HTML DOM Textarea maxLength Property

The HTML DOM Textarea maxLength property returns and modify the value of maxLength attribute of a text area element in an HTML document.


Following is the syntax −

1. Returning maxLength


2. Modifying maxLength

object.maxLength = “number”

Let us see an example of HTML DOM Textarea maxLength Property:


Live Demo

<!DOCTYPE html>
   body {
      color: #000;
      height: 100vh;
   .btn {
      background: #db133a;
      border: none;
      height: 2rem;
      border-radius: 2px;
      width: 40%;
      display: block;
      color: #fff;
      outline: none;
      cursor: pointer;
   .show {
      font-size: 1.5rem;
      margin: 1rem 0;
<h1>DOM Textarea maxLength Property Demo</h1>
<textarea maxlength="50">Hi! I'm a text area element with some dummy text.</textarea>
<button onclick="set()" class="btn">Show Maximum Length</button>
<div class="show"></div>
   function set() {
      document.querySelector('.show').innerHTML = 'The maximum number of characters allowed in the above text area is ' + document.querySelector("textarea").maxLength;


Click on “Show Maximum Length” button to display the value of maxLength attribute of the textarea element.