how to get last 4 characters in a string in javascript code example

Example 1: javascript get last character in string

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

Example 2: javascript remove last character from string

var str = "Hello";
var newString = str.substring(0, str.length - 1); //newString = Hell

Example 3: javascript get last n characters of string

'abc'.slice(-1); // c

Example 4: get last letter of string javascript

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