how to get first character of a string 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: get everything after the first character javascript

var val = 'asdasd:111122:123123123';
var response = val.substring(val.indexOf(":"));

alert(response); // ":111122:123123123"

Example 3: js get first letter of string

var x = 'some string';
alert(x.charAt(0)); // alerts 's'