Draw Weight Calculator

Draw Weight Calculator: Find Your Optimal Bow Weight :root { –primary-color: #004a99; –success-color: #28a745; –background-color: #f8f9fa; –card-background: #ffffff; –text-color: #333; –border-color: #ddd; –error-color: #dc3545; –shadow-color: rgba(0, 0, 0, 0.1); } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(–background-color); color: var(–text-color); line-height: 1.6; margin: 0; padding: 0; display: flex; flex-direction: column; align-items: center; } .container { width: 100%; max-width: 1000px; margin: 20px auto; padding: 0 15px; box-sizing: border-box; } header { background-color: var(–primary-color); color: #fff; padding: 20px 0; text-align: center; width: 100%; box-shadow: 0 2px 5px var(–shadow-color); } header h1 { margin: 0; font-size: 2.5em; font-weight: 700; } main { width: 100%; background-color: var(–card-background); padding: 30px; border-radius: 8px; box-shadow: 0 4px 15px var(–shadow-color); margin-top: 20px; } .calc-section { margin-bottom: 30px; 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Draw Weight Calculator

Determine your ideal archery draw weight for peak performance and safety.

Archery Draw Weight Calculator

Enter your height in centimeters (cm).
Enter your wingspan in centimeters (cm).
Beginner (0-1 year) Intermediate (1-3 years) Advanced (3+ years)
Select your archery experience.
Target Archery Hunting Recreational/Field Archery
Choose the primary purpose of your archery.
Enter your age in years.

Your Recommended Draw Weight

Estimated Draw Length: cm

Bow Weight Category:

Suggested Bow Model Type:

Formula Used: The draw weight is estimated using a simplified model that considers arm length, experience, and intended use. A base draw length is calculated from arm length. This is then used to estimate draw weight, with adjustments for experience and activity.

Draw Weight vs. Draw Length

Estimated draw weight for different draw lengths at your specified experience and use.
Draw Weight Recommendations
Draw Weight (lbs) Category Typical User Applications

What is Draw Weight?

{primary_keyword} is a fundamental measurement in archery that quantifies the amount of force (measured in pounds) required to draw a bowstring back to the archer's full draw length. It's a critical factor in selecting the right bow, influencing everything from arrow speed and trajectory to shooter comfort and consistency. Understanding your optimal draw weight ensures a safe, effective, and enjoyable archery experience, whether you're participating in target archery, hunting, or recreational shooting. A bow that's too heavy can lead to poor form, injury, and reduced accuracy, while one that's too light might not provide sufficient power for certain applications like hunting. This {primary_keyword} calculator aims to provide a personalized recommendation based on your physical characteristics and archery goals.

Who Should Use a Draw Weight Calculator?

Anyone involved in archery can benefit from using a {primary_keyword} calculator. This includes:

  • New Archers: Beginners need guidance to select a bow that is manageable and allows them to develop proper technique without strain.
  • Experienced Archers: Archers looking to upgrade their equipment or switch disciplines (e.g., from target to hunting) can use it to reassess their needs.
  • Recurve and Compound Bow Shooters: While the specific mechanics differ, the concept of optimal draw weight applies to both types of bows.
  • Coaches and Instructors: To help guide their students in selecting appropriate equipment.

Common Misconceptions about Draw Weight

  • "Heavier is always better": Many assume higher draw weight equates to better performance. However, the goal is the *optimal* weight for the individual archer, not the maximum possible.
  • Draw weight is fixed: For compound bows, draw weight can often be adjusted. For recurve bows, it's generally fixed for a given bow model.
  • It's the same for everyone: Draw weight is highly personalized. What works for one archer might be unsuitable for another, even with similar physical stats.
  • Draw weight directly equals arrow power: While correlated, arrow energy also depends on arrow weight, speed, and bow efficiency.

{primary_keyword} Formula and Mathematical Explanation

Calculating the precise {primary_keyword} is complex and depends on many biomechanical factors. However, we can estimate a recommended draw weight using a simplified model. This calculator uses a combination of established archery principles and empirical data.

Step-by-Step Derivation

1. Estimate Draw Length: A fundamental principle is that draw length is closely related to an archer's physical dimensions, particularly wingspan. A common estimation is that draw length is approximately 85-90% of wingspan for many archers.

2. Establish Base Draw Weight: For a given draw length and experience level, there's a typical range of draw weights that are considered effective and safe. Beginners start lower, while advanced archers might use heavier weights.

3. Adjust for Experience and Use:

  • Experience: Beginners require lower draw weights to develop proper form and avoid injury. Intermediate archers can handle slightly more, and advanced archers are accustomed to higher weights.
  • Intended Use: Hunting often requires higher energy (and thus potentially higher draw weight or faster arrows) than target or recreational archery.
  • Age: Younger or older archers might benefit from lower draw weights for safety and comfort.

4. Factor in Archer Height: While wingspan is more direct, height can be a secondary indicator, especially if wingspan isn't available or is disproportionate. Taller individuals *may* have longer draw lengths.

Variable Explanations

The core variables used in this calculator and their meanings are:

Variable Meaning Unit Typical Range
Archer Height The vertical measurement of the archer from head to toe. cm 140 – 200 cm
Wingspan (Arm Length) The measurement from the tip of one middle finger to the tip of the other, with arms extended horizontally. Often approximated to height if wingspan is unavailable, though less accurate. cm 150 – 210 cm
Experience Level Duration and intensity of archery practice. Categorical (Beginner, Intermediate, Advanced) N/A
Intended Use The primary purpose for which the bow will be used. Categorical (Target, Hunting, Recreational) N/A
Age The chronological age of the archer. Years 8 – 80+
Estimated Draw Length The calculated length the bowstring is drawn back. cm 60 – 90 cm
Recommended Draw Weight The calculated optimal force needed to draw the bow. lbs 20 – 70 lbs

Practical Examples (Real-World Use Cases)

Example 1: The Newbie Archer

Scenario: Sarah is 165 cm tall, has a wingspan of 170 cm, is a complete beginner (0-1 year experience), and wants to try recreational archery. She is 25 years old.

Inputs:

  • Archer Height: 165 cm
  • Wingspan: 170 cm
  • Experience Level: Beginner
  • Intended Use: Recreational
  • Age: 25

Calculation:

  • Estimated Draw Length: ~153 cm (approx. 90% of wingspan)
  • Recommended Draw Weight: ~30-35 lbs
  • Bow Weight Category: Light to Medium
  • Suggested Bow Model Type: Beginner Recurve or entry-level Compound bow

Interpretation: Sarah needs a lighter draw weight bow. A 30-35 lb bow will allow her to focus on developing a consistent drawing motion, anchoring properly, and aiming without excessive physical strain. This is crucial for building good habits early on.

Example 2: The Experienced Hunter

Scenario: David is 185 cm tall, has a wingspan of 195 cm, has been hunting with archery for 5 years (intermediate/advanced), and is looking for a bow suitable for deer hunting. He is 40 years old.

Inputs:

  • Archer Height: 185 cm
  • Wingspan: 195 cm
  • Experience Level: Advanced
  • Intended Use: Hunting
  • Age: 40

Calculation:

  • Estimated Draw Length: ~175.5 cm (approx. 90% of wingspan)
  • Recommended Draw Weight: ~55-65 lbs
  • Bow Weight Category: Medium to Heavy
  • Suggested Bow Model Type: Performance Compound Bow

Interpretation: David's longer draw length and experience, combined with the demands of hunting (requiring sufficient kinetic energy for ethical kills), suggest a higher draw weight. A 55-65 lb compound bow will likely provide the necessary power and arrow speed for effective hunting shots at reasonable distances, provided he maintains proper form.

How to Use This Draw Weight Calculator

Using our {primary_keyword} calculator is straightforward. Follow these steps:

  1. Measure Accurately:
    • Height: Stand straight against a wall and mark your height. Measure from the floor to the top of your head in centimeters.
    • Wingspan: Extend your arms straight out to your sides. Measure the distance from the tip of your middle finger on one hand to the tip of the middle finger on the other in centimeters. This is often very close to your height, but check for yourself.
  2. Input Your Data: Enter your measurements (height and wingspan in cm), select your experience level, intended use, and age from the dropdown menus in the calculator.
  3. Calculate: Click the "Calculate Draw Weight" button.
  4. Review Results: The calculator will display your estimated draw length, the recommended draw weight range in pounds (lbs), a general bow weight category, and a suggested bow model type.

How to Read Results

  • Estimated Draw Length: This is an approximation of how far you will pull the string back. It's crucial for setting up a bow correctly.
  • Recommended Draw Weight: This is the core output – the pounds of force recommended for you. It's often presented as a range (e.g., 40-50 lbs).
  • Bow Weight Category: This gives you a general idea (e.g., Light, Medium, Heavy) to help you narrow down choices.
  • Suggested Bow Model Type: Indicates whether a beginner, intermediate, or performance bow is likely suitable.

Decision-Making Guidance

Use the results as a strong guideline, not a rigid rule. Consider the following:

  • Comfort is Key: Always prioritize a draw weight you can comfortably and repeatedly draw and hold without shaking or fatigue. Accuracy suffers greatly if the draw weight is too high.
  • Consult a Pro Shop: The best way to confirm your draw weight is to visit a qualified archery pro shop. They can let you try different bows, check your form, and make precise adjustments.
  • Bow Adjustability: Many modern compound bows allow for draw weight adjustment within a certain range. This calculator helps you identify that range.
  • Recurve vs. Compound: Draw weight feels different between recurve and compound bows due to the let-off mechanism in compounds. This calculator provides a general recommendation applicable to both, but specific bow selection should consider the type.

Key Factors That Affect Draw Weight Results

While this calculator uses essential inputs, several other factors influence the ideal draw weight for an archer:

  1. Physical Strength and Conditioning: Beyond simple measurements, an individual's muscle strength, endurance, and core stability play a significant role. An athlete might handle a higher draw weight than someone of similar size but less conditioned.
  2. Technique and Form: Proper archery technique utilizes the body's larger muscle groups (back, shoulders, core) rather than just arm strength. Good form can make a higher draw weight feel more manageable. Conversely, poor form often necessitates a lower draw weight.
  3. Bow Type (Recurve vs. Compound): Compound bows offer "let-off," meaning the holding weight at full draw is significantly less than the peak draw weight. This calculator's output generally refers to the peak draw weight for compounds or the actual draw weight for recurves.
  4. Specific Archery Discipline: While covered by "Intended Use," the nuances matter. FITA field archery might have different requirements than 3D hunting simulation or indoor target leagues.
  5. Arrow Spine and Length: The arrows must be matched to the bow's draw weight and length for optimal flight. Heavily spined arrows may require a stronger bow to shoot correctly.
  6. Injury History and Physical Limitations: Previous injuries or existing conditions (like arthritis) may necessitate choosing a lower draw weight for long-term health and continued participation in archery.
  7. Personal Preference and Comfort: Ultimately, the "best" draw weight is one the archer can shoot consistently and comfortably. Over-bowing (using too much weight) is a common beginner mistake that hinders progress.

Frequently Asked Questions (FAQ)

What is the typical draw weight for a beginner?

For most adult beginners, a draw weight between 25-40 lbs is recommended, depending on their physical build and experience level. This calculator helps refine that based on specific measurements.

Can I adjust the draw weight on my bow?

Many modern compound bows are adjustable, allowing you to fine-tune the draw weight, usually within a 10-15 lb range. Traditional recurve and longbows typically have fixed draw weights.

Is a higher draw weight always better for hunting?

Not necessarily. While sufficient energy transfer is crucial for ethical hunting, accuracy and consistency are paramount. A hunter who can accurately place a shot with a 50 lb bow is more effective than one who struggles with a 70 lb bow and misses or makes a poor shot.

What is "let-off" on a compound bow?

Let-off is the percentage reduction in holding weight experienced by the archer once the bowstring reaches full draw. For example, a bow with 65 lbs peak draw weight and 75% let-off will only require the archer to hold 16.25 lbs (65 lbs * 0.25) at full draw.

Does draw weight affect arrow speed?

Yes, significantly. All other factors being equal, a higher draw weight will result in a faster arrow speed. However, factors like bow efficiency, arrow weight, and cam design also play crucial roles.

My wingspan is much larger than my height. How does this affect the calculation?

Your wingspan is a more direct measurement for estimating draw length. The calculator prioritizes wingspan. A large difference might indicate a longer or shorter than average draw length for your height, which the calculator accounts for.

Is it possible to "over-bow" myself?

Absolutely. Shooting a bow with a draw weight that is too heavy for you can lead to poor form, reduced accuracy, fatigue, and even injury. It's always better to start conservatively and increase draw weight only as your strength and technique improve.

How often should I check my draw weight?

If you have an adjustable compound bow, you might check it seasonally or when making significant changes to your training. For beginners, it's advisable to have your setup (including draw weight) checked by a professional periodically as you progress.

Related Tools and Internal Resources

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function validateInput(id, errorId, min, max, allowDecimal = true) { var input = document.getElementById(id); var errorElement = document.getElementById(errorId); var value = parseFloat(input.value); if (isNaN(value) || input.value.trim() === "") { errorElement.textContent = "This field cannot be empty."; errorElement.classList.add('visible'); return false; } if (!allowDecimal && !Number.isInteger(value)) { errorElement.textContent = "Please enter a whole number."; errorElement.classList.add('visible'); return false; } if (value max) { errorElement.textContent = "Value is too high. Maximum allowed: " + max + (id === 'archerHeight' || id === 'armLength' ? ' cm' : (id === 'age' ? ' years' : ")); errorElement.classList.add('visible'); return false; } errorElement.textContent = ""; errorElement.classList.remove('visible'); return true; } function calculateDrawWeight() { var heightValid = validateInput('archerHeight', 'archerHeightError', 120, 220); var armLengthValid = validateInput('armLength', 'armLengthError', 130, 230); var ageValid = validateInput('age', 'ageError', 8, 90, false); var experienceLevel = document.getElementById('experienceLevel').value; var intendedUse = document.getElementById('intendedUse').value; if (!heightValid || !armLengthValid || !ageValid) { document.getElementById('primary-result').textContent = "–"; document.getElementById('estimatedDrawLength').textContent = "–"; document.getElementById('bowWeightCategory').textContent = "–"; document.getElementById('bowModelType').textContent = "–"; return; } var height = parseFloat(document.getElementById('archerHeight').value); var armLength = parseFloat(document.getElementById('armLength').value); var age = parseInt(document.getElementById('age').value, 10); // Basic Draw Length Estimation (prioritize wingspan) var estimatedDrawLength = Math.round(armLength * 0.88); // General heuristic, adjust multiplier as needed // Base Draw Weight Calculation (simplified heuristic) var baseWeight = 0; if (estimatedDrawLength < 150) baseWeight = 25; else if (estimatedDrawLength < 165) baseWeight = 30; else if (estimatedDrawLength < 180) baseWeight = 35; else if (estimatedDrawLength < 195) baseWeight = 40; else baseWeight = 45; var adjustedWeight = baseWeight; // Adjustments based on Experience if (experienceLevel === 'beginner') { adjustedWeight = Math.max(20, adjustedWeight – 10); // Reduce for beginners } else if (experienceLevel === 'intermediate') { // Slight increase or keep base adjustedWeight = adjustedWeight; } else { // Advanced adjustedWeight = adjustedWeight + 10; // Increase for advanced } // Adjustments based on Intended Use if (intendedUse === 'hunting') { adjustedWeight = adjustedWeight + 10; // Increase for hunting } else if (intendedUse === 'target') { adjustedWeight = adjustedWeight + 5; // Slight increase for target } // Age factor (simplified) if (age 60) { adjustedWeight = Math.max(20, adjustedWeight – 5); } // Ensure weight is within a reasonable range and respects base for length adjustedWeight = Math.max(20, adjustedWeight); // Minimum 20 lbs adjustedWeight = Math.min(70, adjustedWeight); // Maximum 70 lbs // Re-evaluate draw length if it seems off based on height, but wingspan is primary if (estimatedDrawLength 170) estimatedDrawLength = Math.round(height * 0.85); if (estimatedDrawLength > 200) estimatedDrawLength = 200; // Cap draw length var finalWeight = adjustedWeight; var weightCategory = ""; var bowModelType = ""; if (finalWeight <= 35) { weightCategory = "Light"; bowModelType = "Beginner / Youth Bow"; } else if (finalWeight <= 50) { weightCategory = "Medium"; bowModelType = "Intermediate / Recreational Bow"; } else if (finalWeight <= 60) { weightCategory = "Medium-Heavy"; bowModelType = "Advanced / Hunting Bow"; } else { weightCategory = "Heavy"; bowModelType = "High-Performance / Serious Hunting Bow"; } document.getElementById('primary-result').textContent = finalWeight + " lbs"; document.getElementById('estimatedDrawLength').textContent = estimatedDrawLength; document.getElementById('bowWeightCategory').textContent = weightCategory; document.getElementById('bowModelType').textContent = bowModelType; updateChart(estimatedDrawLength, finalWeight); populateTable(finalWeight); } function resetCalculator() { document.getElementById('archerHeight').value = "175"; document.getElementById('armLength').value = "180"; document.getElementById('experienceLevel').value = "beginner"; document.getElementById('intendedUse').value = "recreation"; document.getElementById('age').value = "30"; document.getElementById('archerHeightError').textContent = ""; document.getElementById('archerHeightError').classList.remove('visible'); document.getElementById('armLengthError').textContent = ""; document.getElementById('armLengthError').classList.remove('visible'); document.getElementById('ageError').textContent = ""; document.getElementById('ageError').classList.remove('visible'); calculateDrawWeight(); // Recalculate with defaults } function copyResults() { var primaryResult = document.getElementById('primary-result').innerText; var drawLength = document.getElementById('estimatedDrawLength').innerText; var weightCategory = document.getElementById('bowWeightCategory').innerText; var bowModel = document.getElementById('bowModelType').innerText; var height = document.getElementById('archerHeight').value; var armLength = document.getElementById('armLength').value; var age = document.getElementById('age').value; var experience = document.getElementById('experienceLevel').options[document.getElementById('experienceLevel').selectedIndex].text; var use = document.getElementById('intendedUse').options[document.getElementById('intendedUse').selectedIndex].text; var resultsText = "— Draw Weight Calculation Results —\n\n"; resultsText += "Primary Result: " + primaryResult + "\n"; resultsText += "Estimated Draw Length: " + drawLength + " cm\n"; resultsText += "Bow Weight Category: " + weightCategory + "\n"; resultsText += "Suggested Bow Model Type: " + bowModel + "\n\n"; resultsText += "— Key Assumptions —\n"; resultsText += "Archer Height: " + height + " cm\n"; resultsText += "Wingspan: " + armLength + " cm\n"; resultsText += "Age: " + age + " years\n"; resultsText += "Experience Level: " + experience + "\n"; resultsText += "Intended Use: " + use + "\n"; try { navigator.clipboard.writeText(resultsText).then(function() { alert("Results copied to clipboard!"); }, function(err) { console.error('Async: Could not copy text: ', err); // Fallback for browsers that don't support clipboard API well var textArea = document.createElement("textarea"); textArea.value = resultsText; textArea.style.position = "fixed"; //avoid scrolling to bottom textArea.style.left = "-9999px"; textArea.style.top = "-9999px"; document.body.appendChild(textArea); 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Please copy manually."); } } function updateChart(currentDrawLength, currentDrawWeight) { var ctx = document.getElementById('drawWeightChart').getContext('2d'); var canvas = document.getElementById('drawWeightChart'); canvas.width = canvas.offsetWidth; // Adjust canvas size to its container canvas.height = canvas.offsetHeight; // Remove previous chart instance if it exists if (window.myDrawWeightChart instanceof Chart) { window.myDrawWeightChart.destroy(); } // Simplified data points for demonstration // Realistically, this requires a more complex simulation or lookup table var dataPoints = []; var minDrawLength = Math.max(130, currentDrawLength – 40); var maxDrawLength = Math.min(210, currentDrawLength + 40); var step = (maxDrawLength – minDrawLength) / 10; for (var dl = minDrawLength; dl <= maxDrawLength; dl += step) { // Simulate weight trend: Higher DL generally means higher weight, but with variations // This is a placeholder logic var simulatedWeight = 20 + (dl / 210) * 70; // Base weight based on draw length // Add experience/use adjustments (simplified) var expFactor = 1; var useFactor = 1; var experienceSelect = document.getElementById('experienceLevel'); var intendedUseSelect = document.getElementById('intendedUse'); if (experienceSelect.value === 'beginner') expFactor = 0.8; else if (experienceSelect.value === 'advanced') expFactor = 1.2; if (intendedUseSelect.value === 'hunting') useFactor = 1.15; else if (intendedUseSelect.value === 'target') useFactor = 1.05; simulatedWeight *= expFactor; simulatedWeight *= useFactor; simulatedWeight = Math.max(20, simulatedWeight); // Min weight simulatedWeight = Math.min(75, simulatedWeight); // Max weight dataPoints.push({ x: dl, y: simulatedWeight }); } // Ensure the current calculation is represented, possibly slightly adjusted for trend line var currentSimulatedWeightAtCurrentDL = 20 + (currentDrawLength / 210) * 70; var expFactor = 1; var useFactor = 1; if (experienceSelect.value === 'beginner') expFactor = 0.8; else if (experienceSelect.value === 'advanced') expFactor = 1.2; if (intendedUseSelect.value === 'hunting') useFactor = 1.15; else if (intendedUseSelect.value === 'target') useFactor = 1.05; currentSimulatedWeightAtCurrentDL *= expFactor * useFactor; currentSimulatedWeightAtCurrentDL = Math.max(20, currentSimulatedWeightAtCurrentDL); currentSimulatedWeightAtCurrentDL = Math.min(75, currentSimulatedWeightAtCurrentDL); window.myDrawWeightChart = new Chart(ctx, { type: 'line', data: { datasets: [{ label: 'Estimated Draw Weight (lbs)', data: dataPoints, borderColor: 'rgb(0, 74, 153)', tension: 0.1, fill: false, pointRadius: 4, pointBackgroundColor: 'rgb(0, 74, 153)' }, { // Add a marker for the calculated point label: 'Your Recommendation', data: [{ x: currentDrawLength, y: currentDrawWeight }], borderColor: 'rgb(40, 167, 69)', backgroundColor: 'rgb(40, 167, 69)', tension: 0, fill: false, pointRadius: 6, pointStyle: 'rectRot', showLine: false // Don't draw a line for this point }] }, options: { responsive: true, maintainAspectRatio: false, scales: { x: { type: 'linear', position: 'bottom', title: { display: true, labelString: 'Draw Length (cm)' } }, y: { title: { display: true, labelString: 'Draw Weight (lbs)' }, min: 15, // Visual minimum max: 80 // Visual maximum } }, plugins: { tooltip: { callbacks: { label: function(context) { var label = context.dataset.label || ''; if (label) { label += ': '; } if (context.parsed.y !== null) { label += Math.round(context.parsed.y) + ' lbs at ' + context.parsed.x + ' cm'; } return label; } } } } } }); } function populateTable(calculatedWeight) { var tableBody = document.getElementById('recommendationTableBody'); tableBody.innerHTML = ''; // Clear previous rows var recommendations = [ { weight: 25, category: "Light", user: "Beginner Adult/Youth", applications: "Recreational, Indoor Target" }, { weight: 30, category: "Light", user: "Beginner Adult", applications: "Recreational, Field Archery" }, { weight: 35, category: "Light-Medium", user: "Beginner/Intermediate", applications: "Target, Recreational" }, { weight: 40, category: "Medium", user: "Intermediate", applications: "Target, Light Game Hunting" }, { weight: 45, category: "Medium", user: "Intermediate", applications: "Target, Standard Game Hunting" }, { weight: 50, category: "Medium-Heavy", user: "Intermediate/Advanced", applications: "Hunting, Competitive Target" }, { weight: 55, category: "Heavy", user: "Advanced", applications: "Serious Hunting, Long Range Target" }, { weight: 60, category: "Heavy", user: "Advanced", applications: "Heavy Game Hunting, Competition" }, { weight: 65, category: "Very Heavy", user: "Experienced/Strong Archer", applications: "Specialized Hunting, Strength Training" } ]; // Sort recommendations to easily find relevant ones recommendations.sort(function(a, b) { return parseInt(a.weight) – parseInt(b.weight); }); var addedCount = 0; var maxRows = 5; // Show a few relevant rows recommendations.forEach(function(rec) { var row = tableBody.insertRow(); var cellWeight = row.insertCell(0); var cellCategory = row.insertCell(1); var cellUser = row.insertCell(2); var cellApps = row.insertCell(3); cellWeight.textContent = rec.weight + " lbs"; cellCategory.textContent = rec.category; cellUser.textContent = rec.user; cellApps.textContent = rec.applications; // Highlight the row closest to the calculated weight, or a few around it if (Math.abs(rec.weight – calculatedWeight) < 5 && addedCount < maxRows) { row.style.backgroundColor = '#d4edda'; // Light green highlight addedCount++; } else if (addedCount 15) { // row.style.display = 'none'; // Optionally hide less relevant rows } } }); } document.addEventListener('DOMContentLoaded', function() { // Add event listeners for real-time validation document.getElementById('archerHeight').addEventListener('input', function() { validateInput('archerHeight', 'archerHeightError', 120, 220); calculateDrawWeight(); }); document.getElementById('armLength').addEventListener('input', function() { validateInput('armLength', 'armLengthError', 130, 230); calculateDrawWeight(); }); document.getElementById('age').addEventListener('input', function() { validateInput('age', 'ageError', 8, 90, false); calculateDrawWeight(); }); document.getElementById('experienceLevel').addEventListener('change', calculateDrawWeight); document.getElementById('intendedUse').addEventListener('change', calculateDrawWeight); // Initial calculation on load calculateDrawWeight(); // Initialize chart – needs a placeholder canvas var canvas = document.getElementById('drawWeightChart'); var ctx = canvas.getContext('2d'); // Set initial size – Chart.js will handle responsiveness, but initial size matters canvas.width = canvas.offsetWidth; canvas.height = 300; // Default height window.myDrawWeightChart = new Chart(ctx, { type: 'line', // Placeholder type data: { datasets: [] }, options: { scales: { x: { title: { display: true, labelString: 'Draw Length (cm)' } }, y: { title: { display: true, labelString: 'Draw Weight (lbs)' } } }, responsive: true, maintainAspectRatio: false } }); // Handle FAQ toggles var faqItems = document.querySelectorAll('.faq-item strong'); faqItems.forEach(function(item) { item.addEventListener('click', function() { var content = this.nextElementSibling; var parentItem = this.parentElement; if (content.style.display === 'block') { content.style.display = 'none'; parentItem.classList.remove('active'); } else { content.style.display = 'block'; parentItem.classList.add('active'); } }); }); });

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