Detect if a String is in camelCase Format in Javascript or Node.js

Detecting if a JavaScript string value is in camelCase is likely an edge case. Yet, it can be a valid check in your codebase. This tutorial shows you how to determine whether a given string is in camelCase format.

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  1. String Replace All Appearances
  2. Remove All Whitespace From a String in JavaScript
  3. Generate a Random ID or String in Node.js or JavaScript
  4. Remove Extra Spaces From a String in JavaScript or Node.js
  5. Remove Numbers From a String in JavaScript or Node.js
  6. Get the Part Before a Character in a String in JavaScript or Node.js
  7. Get the Part After a Character in a String in JavaScript or Node.js
  8. How to Check if a Value is a String in JavaScript or Node.js
  9. Check If a String Includes All Strings in JavaScript/Node.js/TypeScript
  10. Check if a Value is a String in JavaScript and Node.js
  11. Limit and Truncate a String to a Given Length in JavaScript and Node.js
  12. Split a String into a List of Characters in JavaScript and Node.js
  13. How to Generage a UUID in Node.js
  14. Reverse a String in JavaScript or Node.js
  15. Split a String into a List of Lines in JavaScript or Node.js
  16. Split a String into a List of Words in JavaScript or Node.js
  17. Detect if a String is in camelCase Format in Javascript or Node.js
  18. Check If a String Is in Lowercase in JavaScript or Node.js
  19. Check If a String is in Uppercase in JavaScript or Node.js
  20. Get the Part After First Occurrence in a String in JavaScript or Node.js
  21. Get the Part Before First Occurrence in a String in JavaScript or Node.js
  22. Get the Part Before Last Occurrence in a String in JavaScript or Node.js
  23. Get the Part After Last Occurrence in a String in JavaScript or Node.js
  24. How to Count Words in a File
  25. How to Shuffle the Characters of a String in JavaScript or Node.js
  26. Append Characters or Words to a String in JavaScript or Node.js
  27. Check if a String is Empty in JavaScript or Node.js
  28. Ensure a String Ends with a Given Character in JavaScript or Node.js
  29. Left-Trim Characters Off a String in JavaScript or Node.js
  30. Right-Trim Characters Off a String in JavaScript or Node.js
  31. Lowercase the First Character of a String in JavaScript or Node.js
  32. Uppercase the First Character of a String in JavaScript or Node.js
  33. Prepend Characters or Words to a String in JavaScript or Node.js
  34. Check if a String is a Number
  35. Convert a String to Buffer

Detect if a String Value is in camelCase

You should use the @supercharge/strings package to determine whether a given string is in camelCase format.

I’m the maintainer @supercharge/strings package which provides convenient string utilities. It comes a useful Str#isCamel() method detecting whether a given string value is in camelCase format:

const Str = require('@supercharge/strings')

Str('superchargeIsAwesome').isCamel()  
// true

Str('Supercharge').isCamel()  
// false

The implementation follows a basic idea: compare the given value against its camelCase’d version. The comparison returns true if both strings are identical and false otherwise.

Creating the camelCase version of a string value follows this idea:

  • replace symbols (like dashes and underscores) with a space
  • uppercase the first letter of each word
  • remove all spaces from the string
  • lowercase the first character

That’s it!


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