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点击按钮实现文本的复制

    博客分类:
  • Html
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<html>
<head>
<SCRIPT LANGUAGE="JavaScript">
	function copyToClipBoard(id){
       var clipBoardContent = document.getElementById(id).value;
       if(window.clipboardData){
              window.clipboardData.clearData();
              window.clipboardData.setData("Text", clipBoardContent);
       }else if (window.netscape){
              try{
                     netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
              }catch (e){
                     alert("您的当前浏览器设置已关闭此功能!请按以下步骤开启此功能!\n新开一个浏览器,在浏览器地址栏输入'about:config'并回车。\n然后找到'signed.applets.codebase_principal_support'项,双击后设置为'true'。\n声明:本功能不会危极您计算机或数据的安全!");
              }
              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 = Components.classes["@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString);
              var copytext = clipBoardContent;
              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);
       }
       alert("已成功复制!");
       return true;
}
</SCRIPT>
</head>
<body>
<input type="text"  id="code" onmouseover="this.select();" value='www.baidu.com' size="20" />
<input type="button" value="复制" onClick="copyToClipBoard('code');" />
<br/>
</body>
</html>
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