How to Remove Last 10 Characters from String in Javascript

In this tutorial, you will learn how to remove last 10 characters from string in javascript. The last 10 characters in a sentence generally contains only letters from A to Z. But in some scenarios, it might contain numbers as well as special characters. Figuring out the location of last 10 characters does require a little bit of effort.

There are numerous ways to remove the last 10 characters from a string. A string consists of multiple characters and these characters in a string have a 0-based index. To get the rest of the string after the removal of the last 10 characters, we can make use of the substring() method.

The length property of a string returns the number of total characters in that string. To get the index of the tenth last character in the string, we just need to subtract 10 from the length.

In the following example, we have one global variable that holds a string. Upon click of a button, we will remove the last 10 characters from the string and display the result on the screen.  Please have a look over the code example and the steps given below.


  • We have 3 elements in the HTML file (div, button, and h1). The div element is just a wrapper for the rest of the elements.
  • The innerText for the button element is “Get” and for the h1 element, it is “Result”.
  • We have done some basic styling using CSS and added the link to our style.css stylesheet inside the head element.
  • We have also included our javascript file script.js with a script tag at the bottom.
<!DOCTYPE html>
<html lang="en">

  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <link rel="stylesheet" href="style.css">


  <div class="container">    

  <script src="script.js"></script>

.container {        
    text-align: center;

button {
  margin-top: 10px;
  padding: 10px 20px;


  • We have selected the button element and h1 element using the document.querySelector() method and stored them in btnGet and output variables respectively.
  • We have attached a click event listener to the button element.
  • We have a global variable myString which holds a string as its value.
  • In the event handler function, we are calling the substring() method and passing 2 parameters, the index of the second last character and 0 which is the index of the first character. To get the index of the tenth last character, we just need to subtract 10 from the string length. Finally, we will get a new string except for the last 10 characters. The new string is stored in the result variable.
  • We are displaying the result in the h1 element using the innerText property.
let btnGet = document.querySelector("button");
let output = document.querySelector("h1");

let myString = "Hello world 123";

btnGet.addEventListener("click", () => {  
  let result = myString.substring(myString.length - 10, 0);
  output.innerText = result;