how to get a character from a string in javascript code example

Example 1: get string after character javascript

const str = '01-01-2020';

// get everything after first dash
const slug = str.substring(str.indexOf('-') + 1); // 01-2020

// get everything after last dash 
const slug = str.split('-').pop(); // 2020

Example 2: javascript string return character

var str = "HELLO WORLD";
var res = str.charAt(0);