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.

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

Video Tutorial

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

How to Change Image on Hover with JavaScript How to Disable Button by Class Name in JavaScript How To Change Image Size with JavaScript How to change Image opacity with JavaScript How to Change image src on click with JavaScript How to get the lang attribute value in JavaScript How to Get attribute Value using JavaScript How To Check if Attribute Exists or not with JavaScript How To Count number of links on Page with JavaScript How To Scroll Page to Bottom using JavaScript How To Detect Shift Key Press with JavaScript Change Text Color On Hover with JavaScript Hide and Show div using JavaScript Get Button text with JavaScript Get textarea value with JavaScript Get table row Height with JavaScript Auto Increase width of input field with JavaScript Set Textarea maxLength with JavaScript Set Textarea Value with JavaScript JavaScript Count list items JavaScript set input field value Count Button Clicks with JavaScript Scroll Page to the Top on Click with JavaScript Change id of Element with JavaScript JavaScript Change li Text Color