how to get the first 2 characters in a string in javascript code example

Example 1: how to get the first character of a string in javascript

let str = 'John Wick'
let firstChar = str.charAt(0) 
console.log(firstChar); // "J"

Example 2: javascript delete first character in string

var oldStr ="Hello";
var newStr = oldStr.substring(1); //remove first character "ello"