Answers for "string from to"

javascript get first 10 characters of string

var str = "Hello world That is reallly neat!";
var res = str.substring(0, 5);//get first 5 chars

substring javascript

var str = "Hello world!";
var res = str.substring(1, 4); //ell

str.substring if 2 letters

public String firstTwo(String str) {
    return str.length() < 2 ? str : str.substring(0, 2);
}