JavaScript obtenga los primeros 10 caracteres de cadena
var str = "Hello world That is reallly neat!";
var res = str.substring(0, 5);//get first 5 chars
Grepper
var str = "Hello world That is reallly neat!";
var res = str.substring(0, 5);//get first 5 charsconst string = "0123456789";
console.log(string.slice(0, 2)); // "01"
console.log(string.slice(0, 8)); // "01234567"
console.log(string.slice(3, 7)); // "3456"const string = "0123456789";
console.log(string.slice(0, 3)); // "01"
console.log(string.slice(0, 8)); // "01234567"
console.log(string.slice(3, 7));