How to disable or enable a form element using jQuery

232 views 5 months ago jQuery

Use the jQuery `prop()` method

You can simply use the jQuery prop() method to disable or enable form elements or controls like <input>, <select>, <textarea>, etc. dynamically using jQuery.

The prop() method require jQuery 1.6 and above. Let's see how this works:

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Disable or Enable an Input with jQuery</title>
<style>
    label {
        display: block;
        margin: 10px 0;
    }
</style>
<script src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
<script>
    $(document).ready(function(){
        $('form input[type="submit"]').prop("disabled", true);
        $(".agree").click(function(){
            if($(this).prop("checked") == true){
                $('form input[type="submit"]').prop("disabled", false);
            }
            else if($(this).prop("checked") == false){
                $('form input[type="submit"]').prop("disabled", true);
            }
        });
    });
</script>
</head>
<body>
    <form>
        <label>Name: <input type="text" name="username"></label>
        <label>Email: <input type="email" name="email"></label>
        <label><input type="checkbox" class="agree"> I agree to terms and conditions.</label>
        <input type="submit" value="Submit">
    </form>
</body>
</html>

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