How to prevent pasting value outside of spreadjs (data privacy) worksheet?

Posted by: roywebweb123 on 29 January 2021, 8:44 am EST

  • Posted 29 January 2021, 8:44 am EST

    How to prevent a user from copying a value on spreadjs and pasting outside of spreadjs?

  • Replied 2 February 2021, 7:11 pm EST


    Apologies for the delayed response. For this, you need to disable the cut, Copy paste from the Global keys and also from the CellType. Please refer to the following code snippet and attached sample that demonstrates the same.

    GC.Spread.Sheets.CellTypes.Text.prototype.isReservedKey = function (
    ) {
    //cell type handle ctrl c,v,x key by itself(doesnt call the copy paste cut actions)
    return (
    (e.keyCode === 67 || e.keyCode === 88 || e.keyCode === 86) &&
    e.ctrlKey &&
    !e.shiftKey &&
    oncopy="return false"
    oncut="return false"
    onpaste="return false"


  • Replied 13 February 2021, 8:47 am EST

    Hi Avinash, thanks for the response. I try to convert your solution into React.js, but I unable to get it to work.
  • Replied 14 February 2021, 11:46 pm EST


    As a better alternative, you could just remove shortcut bindings for copy and paste command. Please refer to the following code snippet and the sample demonstrating the same:
    const commandManger = spread.commandManager();
    // disable copy
    commandManger.setShortcutKey(null, 67, true, false, false, false);
    // disable cut
    commandManger.setShortcutKey(null, 88, true, false, false, false);

  • Replied 16 February 2021, 1:31 pm EST

    Hi Sharad, thanks for the response. I try your code snippet and sample on, but it not working. I can still copy and cut.
  • Replied 16 February 2021, 9:52 pm EST


    Please try by registering an empty command as demonstrated in the following sample and let me know if the issue persists for you:
  • Replied 17 February 2021, 11:59 am EST

    It still not working for me. I think it because I using Mac. I try it on a window pc and it work.
  • Replied 17 February 2021, 4:37 pm EST

    For Mac, you need to pass the meta parameter as true in setShortcutKey. Please refer to the following code snippet and attached updated sample that demonstrates the same.

    // disable copy
    commandManger.setShortcutKey("emptyCommand", 67, false, false, false, true);
    // disable cut


    API reference:
  • Replied 22 February 2021, 12:02 pm EST

    Thank Sharad, I got it to work.

    Is it possible to prevent the user from copying a value in spreadjs and pasting that value on a different website without disabling copy or cut?

    The user should be able to use the copy and cut shortcut keys, but they cannot paste the value on a different website.
  • Replied 22 February 2021, 7:31 pm EST


    For this, you may set the contextMenu cut, copy, paste commands to the shortcut keys. Please refer to the following updated sample that demonstrates the same.



  • Replied 23 February 2021, 12:26 pm EST

    Thanks Avinash

    I found a bug where a user can still copy and paste a value to other website by double clicking a cell, highlight the text, and use copy shortcut key. Is there a way to prevent this?

  • Replied 23 February 2021, 4:16 pm EST


    This is the expected behavior from SJS. Inside the Edit mode, actions like copy, paste, cut, ctrl+a are not handled by SJS instead of that global events are performed. For handling this case you override the isReservedKey method. Please refer to the following code snippet and attached updated sample that demonstrates the same.

    let old = GC.Spread.Sheets.CellTypes.Text.prototype.isReservedKey;
    GC.Spread.Sheets.CellTypes.Text.prototype.isReservedKey = function(e, context) {
    //cell type handle ctrl+c,v,x key by itself

    if (context.isEditing) {
    return (
    (e.keyCode === GC.Spread.Commands.Key.c ||
    e.keyCode === GC.Spread.Commands.Key.v ||
    e.keyCode === GC.Spread.Commands.Key.x) &&
    e.metakey &&
    (!e.shiftKey && !e.altKey)
    } else {
    old.apply(this, arguments);


  • Marked as Answer

    Replied 25 February 2021, 3:18 am EST

    Avinash, thank you so much for the detailed explanation, you save the day!

    I have been trying to get the same thing to work.

    I am glad my team chose spreadjs over other library. Experts from the support team like Avinash really make a huge difference.

Need extra support?

Upgrade your support plan and get personal unlimited phone support with our customer engagement team

Learn More

Forum Channels