JavaScript Get Length of Text In Textarea

In this tutorial we will learn how to Get Length of Text In Textarea using JavaScript. HTML DOM getElementById() method, JavaScript length property and JavaScript value property is used for this purpose.

Table of Contents

• HTML Code
• JavaScript Code
• getElementById Method
• HTML Dom value property
• HTML Dom length property
• Demo
• Video Tutorial
• More JavaScript Tutorials

HTML Code

HTML Code is given below, in this code we have a textarea tag and a button tag which will execute a JavaScript function to Get Length of Text In Textarea.

<textarea id="text"></textarea>
<br>    
<button onclick="getLength()">Get Length</button>

JavaScript Code

Take a look at the JavaScript code, the HTML DOM getElementById() method, HTML Dom value property and HTML Dom length property are used in this code.

Main function getLength() is executed when the HTML button is clicked.

<script>
function getLength()
{
   var textArea = document.getElementById('text');
   var length = textArea.value.length;
   alert(length);    
}
</script>

getElementById() Method

HTML DOM getElementById() Method is used to select or target HTML element by it's id.

HTML Dom value property

HTML Dom value property sets or returns the text of the textarea tag.

HTML Dom length property

HTML Dom length property is used to get the length of the string. In this example it will return the length of the text of the textarea tag.

Demo

Check Demo

Video Tutorial

Watch video tutorial on Get Length of Text In Textarea with JavaScript.