Text Processing in JavaScript

// Remove extra spaces
text.replace(/\s+/g, ' ').trim()

// Remove HTML tags
html.replace(/<[^>]*>/g, '')

// Extract URLs from text
text.match(/https?:\/\/[^\s]+/g)

// Convert camelCase to kebab-case
"camelCaseString".replace(/([A-Z])/g, '-$1').toLowerCase()
// "camel-case-string"

// Convert snake_case to camelCase
"snake_case_string".replace(/_([a-z])/g, (_, letter) => letter.toUpperCase())
// "snakeCaseString"

// Find all hashtags
text.match(/#\w+/g)

// Find all mentions
text.match(/@[\w.]+/g)

// Extract numbers with units
"Height: 180cm, Weight: 75kg".match(/\d+(?:cm|kg|m|ft)/g)
// ["180cm", "75kg"]

// Remove duplicate words
text.replace(/\b(\w+)\s+\1\b/gi, '$1')

// Truncate to word boundary
text.substring(0, 100).replace(/\s\w+$/, '...')

// Convert markdown bold to HTML
text.replace(/\*\*(.+?)\*\*/g, '<strong>$1</strong>')