Last updated: July 20, 2021
Converts a given string to title case.
const toTitleCase = str => str .toLowerCase() .match(/[a-z](?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g) .map(word => word.charAt(0).toUpperCase() + word.slice(1)) .join(' ');
- We create a function the accepts a string as its parameter
- We then take the string and transform all characters to lowercase
- From the lowercased string, we break the string into an array of words based on the regular expressions we passed from the match function
- We map through each word from the array wherein we take the "index zero" or the first letter of every word and converts it to uppercase
- We take the converted uppercase letter and append it to the sliced word starting from "index one" or the second letter of every word
- The map returns a new array of uppercased words so we just need to join all the words from the array by adding space to create a sentence
str - the word or sentence in a string format
Returns a title-cased string.
You can pass a word or sentence as an argument:
toTitleCase('The world is your oyster'); // Result: "The World Is Your Oyster"
You can pass an all Caps word or sentence as an argument:
toTitleCase('CHANSU WA JIBUN DE TSUKURU MONO'); // Result: "Chansu Wa Jibun De Tsukuru Mono"
You can pass an underscored string as an argument:
toTitleCase('sample_database_field_name'); // Result: "Sample Database Field Name"
You can pass a hyphenated string as an argument:
toTitleCase('sample-variable-name'); // Result: "Sample Variable Name"
You can pass a mixed string with spaces, uppercase, underscores, and hyphens as an argument:
toTitleCase('sample-mixed_string with spaces UPPERCASE_underscores-and-hyphens'); // Result: "Sample Mixed String With Spaces Uppercase Underscores And Hyphens"