兼容多浏览器的JavaScript复制到剪贴板实现方案

多浏览器兼容的剪贴板复制实现

以下是实现跨浏览器复制功能的JavaScript代码示例，该方案旨在兼容包括IE和Firefox在内的多种主流浏览器，适用于需要广泛支持的Web场景。

copyToClipboard = function(txt) {

if(window.clipboardData) {

window.clipboardData.clearData();

window.clipboardData.setData(”Text”, txt);

} else if(navigator.userAgent.indexOf(”Opera”) != -1) {

window.location = txt;

} else if (window.netscape) {

try {

netscape.security.PrivilegeManager.enablePrivilege(”UniversalXPConnect”);

} catch (e) {

alert(”您的firefox安全限制限制您进行剪贴板操作，请打开'about:config'将signed.applets.codebase_principal_support'设置为true'之后重试”);

return false;

var clip = Components.classes['@mozilla.org/widget/clipboard;1′].createInstance(Components.interfaces.nsIClipboard);

if (!clip)

return;

var trans = Components.classes['@mozilla.org/widget/transferable;1′].createInstance(Components.interfaces.nsITransferable);

if (!trans)

return;

trans.addDataFlavor('text/unicode');

var str = new Object();

var len = new Object();

var str = Components.classes[”@mozilla.org/supports-string;1″].createInstance(Components.interfaces.nsISupportsString);

var copytext = txt;

str.data = copytext;

trans.setTransferData(”text/unicode”,str,copytext.length*2);

var clipid = Components.interfaces.nsIClipboard;

if (!clip)

return false;

clip.setData(trans,null,clipid.kGlobalClipboard);