firefox 复制文本js代码

</p> <p><script></p> <p>function copyToClipboard(txt) {</p> <p> if(window.clipboardData) {</p> <p> window.clipboardData.clearData();</p> <p> window.clipboardData.setData("Text", txt);</p> <p> } else if(navigator.userAgent.indexOf("Opera") != -1) {</p> <p> window.location = txt;</p> <p> } else if (window.netscape) {</p> <p> try {</p> <p> netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");</p> <p> } catch (e) {</p> <p> alert("被浏览器拒绝！ 请在浏览器地址栏输入'about:config'并回车 然后将'signed.applets.codebase_principal_support'设置为'true'");</p> <p> }</p> <p> var clip = Components.classes['@mozilla.org/widget/clipboard;1'].createInstance(Components.interfaces.nsIClipboard);</p> <p> if (!clip)</p> <p> return;</p> <p> var trans = Components.classes['@mozilla.org/widget/transferable;1'].createInstance(Components.interfaces.nsITransferable);</p> <p> if (!trans)</p> <p> return;</p> <p> trans.addDataFlavor('text/unicode');</p> <p> var str = new Object();</p> <p> var len = new Object();</p> <p> var str = Components.classes["@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString);</p> <p> var copytext = txt;</p> <p> str.data = copytext;</p> <p> trans.setTransferData("text/unicode",str,copytext.length*2);</p> <p> var clipid = Components.interfaces.nsIClipboard;</p> <p> if (!clip)</p> <p> return false;</p> <p> clip.setData(trans,null,clipid.kGlobalClipboard);</p> <p> }</p> <p>}</p> <p></script></p> <p><button onclick="copyToClipboard('你好！');">复制文本“你好！”</button></p> <p><textarea id="test">

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Allowing Firefox to access your clipboard