如何在 JavaScript 中复制到剪贴板？

Question

What is the best way to copy text to the clipboard? (multi-browser)

I have tried:

function copyToClipboard(text) {
    if (window.clipboardData) { // Internet Explorer
        window.clipboardData.setData("Text", text);
    } else {  
        unsafeWindow.netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");  
        const clipboardHelper = Components.classes["@mozilla.org/widget/clipboardhelper;1"].getService(Components.interfaces.nsIClipboardHelper);  
        clipboardHelper.copyString(text);
    }
}

but in Internet Explorer it gives a syntax error. In Firefox, it says unsafeWindow is not defined.

A nice trick without flash: How does Trello access the user's clipboard?

转载于:https://stackoverflow.com/questions/400212/how-do-i-copy-to-the-clipboard-in-javascript

Answer 1

Reading and modifying the clipboard from a webpage raises security and privacy concerns. However, in Internet Explorer, it is possible to do it. I found this example snippet:

    <script type="text/javascript">
        function select_all(obj) {
            var text_val=eval(obj);
            text_val.focus();
            text_val.select();
            r = text_val.createTextRange();
            if (!r.execCommand) return; // feature detection
            r.execCommand('copy');
        }
    </script>
    <input value="http://www.sajithmr.com"
     onclick="select_all(this)" name="url" type="text" />

</div>