JavaScript: Convert a string to kebab case

JavaScript fundamental (ES6 Syntax): Exercise-123 with Solution

String to Kebab Case

Write a JavaScript program to convert a string to kebab case.

Note: Break the string into words and combine them adding - as a separator, using a regexp.

• Use String.prototype.match() to break the string into words using an appropriate regexp.
• Use Array.prototype.map(), Array.prototype.join() and String.prototype.toLowerCase() to combine them, adding - as a separator.

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2

// Define the 'toKebabCase' function.
const toKebabCase = str =>
  str &&
  str
    .match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g)
    .map(x => x.toLowerCase())
    .join('-');

// Test the 'toKebabCase' function with sample inputs.
console.log(toKebabCase('camelCase')); // Output: camel-case
console.log(toKebabCase('some text')); // Output: some-text
console.log(toKebabCase('some-mixed_string With spaces_underscores-and-hyphens')); // Output: some-mixed-string-with-spaces-underscores-and-hyphens
console.log(toKebabCase('AllThe-small Things')); // Output: all-the-small-things
console.log(toKebabCase('IAmListeningToFMWhileLoadingDifferentURLOnMyBrowserAndAlsoEditingSomeXMLAndHTML')); // Output: i-am-listening-to-fm-while-loading-different-url-on-my-browser-and-also-editing-some-xml-and-html

Output:

camel-case
some-text
some-mixed-string-with-spaces-underscores-and-hyphens
all-the-small-things
i-am-listening-to-fm-while-loading-different-url-on-my-browser-and-also-editing-some-xml-and-html

Visual Presentation:

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-123-1 by w3resource (@w3resource) on CodePen.

For more Practice: Solve these Related Problems:

• Write a JavaScript program that converts a given string into kebab-case by replacing spaces and punctuation with hyphens.
• Write a JavaScript function that transforms camelCase or PascalCase strings into lowercase kebab-case.
• Write a JavaScript program that normalizes and lowercases a string, then replaces non-word characters with hyphens.

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