Required validation in Java Script

<!DOCTYPE html>

    <title>encode and decode</title>
    <script type="text/javascript" >
        function validation() {
            var val = document.getElementById('in');
            if (val.value.length == 0) {

<h1>Example of required field validation control</h1>
<input type="text" name="gt" value="" id="in" />
<button onclick="validation();">perform validation</button>

Code generate the following output

Required validation in Java Script


Popular posts from this blog

difference between structure and union in C Language

Difference between Linear search and Binary Search in c language

Difference between static and dynamic websites