Lowercase all letters in a string except the first letter and capitalize first letter of a string? - JavaScript
function upperCaseFirstLetter(string) {
return string.charAt(0).toUpperCase() + string.slice(1);
}
function lowerCaseAllWordsExceptFirstLetters(string) {
return string.replace(/\S*/g, function (word) {
return word.charAt(0) + word.slice(1).toLowerCase();
});
}
var input = 'hello World, whatS up?';
var desiredOutput = upperCaseFirstLetter(lowerCaseAllWordsExceptFirstLetters(input));
console.log(desiredOutput);Based on:
How do I make the first letter of a string uppercase in JavaScript?
and
How to capitalize first letter of each word, like a 2-word city?
word = word.charAt(0) + word.substring(1).toLowerCase();
I was trying to do the same and I found a shorter way to do it:
function formatString(str) {
return str
.replace(/(\B)[^ ]*/g, match => (match.toLowerCase()))
.replace(/^[^ ]/g, match => (match.toUpperCase()));
}
var text = "aaa BBB CCC";
console.log(formatString(text));