🚀 Performance Optimization

Lazy Loading

// Load plugin on user interaction
document.addEventListener('click', function loadAccessibilityPlugin() {
 if (!window.AccessibilityPlugin) {
 const script = document.createElement('script');
 script.src = 'path/to/accessibility-plugin.js';
 document.body.appendChild(script);
 }
 document.removeEventListener('click', loadAccessibilityPlugin);
}, { once: true });

Conditional Loading

// Load only if user prefers reduced motion
if (window.matchMedia('(prefers-reduced-motion: reduce)').matches) {
 // Load accessibility plugin
}

CDN Caching

<!-- Use specific version for better caching -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/website-accessibility-filter@1.0.0/accessibility-plugin.css">
<script src="https://cdn.jsdelivr.net/npm/website-accessibility-filter@1.0.0/accessibility-plugin.js"></script>

🎯 Programmatic Control

Event Listeners

// Monitor settings changes
function monitorAccessibilityChanges() {
 let lastSettings = AccessibilityPlugin.getSettings();
 
 setInterval(function() {
 const currentSettings = AccessibilityPlugin.getSettings();
 if (JSON.stringify(currentSettings) !== JSON.stringify(lastSettings)) {
 console.log('Settings changed:', currentSettings);
 lastSettings = currentSettings;
 // Do something when settings change
 }
 }, 1000);
}
// Start monitoring
monitorAccessibilityChanges();

Custom Triggers

// Custom keyboard shortcut
document.addEventListener('keydown', function(e) {
 // Ctrl + Shift + A to toggle accessibility panel
 if (e.ctrlKey && e.shiftKey && e.key === 'A') {
 e.preventDefault();
 AccessibilityPlugin.toggle();
 }
 
 // Ctrl + Shift + F to increase font size
 if (e.ctrlKey && e.shiftKey && e.key === 'F') {
 e.preventDefault();
 const current = AccessibilityPlugin.getSettings().fontSize;
 const sizes = [75, 100, 125, 150, 200];
 const next = sizes[sizes.indexOf(current) + 1] || sizes[0];
 AccessibilityPlugin.setFontSize(next);
 }
});

🔄 Integration Patterns

React Integration

import { useEffect } from 'react';
function AccessibilityWidget() {
 useEffect(() => {
 // Load plugin
 const script = document.createElement('script');
 script.src = 'path/to/accessibility-plugin.js';
 document.body.appendChild(script);
 
 return () => {
 // Cleanup if needed
 };
 }, []);
 
 return null; // Widget renders itself
}

Vue Integration

<template>
 <div>
 <!-- Your content -->
 </div>
</template>
<script>
export default {
 mounted() {
 // Load plugin
 const script = document.createElement('script');
 script.src = 'path/to/accessibility-plugin.js';
 document.body.appendChild(script);
 }
}
</script>

Angular Integration

import { Component, OnInit } from '@angular/core';
@Component({
 selector: 'app-root',
 template: '<div>Your content</div>'
})
export class AppComponent implements OnInit {
 ngOnInit() {
 // Load plugin
 const script = document.createElement('script');
 script.src = 'path/to/accessibility-plugin.js';
 document.body.appendChild(script);
 }
}

🎨 Advanced Styling

CSS Variables

:root {
 --accessibility-primary: #0066cc;
 --accessibility-primary-hover: #0052a3;
 --accessibility-panel-bg: #ffffff;
}
.accessibility-toggle-btn {
 background: var(--accessibility-primary) !important;
}
.accessibility-toggle-btn:hover {
 background: var(--accessibility-primary-hover) !important;
}

Dynamic Theming

// Dark mode at night
const hour = new Date().getHours();
if (hour >= 18 || hour < 6) {
 AccessibilityPlugin.setContrast('dark');
}
// Match system preference
if (window.matchMedia('(prefers-color-scheme: dark)').matches) {
 AccessibilityPlugin.setContrast('dark');
}

📊 Analytics Integration

Track Usage

// Track feature usage
function trackAccessibilityUsage() {
 const settings = AccessibilityPlugin.getSettings();
 
 // Send to analytics
 if (typeof gtag !== 'undefined') {
 gtag('event', 'accessibility_settings', {
 'font_size': settings.fontSize,
 'contrast': settings.contrast,
 'color_blindness': settings.colorBlindness
 });
 }
 
 // Or use your analytics
 // analytics.track('Accessibility Settings Changed', settings);
}
// Monitor changes
let lastSettings = {};
setInterval(function() {
 const current = AccessibilityPlugin.getSettings();
 if (JSON.stringify(current) !== JSON.stringify(lastSettings)) {
 trackAccessibilityUsage();
 lastSettings = current;
 }
}, 5000);

🔐 Security Considerations

Content Security Policy

Content-Security-Policy: 
 script-src 'self' https://unpkg.com https://cdn.jsdelivr.net;
 style-src 'self' https://unpkg.com https://cdn.jsdelivr.net;

Sanitization

🎯 Advanced Configuration

Dynamic Configuration

// Generate config based on user or page
const config = {
 position: getUserPreference('widget_position') || 'bottom-right',
 fontSize: getPageDefaultFontSize() || 100,
 contrast: detectPreferredContrast() || 'normal'
};
// Create config script
const configScript = document.createElement('script');
configScript.textContent = `var AccessibilityConfig = ${JSON.stringify(config)};`;
document.head.appendChild(configScript);

Multi-Language Support

// Language-specific configuration
const lang = document.documentElement.lang || 'en';
const translations = {
 en: { buttonText: 'Accessibility' },
 es: { buttonText: 'Accesibilidad' },
 fr: { buttonText: 'Accessibilité' }
};
var AccessibilityConfig = {
 buttonText: translations[lang]?.buttonText || 'Accessibility'
};

🔧 Custom Features

Add Custom Controls

// Wait for plugin to load
window.addEventListener('load', function() {
 setTimeout(function() {
 if (window.AccessibilityPlugin) {
 // Add custom button to panel
 const panel = document.querySelector('.accessibility-panel-content');
 if (panel) {
 const customBtn = document.createElement('button');
 customBtn.textContent = 'Custom Feature';
 customBtn.onclick = function() {
 // Your custom functionality
 };
 panel.appendChild(customBtn);
 }
 }
 }, 1000);
});

Custom Accessibility Features

// Custom high contrast mode
function applyCustomHighContrast() {
 document.body.style.filter = 'contrast(1.5) brightness(1.1)';
}
// Custom font smoothing
function applyFontSmoothing() {
 document.body.style.webkitFontSmoothing = 'antialiased';
 document.body.style.mozOsxFontSmoothing = 'grayscale';
}

📱 Mobile Optimization

Touch-Friendly Adjustments

/* Larger touch targets on mobile */
@media (max-width: 768px) {
 .accessibility-toggle-btn {
 min-height: 44px; /* iOS recommended */
 min-width: 44px;
 }
}

Mobile-Specific Features

// Detect mobile and adjust settings
if (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|OperaMini/i.test(navigator.userAgent)) {
 // Mobile-specific configuration
 var AccessibilityConfig = {
 fontSize: 125, // Larger default on mobile
 position: 'bottom-right'
 };
}

🎨 Advanced Theming

Theme Switcher

const themes = {
 light: {
 button: '#0066cc',
 panel: '#ffffff'
 },
 dark: {
 button: '#1f2937',
 panel: '#1f2937'
 },
 purple: {
 button: '#8b5cf6',
 panel: '#ffffff'
 }
};
function applyTheme(themeName) {
 const theme = themes[themeName];
 const style = document.createElement('style');
 style.textContent = `
 .accessibility-toggle-btn { background: ${theme.button} !important; }
 .accessibility-panel { background: ${theme.panel} !important; }
 `;
 document.head.appendChild(style);
}

🔄 State Management

Save/Load State

// Save state to server
function saveStateToServer() {
 const settings = AccessibilityPlugin.getSettings();
 fetch('/api/user/preferences', {
 method: 'POST',
 body: JSON.stringify(settings)
 });
}
// Load state from server
function loadStateFromServer() {
 fetch('/api/user/preferences')
 .then(res => res.json())
 .then(settings => {
 AccessibilityPlugin.setFontSize(settings.fontSize);
 AccessibilityPlugin.setContrast(settings.contrast);
 });
}

🎯 Best Practices

📚 Related Pages

🆘 Need Help?