String minúsculo JavaScript
var str = "My Big Boy!"
var res = str.toLowerCase(); //res is "my big boy!"
Grepper
var str = "My Big Boy!"
var res = str.toLowerCase(); //res is "my big boy!"//capitalize only the first letter of the string.
function capitalizeFirstLetter(string) {
return string.charAt(0).toUpperCase() + string.slice(1);
}
//capitalize all words of a string.
function capitalizeWords(string) {
return string.replace(/(?:^|\s)\S/g, function(a) { return a.toUpperCase(); });
};var str = "Hello World!";
var res = str.toUpperCase(); //HELLO WORLD!const name = 'flavio'
const nameCapitalized = name.charAt(0).toUpperCase() + name.slice(1)
let str = "Hello World!";
let res = str.toUpperCase();
console.log(res) //HELLO WORLD!var string = "A string";
var upperCase = string.toUpperCase();
console.log(upperCase); // -> A STRING
var lowerCase = string.toLowerCase();
console.log(lowerCase); // -> a string