In this article I will explain with an example, how to disable or prevent CUT, COPY and PASTE operations in TextBox or TextArea using JavaScript.
Cut, Copy and Paste operations in TextBox or TextArea can be performed using CTRL button or on Mouse Right Click.
This article will illustrate how to disable Cut, Copy and Paste operations using both CTRL button and Mouse Right Click using JavaScript.
Disable (Prevent) Cut, Copy and Paste using JavaScript
The following HTML Markup consists of HTML TextBox and TextArea which are assigned with CssClass disabled.
Inside the window onload event handler, all the elements having the Css Class disabled are referenced and for each element, Cut, Copy and Paste event handlers are attached using JavaScript.
Inside the Cut, Copy and Paste event handlers, the event is cancelled using the preventDefault function.
Now whenever user tries to perform Cut, Copy and Paste operations, the operation is not performed.
The best part of this snippet it not only disables the Cut, Copy and Paste operations with CTRL button but also disables it on Mouse Right Click without disabling Right Click functionality.
<html xmlns="">
    <script type="text/javascript">
        window.onload = function () {
            var controls = document.getElementsByTagName("*");
            var regEx = new RegExp("(^| )disable( |$)");
            for (var i = 0; i < controls.length; i++) {
                if (regEx.test(controls[i].className)) {
                    AttachEvent(controls[i], "copy");
                    AttachEvent(controls[i], "paste");
                    AttachEvent(controls[i], "cut");
        function AttachEvent(control, eventName) {
            if (control.addEventListener) {
                control.addEventListener(eventName, function (e) { e.preventDefault(); }, false);
            } else if (control.attachEvent) {
                control.attachEvent('on' + eventName, function () { return false; });
    <form id="form1" runat="server">
       <input type="text" class="disable" /><br />
       <br />
       <textarea class="disable" rows="5" cols="5"></textarea>
Disable (Prevent) Cut, Copy and Paste using JavaScript
Browser Compatibility

The above code has been tested in the following browsers.

Internet Explorer  FireFox  Chrome  Safari  Opera 

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