get the index of the last letter of a substring js code example

Example 1: javascript get last character in string

var hello = "Hello World";
var lastCharOfHello=hello.slice(-1);//d

Example 2: get last letter of string javascript

// Get last n characters from string
var name = 'Shareek';
var new_str = name.substr(-5); // new_str = 'areek'