In this article, quickly we see how to remove the last character of string in JavaScript using the slice() method and how to use it for more use cases like removing a particular part of the string as substring.

Remove last character of a String

let strVar = 'Hello Poopcoder!';
let editedStr = strVar.slice(0,-1); //'Hello Poopcoder'

Usage

The slice() method extracts parts of a string and returns the extracted parts in a new string. Here we are passing two parameters. Using these parameters we can specify the part of string want to extract.

Syntax

string.slice(start, end)

More Examples

Example 1:
Extracts whole word.

var str = 'Hello Poopcoder!';
var res = str.slice(0); //'Hello Poopcoder!'

Example 2:
Extracts from index 3 and to the end.

var str = 'Hello Poopcoder!';
var res = str.slice(3); //'lo Poopcoder!'

Example 3:
Extract the characters from position 3 to 8.

var str = "Hello Poopcoder!";
var res = str.slice(3, 8); // 'lo Po'

Example 4:
Extract only the last character.

var str = "Hello Poopcoder!";
var res = str.slice(-1); // '!'

Example 5:
Extract from the character index of and remove the last 3 character.

 var str = "Hello Poopcoder!"; 
 var res = str.slice(3,-3); // 'lo Poopcod'