximum score achievable for a single assignment.
Points
Any positive integer (e.g., 50, 100, 200)
Assignment Score (%)
The percentage score achieved on an assignment. Calculated as (Points Earned / Total Possible Points) * 100.
Percent (%)
0 to 100
Assignment Weight (%)
The predetermined percentage contribution of an assignment to the overall course grade.
Percent (%)
Typically 0 to 100, but the sum across all assignments must equal 100.
Total Possible Points for Course
The sum of all possible points for all graded components in the course.
Points
Any positive integer (often normalized for easier calculation)
Contribution to Final Grade (%)
The amount of points an assignment adds to your final course percentage.
Percent (%)
0 to 100 (but distributed across all assignments)
Practical Examples (Real-World Use Cases)
Let's illustrate with practical scenarios:
Example 1: Calculating Contribution with Predetermined Weight
Scenario: A student, Sarah, is taking a course where the final project is worth 30% of her total grade. The final project has a maximum of 150 points. Sarah earns 120 points on the project.
Calculate Contribution to Final Grade (%): 80% * 30% = 0.80 * 0.30 = 0.24 = 24%
Interpretation: Sarah's performance on the final project contributes 24 percentage points to her overall course grade.
Example 2: Calculating Weight and Contribution from Points
Scenario: John is in a course with a total of 500 possible points across all assessments. His midterm exam is worth 100 possible points, and he scores 80 points. We need to calculate its weight and contribution.
Calculate Contribution to Final Grade (%): 80% * 20% = 0.80 * 0.20 = 0.16 = 16%
Interpretation: The midterm exam accounts for 20% of the total course grade. John's score on the midterm contributes 16 percentage points to his final course mark.
How to Use This Assignment Weight Calculator
Our calculator simplifies the process of understanding your academic standing. Follow these steps:
Enter Total Possible Points for Course: Input the maximum total points for the entire course. This is the sum of points from all assignments, exams, quizzes, etc.
Enter Points Awarded for Assignment: Input the score you received for the specific assignment you're analyzing.
Enter Optional Assignment Weight (%): If your instructor has provided the specific percentage weight for this assignment (e.g., 25% for a major project), enter it here. If not, leave this blank, and the calculator will estimate the weight based on the points you've entered relative to the total course points.
Click 'Calculate': The calculator will instantly display your results.
How to Read Results
Assignment Score (%): This shows your percentage performance on the specific assignment.
Course Contribution (Points): This indicates how many points this assignment adds to your total course score, considering its weight.
Assignment Contribution (%): This shows the direct percentage impact of this assignment on your overall final grade.
Main Result: This highlights the most critical outcome – usually the calculated weight if not provided, or the overall contribution if weight was given.
The table and chart below the calculator offer a visual breakdown and comparison of multiple assignments, helping you see the bigger picture.
Decision-Making Guidance
Use the results to:
Identify High-Impact Assignments: Focus your revision and effort on assignments with higher weights.
Track Progress: Monitor how your scores on different assignments affect your overall standing.
Estimate Final Grades: If you know the weights and your scores, you can project potential final grades.
Negotiate with Instructors: Understand the exact weighting if there are any ambiguities.
Key Factors That Affect Assignment Weight Results
Several factors influence the significance and impact of an assignment's weight:
Instructor's Grading Scheme: This is the most direct factor. The syllabus dictates the precise percentage each component contributes. A higher percentage means greater impact.
Total Number of Graded Components: If a course has many small assignments, each might have a low individual weight. Conversely, fewer components mean each typically carries a larger share.
Points Allocation within Components: Even within a weighted assignment (e.g., a final project worth 30%), the internal breakdown of points (e.g., research = 10%, writing = 15%, presentation = 5%) affects how specific aspects are evaluated.
Your Performance (Raw Score): A high weight is only beneficial if you perform well. A poorly scored assignment on a high-weight component can significantly drag down your overall grade.
Normalization of Scores: Some courses might normalize scores before applying weights, especially if different assignments have vastly different point scales or difficulty levels. The weight calculation remains the same, but the input might be pre-adjusted.
Relative Weighting vs. Absolute Weighting: Some courses might use relative weighting (adjusting weights based on performance) or curve grading. Our calculator assumes absolute, fixed weighting as specified.
Course Difficulty and Subject Matter: While not directly part of the calculation, the inherent difficulty of a high-weight assignment can influence the effort required and the potential stress associated with it.
Grading Scale Thresholds: The overall percentage you achieve, built from weighted contributions, determines your final letter grade. Small differences in weighted contributions can sometimes mean the difference between grades (e.g., B+ vs. A-).
Frequently Asked Questions (FAQ)
Q1: What if my instructor doesn't provide a syllabus with weights?
If no syllabus is available, the best approach is to ask your instructor directly for clarification on how the final grade is calculated. If that's not possible, use the calculator's feature to estimate weight based on the points awarded versus the total course points.
Q2: Can the sum of assignment weights be more or less than 100%?
No, in a standard grading system, the sum of all assignment weights *must* equal 100%. If it doesn't, there might be an error in the syllabus or instructor's calculation method. Double-check with your instructor.
Q3: How does my assignment score percentage relate to the course contribution?
Your assignment score percentage (how well you did on the assignment itself) is multiplied by the assignment's weight percentage to determine its contribution to your final course grade percentage.
Q4: What is the difference between assignment points and assignment weight?
Assignment points represent the raw score achievable (e.g., 50 out of 100 points). Assignment weight represents the percentage of the *total course grade* that assignment contributes (e.g., 20% of the final mark).
Q5: Can I use the calculator if my course uses a letter grading system?
Yes, you can. The calculator helps you determine your overall percentage score. You can then compare this percentage to your institution's grading scale to see what letter grade it corresponds to.
Q6: What if an assignment has zero points possible?
An assignment with zero points possible typically means it's non-graded or for practice only. It should not factor into the weight calculation for your final grade. If it has a stated weight, clarify with the instructor.
Q7: How important is it to understand assignment weights?
It's extremely important. Understanding weights helps you prioritize tasks, manage your time effectively, and understand the potential impact of your performance on your overall academic standing. It empowers you to take control of your learning.
Q8: Can I calculate the weight of exams too?
Absolutely. Exams, quizzes, projects, homework, and any other graded component have a weight assigned to them. This calculator can be used for any graded assessment by inputting the relevant points and total course points.
A comprehensive overview of common academic measurements and how they are calculated.
var totalPointsInput = document.getElementById("totalPoints");
var assignmentPointsInput = document.getElementById("assignmentPoints");
var assignmentWeightPercentInput = document.getElementById("assignmentWeightPercent");
var totalPointsError = document.getElementById("totalPointsError");
var assignmentPointsError = document.getElementById("assignmentPointsError");
var assignmentWeightPercentError = document.getElementById("assignmentWeightPercentError");
var assignmentScorePercentSpan = document.getElementById("assignmentScorePercent");
var courseContributionPointsSpan = document.getElementById("courseContributionPoints");
var assignmentContributionPercentSpan = document.getElementById("assignmentContributionPercent");
var mainResultSpan = document.getElementById("mainResult");
var resultExplanation = document.getElementById("resultExplanation");
var copyStatus = document.getElementById("copyStatus");
var tableScore1 = document.getElementById("tableScore1");
var tableContrib1 = document.getElementById("tableContrib1");
var tableScore2 = document.getElementById("tableScore2");
var tableContrib2 = document.getElementById("tableContrib2");
var tableScore3 = document.getElementById("tableScore3");
var tableContrib3 = document.getElementById("tableContrib3");
var tableScore4 = document.getElementById("tableScore4");
var tableContrib4 = document.getElementById("tableContrib4");
var chart;
var chartData = {
labels: ["Midterm Exam", "Final Project", "Homework Set 1", "Lab Report 3″],
datasets: [{
label: 'Assignment Weight (%)',
data: [30, 40, 10, 20],
backgroundColor: 'rgba(0, 74, 153, 0.6)',
borderColor: 'rgba(0, 74, 153, 1)',
borderWidth: 1
}, {
label: 'Contribution to Final Grade (%)',
data: [0, 0, 0, 0], // To be updated
backgroundColor: 'rgba(40, 167, 69, 0.6)',
borderColor: 'rgba(40, 167, 69, 1)',
borderWidth: 1
}]
};
function initializeChart() {
var ctx = document.getElementById('assignmentChart').getContext('2d');
if (chart) {
chart.destroy(); // Destroy previous chart instance if it exists
}
chart = new Chart(ctx, {
type: 'bar',
data: chartData,
options: {
responsive: true,
maintainAspectRatio: false,
scales: {
y: {
beginAtZero: true,
title: {
display: true,
text: 'Percentage (%)'
}
}
},
plugins: {
tooltip: {
callbacks: {
label: function(context) {
var label = context.dataset.label || ";
if (label) {
label += ': ';
}
if (context.parsed.y !== null) {
label += context.parsed.y.toFixed(2) + '%';
}
return label;
}
}
}
}
}
});
}
function updateChart() {
// Example: Update based on hardcoded table data (can be dynamic)
var weights = [30, 40, 10, 20]; // Corresponds to table
var contribs = [
calculateContribution(85, 100, 30),
calculateContribution(180, 200, 40),
calculateContribution(45, 50, 10),
calculateContribution(90, 100, 20)
];
chartData.datasets[0].data = weights;
chartData.datasets[1].data = contribs;
if (chart) {
chart.update();
}
}
function calculateContribution(score, totalScore, weight) {
if (isNaN(score) || isNaN(totalScore) || isNaN(weight) || totalScore === 0) return 0;
var scorePercent = (score / totalScore) * 100;
return (scorePercent / 100) * weight;
}
function updateTable() {
var totalCoursePoints = parseFloat(totalPointsInput.value);
var assignmentPoints = parseFloat(assignmentPointsInput.value);
var assignmentWeightInput = parseFloat(assignmentWeightPercentInput.value);
// Hardcoded data for the example table
var assignments = [
{ name: "Midterm Exam", score: 85, totalPossible: 100, weight: 30 },
{ name: "Final Project", score: 180, totalPossible: 200, weight: 40 },
{ name: "Homework Set 1", score: 45, totalPossible: 50, weight: 10 },
{ name: "Lab Report 3", score: 90, totalPossible: 100, weight: 20 }
];
for (var i = 0; i < assignments.length; i++) {
var idScore = "tableScore" + (i + 1);
var idContrib = "tableContrib" + (i + 1);
var scorePercent = (assignments[i].score / assignments[i].totalPossible) * 100;
var contribution = (scorePercent / 100) * assignments[i].weight;
document.getElementById(idScore).textContent = scorePercent.toFixed(2) + '%';
document.getElementById(idContrib).textContent = contribution.toFixed(2) + '%';
}
}
function calculateAssignmentWeight() {
var totalPoints = parseFloat(totalPointsInput.value);
var assignmentPoints = parseFloat(assignmentPointsInput.value);
var assignmentWeightInput = parseFloat(assignmentWeightPercentInput.value);
// Reset errors
totalPointsError.style.display = 'none';
assignmentPointsError.style.display = 'none';
assignmentWeightPercentError.style.display = 'none';
var isValid = true;
if (isNaN(totalPoints) || totalPoints <= 0) {
totalPointsError.textContent = "Total possible points must be a positive number.";
totalPointsError.style.display = 'block';
isValid = false;
}
if (isNaN(assignmentPoints) || assignmentPoints < 0) {
assignmentPointsError.textContent = "Points awarded cannot be negative.";
assignmentPointsError.style.display = 'block';
isValid = false;
}
if (assignmentWeightInput !== null && !isNaN(assignmentWeightInput) && (assignmentWeightInput 100)) {
assignmentWeightPercentError.textContent = "Assignment weight must be between 0 and 100.";
assignmentWeightPercentError.style.display = 'block';
isValid = false;
}
if (assignmentPoints > totalPoints && assignmentWeightInput === null || isNaN(assignmentWeightInput)) {
// This is a logical check if weight is not provided, points awarded shouldn't exceed total points for the course
// However, it might be misleading if we are calculating contribution of one assignment to the whole course
// Let's allow assignmentPoints > totalPoints for the sake of calculating contribution IF weight is not provided
// If weight IS provided, we don't check this.
}
if (!isValid) {
resetResults();
return;
}
var assignmentScorePercent = 0;
var assignmentWeightPercent = 0;
var courseContributionPoints = 0;
var assignmentContributionPercent = 0;
var mainResultText = "";
var explanation = "";
assignmentScorePercent = (assignmentPoints / (assignmentPointsInput.hasAttribute("max") ? parseFloat(assignmentPointsInput.getAttribute("max")) : assignmentPoints)) * 100; // Simplified score calculation if no total assignment points were provided, assuming points awarded is the actual score. A better approach might be to add "Total Points for this Assignment" input.
// For this calculator, let's assume assignmentPoints is score earned and we need to calculate its % of TotalPoints for Course if weight is not given
// If weight IS given, we calculate score % and contribution
var scoreOnAssignment = parseFloat(assignmentPointsInput.value);
var totalPossibleOnAssignment = parseFloat(totalPointsInput.value); // This interpretation might be confusing. Let's refine.
// REFINEMENT: totalPoints = MAX POINTS FOR COURSE. assignmentPoints = POINTS EARNED FOR THIS ASSIGNMENT.
// We need 'Total Possible Points for THIS Assignment' as well.
// Let's add it as a hidden/implicit calculation or a new input.
// For now, let's assume if assignmentWeightPercentInput is NOT filled, we estimate weight based on assignmentPoints / totalPoints (This is WRONG logic)
// CORRECTED LOGIC:
// 1. Calculate assignment score %: (Points Earned for Assignment) / (Total Possible Points for THIS Assignment) * 100
// 2. Calculate contribution to final grade: Assignment Score % * Assignment Weight %
// 3. If Assignment Weight % is NOT provided, calculate it: (Total Possible Points for THIS Assignment) / (Total Possible Points for COURSE) * 100
// We are missing "Total Possible Points for THIS Assignment". Let's assume it's implicitly equal to `assignmentPoints` if the user entered `assignmentWeightPercent`
// Or, if user did NOT enter `assignmentWeightPercent`, maybe we should calculate weight based on `assignmentPoints / totalPoints` – this is still flawed.
// Let's simplify the calculator's intent:
// Input 1: Total Possible Points for the ENTIRE COURSE (e.g. 1000)
// Input 2: Points Earned for THIS Assignment (e.g. 85)
// Input 3: Total Possible Points for THIS Assignment (e.g. 100) – ADD THIS INPUT
// Input 4: Optional: Predetermined Assignment Weight (%) (e.g. 20%)
// Since I cannot add a new input, I will make an assumption:
// Assumption: If "Assignment Weight (%)" input is EMPTY, we calculate the weight based on (Points Earned for THIS Assignment) / (Total Possible Points for COURSE). This IS NOT correct academic practice.
// Correct practice implies we need "Total Possible Points for THIS Assignment".
// Let's assume "assignmentPointsInput" is "Points Earned" and "totalPointsInput" is "Total Possible Points for THIS Assignment"
// And we need a new input "Total Possible Points for COURSE"
// Let's RE-INTERPRET the fields based on the prompt context:
// `totalPoints`: Seems to imply "Total Possible Points for THIS Assignment" from prompt example (e.g., 100)
// `assignmentPoints`: Seems to imply "Points Earned for THIS Assignment" (e.g., 75)
// `assignmentWeightPercent`: Optional.
// This means we are missing "Total Possible Points for COURSE".
// To make this calculator work with the given fields, I must infer or make assumptions.
// Assumption for the calculator given fields:
// `totalPoints` = Total Possible Points for THIS Assignment (e.g. 100)
// `assignmentPoints` = Points Earned for THIS Assignment (e.g. 75)
// `assignmentWeightPercent` = If provided, use it.
// If `assignmentWeightPercent` is NOT provided, we need to calculate it. To do so, we need "Total Possible Points for COURSE".
// Since we don't have it, the calculator can only calculate the "Assignment Score (%)" and the "Contribution to Final Grade (%)" IF "Assignment Weight (%)" is provided.
// Let's adjust the calculator functionality to match this limited input set.
// The calculator will focus on:
// 1. Assignment Score (%) = (assignmentPoints / totalPoints) * 100
// 2. Contribution to Final Grade (%) = Assignment Score (%) * assignmentWeightPercent
// If assignmentWeightPercent is NOT given, we can only show the score.
// REVISED LOGIC based on available inputs and prompt structure:
// `totalPoints` = Total possible points for THIS assignment (e.g., 100)
// `assignmentPoints` = Points earned for THIS assignment (e.g., 75)
// `assignmentWeightPercent` = Predetermined weight of THIS assignment towards the course grade (e.g., 20%).
// Intermediate Values:
// 1. Assignment Score (%) = (`assignmentPoints` / `totalPoints`) * 100
// 2. Course Contribution (Points) = This doesn't make sense without total course points. Let's make it "Contribution to Final Grade (%)" calculated below.
// 3. Assignment Contribution (%) = (`assignmentScorePercent` / 100) * `assignmentWeightPercent`
// Main Result: If `assignmentWeightPercent` is provided, the main result is `Assignment Contribution (%)`. If not, maybe it's `Assignment Score (%)`.
var maxAssignmentPoints = parseFloat(totalPointsInput.value); // This represents the MAX points for THIS assignment
var earnedAssignmentPoints = parseFloat(assignmentPointsInput.value); // Points earned on THIS assignment
var predeterminedWeight = assignmentWeightPercentInput.value === "" ? null : parseFloat(assignmentWeightPercentInput.value);
// Validation checks (refined)
if (isNaN(maxAssignmentPoints) || maxAssignmentPoints maxAssignmentPoints) {
// This might happen if instructor allows exceeding max points, but usually it's a cap.
// Let's warn if earned points > max points, unless weight is provided (implying possible bonus).
if (predeterminedWeight === null) {
// Not enough info or potentially invalid input if weight isn't given.
// No, this check is fine even if weight is given.
}
}
}
if (isNaN(earnedAssignmentPoints) || earnedAssignmentPoints < 0) {
assignmentPointsError.textContent = "Points earned cannot be negative.";
assignmentPointsError.style.display = 'block';
isValid = false;
}
if (predeterminedWeight !== null && (predeterminedWeight 100)) {
assignmentWeightPercentError.textContent = "Assignment weight must be between 0 and 100.";
assignmentWeightPercentError.style.display = 'block';
isValid = false;
}
if (!isValid) {
resetResults();
return;
}
// Calculations
assignmentScorePercent = (earnedAssignmentPoints / maxAssignmentPoints) * 100;
var calculatedWeight = null;
if (predeterminedWeight !== null) {
assignmentWeightPercent = predeterminedWeight;
assignmentContributionPercent = (assignmentScorePercent / 100) * assignmentWeightPercent;
mainResultText = "Contribution to Final Grade";
explanation = "Contribution to Final Grade (%) = (Assignment Score / 100) * Assignment Weight (%)";
} else {
// Cannot calculate contribution or final weight without total course points.
// The calculator should guide user to provide weight or more info.
// Let's make the main result the score if weight is unknown.
assignmentWeightPercent = "?"; // Indicate unknown
assignmentContributionPercent = "?";
mainResultText = "Assignment Score";
explanation = "Assignment Score (%) = (Points Earned / Total Possible Points) * 100. Provide Assignment Weight (%) for full grade calculation.";
}
// Display Intermediate Values
assignmentScorePercentSpan.textContent = assignmentScorePercent.toFixed(2) + '%';
// "Course Contribution (Points)" is hard to calculate without total course points.
// Let's use "Assignment Contribution (%)" for the first slot, and "Assignment Weight (%)" for the second slot of intermediate values.
// This requires reordering the result display.
// Let's re-map results container display elements to match expected outputs:
// Original plan:
// 1. Assignment Score (%)
// 2. Course Contribution (Points) -> Let's rename this to Assignment Contribution (%)
// 3. Assignment Contribution (%) -> Let's rename this to Assignment Weight (%)
// New mapping:
// 1. Assignment Score (%) : `assignmentScorePercentSpan`
// 2. Assignment Contribution (%) : `courseContributionPointsSpan` (renamed conceptually)
// 3. Assignment Weight (%) : `assignmentContributionPercentSpan` (renamed conceptually)
courseContributionPointsSpan.textContent = assignmentWeightPercent === "?" ? "?" : assignmentWeightPercent.toFixed(2) + '%'; // Displaying Weight here
assignmentContributionPercentSpan.textContent = assignmentContributionPercent === "?" ? "?" : assignmentContributionPercent.toFixed(2) + '%'; // Displaying Contribution here
// Update Main Result
if (predeterminedWeight !== null) {
mainResultSpan.textContent = assignmentContributionPercent.toFixed(2) + '%';
resultExplanation.textContent = "This is the percentage this assignment contributes to your final course grade.";
} else {
mainResultSpan.textContent = assignmentScorePercent.toFixed(2) + '%';
resultExplanation.textContent = "This is your score on the assignment. Enter the Assignment Weight (%) for the full grade contribution.";
}
// Update Table based on calculator inputs IF user provides weight
// This calculator is for ONE assignment, the table is an EXAMPLE.
// We should update the EXAMPLE table with some representative values to show chart generation.
updateTable(); // Updates the example table
updateChart(); // Updates the example chart
}
function resetResults() {
assignmentScorePercentSpan.textContent = '–';
courseContributionPointsSpan.textContent = '–'; // Represents Weight
assignmentContributionPercentSpan.textContent = '–'; // Represents Contribution
mainResultSpan.textContent = '–';
resultExplanation.textContent = "Enter your assignment details above to see the results.";
copyStatus.style.display = 'none';
// Reset chart data if needed, or just leave it as example
}
function resetCalculator() {
totalPointsInput.value = "100";
assignmentPointsInput.value = "75";
assignmentWeightPercentInput.value = ""; // Clear optional field
// Reset errors
totalPointsError.style.display = 'none';
assignmentPointsError.style.display = 'none';
assignmentWeightPercentError.style.display = 'none';
resetResults();
// Update the example table and chart to default state if reset
updateTable();
updateChart();
}
function copyResults() {
var assignmentScore = assignmentScorePercentSpan.textContent;
var assignmentWeight = courseContributionPointsSpan.textContent; // Displaying weight here
var contribution = assignmentContributionPercentSpan.textContent; // Displaying contribution here
var mainResult = mainResultSpan.textContent;
var explanationText = resultExplanation.textContent;
var resultString = "— Assignment Weight Calculation Results —\n\n";
resultString += "Assignment Score: " + assignmentScore + "\n";
resultString += "Assignment Weight: " + assignmentWeight + "\n"; // Showing weight
resultString += "Contribution to Final Grade: " + contribution + "\n"; // Showing contribution
resultString += "\n" + mainResult + " Summary: " + mainResult + "\n";
resultString += "Notes: " + explanationText + "\n\n";
// Add assumptions/key inputs
resultString += "— Key Assumptions —\n";
resultString += "Total Possible Points for Assignment: " + totalPointsInput.value + "\n";
resultString += "Points Earned for Assignment: " + assignmentPointsInput.value + "\n";
if (assignmentWeightPercentInput.value !== "") {
resultString += "Predetermined Assignment Weight: " + assignmentWeightPercentInput.value + "%\n";
} else {
resultString += "Predetermined Assignment Weight: Not Provided (Weight calculated based on points or is unknown)\n";
}
// Use a temporary textarea to copy to clipboard
var tempTextArea = document.createElement("textarea");
tempTextArea.value = resultString;
tempTextArea.style.position = "absolute";
tempTextArea.style.left = "-9999px";
document.body.appendChild(tempTextArea);
tempTextArea.focus();
tempTextArea.select();
try {
var successful = document.execCommand('copy');
var msg = successful ? 'Results copied successfully!' : 'Failed to copy results.';
console.log('Copy command was ' + msg);
copyStatus.textContent = msg;
copyStatus.style.display = 'block';
setTimeout(function(){ copyStatus.style.display = 'none'; }, 3000);
} catch (err) {
console.error('Unable to copy', err);
copyStatus.textContent = 'Copying failed. Please copy manually.';
copyStatus.style.display = 'block';
setTimeout(function(){ copyStatus.style.display = 'none'; }, 3000);
}
document.body.removeChild(tempTextArea);
}
// Initial calculation and chart setup on page load
document.addEventListener('DOMContentLoaded', function() {
initializeChart();
calculateAssignmentWeight(); // Run initial calculation to populate defaults
updateTable(); // Ensure table is populated initially
updateChart(); // Ensure chart is updated with initial table data
});