1var hello = "Hello World";
2var lastCharOfHello=hello.slice(-1);//d

1var str = "Hello";
2var newString = str.substring(0, str.length - 1); //newString = Hell

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

1'abc'.slice(-2);

1var lastChar = myString[myString.length -1];

1// Get last n characters from string
2var name = 'Shareek';
3var new_str = name.substr(-5); // new_str = 'areek'