Javascript oninput Event Tutorial to Get Realtime Typed Value of Input Field & TextArea

Welcome folks today in this blog post we will be using the oninput event in html5 input field to get the live preview of what the user is typing and showing it inside the browser in javascript. All the full source code of the application is shown below.

Get Started

In order to get started you need to make an index.html file and copy paste the following code

index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <input id="name" oninput="preview()" type="text" placeholder="Enter Name">
    <div id="preview"></div>
</body>
<script>
let preview = () => {
    document.getElementById('preview').innerHTML = document.getElementById('name').value
}
</script>
</html>

<!DOCTYPE html>

<head>

<title>Document</title>

</head>

<body>

</body>

let preview = () => {

document.getElementById('preview').innerHTML = document.getElementById('name').value

}

</script>

</html>

As you can see we have the simple input field to allow the user to enter the name and we have attached the oninput event handler where we are executing the preview() method to show the live preview of what user is typing. And we have the div section where we display the preview of the input field. Inside the javascript code we are changing the preview to the input field value.