title: Zettelstore Base JavaScript
role: configuration
syntax: js
box-number: 2
copyright: 
created: 20260202123100
lang: en
license: 
modified: 20260206134600
published: 20260206134600
visibility: public

```{="js"}
/*-----------------------------------------------------------------------------
 * Copyright (c) 2026-present Detlef Stern
 *
 * This file is part of Zettelstore.
 *
 * Zettelstore is licensed under the latest version of the EUPL (European Union
 * Public License). Please see file LICENSE.txt for your rights and obligations
 * under this license.
 *
 * SPDX-License-Identifier: EUPL-1.2
 * SPDX-FileCopyrightText: 2026-present Detlef Stern
 *-----------------------------------------------------------------------------
 */

 // Polyfill for Clipboard API (for older browsers)
(function() {
    if (!navigator.clipboard) {
        navigator.clipboard = {
            writeText: function(text) {
                return new Promise(function(resolve, reject) {
                    var tempInput = document.createElement('input');
                    tempInput.value = text;
                    document.body.appendChild(tempInput);
                    tempInput.select();
                    var success = document.execCommand('copy');
                    document.body.removeChild(tempInput);

                    if (success) {
                        resolve();
                    } else {
                        reject(new Error('Failed to copy text using execCommand.'));
                    }
                });
            }
        };
    }
})();
```