javascript capitalize words

1//capitalize only the first letter of the string. 
2function capitalizeFirstLetter(string) {
3    return string.charAt(0).toUpperCase() + string.slice(1);
4}
5//capitalize all words of a string. 
6function capitalizeWords(string) {
7    return string.replace(/(?:^|\s)\S/g, function(a) { return a.toUpperCase(); });
8};

1function capitalizeName(name) {
2  return name.replace(/\b(\w)/g, s => s.toUpperCase());
3}
4
5

1//Updated 
2//capitalize only the first letter of the string. 
3function capitalizeFirstLetter(string) {
4    return string.charAt(0).toUpperCase() + string.slice(1);
5}
6//capitalize all words of a string. 
7function capitalizeWords(string) {
8    return string.replace(/(?:^|\s)\S/g, function(a) { return a.toUpperCase(); });
9};

1myString = 'the quick green alligator...';
2myString.replace(/^\w/, (c) => c.toUpperCase());
3
4myString = '    the quick green alligator...';
5myString.trim().replace(/^\w/, (c) => c.toUpperCase());

1const capitalizeFirstLetter(string) => 
2	string.charAt(0).toUpperCase() + string.slice(1).toLowerCase()

1function capitalize(paragraph) {
2  const paragraphCleaned = paragraph.replace(/\s{2,}/, " ")
3  const paragraphSplitted = paragraphCleaned.split(" ")
4  const capitalized = paragraphSplitted.map((word) => word.charAt(0).toUpperCase() + word.slice(1))
5  return capitalized.join(" ")
6}