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JavaScript: Check for Empty, Null, or Undefined Strings

Learn multiple methods to check for empty, undefined, or null strings in JavaScript. Discover best practices, utility functions, and practical examples for robust string validation in your web applications.

  • #empty-string-handling
  • #form-validation
  • #javascript-best-practices
  • #javascript-string-validation
  • #null-undefined-check
  • #utility-functions
10/20/2025, 06:33 PM