Cadena en minúscula de 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!"var str = "Hello World!";
var res = str.toLowerCase();var str = "ExaMple";
var res = str.toLowerCase();
output res -> "example"const normalString = "Hello World!"
console.log(normalString) // Output: Hello World!
const lowerString = normalString.toLowerCase()
console.log(lowerString) // Output: hello world!