HTML：

 
    
     
         
  1. <body> 
    2.  
         
  2.      <form id="form1" runat="server"> 
    3.  
         
  3.      <div> 
    4.  
         
  4.          <textarea id="txtArea" cols="30" rows="3">我是一个文本，Hello World！</textarea><br /> 
    5.  
         
  5.          <input type="button" name="name" value="复制内容" onclick="copyToClipBoard('txtArea')" /> 
    6.  
         
  6.      </div> 
    7.  
         
  7.      </form> 
    8.  
         
  8.  </body> 
    9.  
        
 
    
JS:
 
    
 
 
    
 
    
     
         
  1. <script type="text/javascript"> 
    2.  
         
  2.          //复制文本框 
    3.  
         
  3.          function copyToClipBoard(id) { 
    4.  
         
  4.              var code = $("#" + id).val(); 
    5.  
         
  5.              code = HTMLDeCode(code); 
    6.  
         
  6.              var tip = copyCode(code); 
    7.  
         
  7.              if (tip == 0) { 
          //0 成功 1 失败 2 不支持 3 已经提示 
    8.  
         
  8.                  var _open = tool.getCookieValue("open"); 
    9.  
         
  9.                  if (_open == "0" && _global.security == "1") { 
    10.  
         
  10.                      alert("您当前的安全级别为高，此时“完全公开”代码将无效\n若要继续选择“完全公开”代码，请将安全级设置为“中”。"); 
    11.  
         
  11.                  } else { 
    12.  
         
  12.                      tool.setCenter($("#box2"), 0); 
    13.  
         
  13.                      $("#box2").fadeIn(); 
    14.  
         
  14.                  } 
    15.  
         
  15.              } else if (tip == 1) { 
    16.  
         
  16.                  alert("复制失败，请重试！"); 
    17.  
         
  17.              } else if (tip == 2) { 
    18.  
         
  18.                  alert("您的浏览器不支持此功能"); 
    19.  
         
  19.              } 
    20.  
         
  20.              if (typeof pgvSendClick == "function") { 
    21.  
         
  21.                  if (tool.getCookieValue("open") == 1) { 
    22.  
         
  22.                      pgvSendClick({ hottag: 'R1JT.wp.index.security' }); 
    23.  
         
  23.                  } else { 
    24.  
         
  24.                      pgvSendClick({ hottag: 'R1JT.wp.index.open' }); 
    25.  
         
  25.                  } 
    26.  
         
  26.              } 
    27.  
         
  27.   
    28.  
         
  28.          } 
    29.  
         
  29.          //去掉特殊符号 
    30.  
         
  30.          function HTMLDeCode(str) { 
    31.  
         
  31.              var s = ""; 
    32.  
         
  32.              if (str.length == 0) return ""; 
    33.  
         
  33.              s = str.replace(/&amp;/g, "&") 
    34.  
         
  34.                      .replace(/&lt;/g, "<") 
    35.  
         
  35.                      .replace(/&gt;/g, ">") 
    36.  
         
  36.                      .replace(/&nbsp;/g, " ") 
    37.  
         
  37.                      .replace(/&apos;/g, "'") 
    38.  
         
  38.                      .replace(/&quot;/g, "\""); 
    39.  
         
  39.              return s; 
    40.  
         
  40.          } 
    41.  
         
  41.          //执行复制 
    42.  
         
  42.          function copyCode(txt) { 
          //0 成功 1 失败 2 不支持 3 已经提示 
    43.  
         
  43.              if (window.clipboardData) { 
          //IE 
    44.  
         
  44.                  window.clipboardData.clearData(); 
    45.  
         
  45.                  window.clipboardData.setData("Text", txt); 
    46.  
         
  46.                  return 0; 
    47.  
         
  47.              } else if (navigator.userAgent.indexOf("Opera") != -1) { 
          //Opera                 
    48.  
         
  48.                  return 2; 
    49.  
         
  49.              } else if (window.netscape) { 
          //火狐                 
    50.  
         
  50.                  try { 
    51.  
         
  51.                      netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect"); 
    52.  
         
  52.                  } catch (e) { 
    53.  
         
  53.                      alert("被浏览器拒绝！\n请在浏览器地址栏输入'about:config'并回车\n然后将'signed.applets.codebase_principal_support'设置为'true'"); 
    54.  
         
  54.                      return 3; 
    55.  
         
  55.                  } 
    56.  
         
  56.                  var clip = Components.classes['@mozilla.org/widget/clipboard;1'].createInstance(Components.interfaces.nsIClipboard); 
    57.  
         
  57.                  if (!clip) 
    58.  
         
  58.                      return 1; 
    59.  
         
  59.                  var trans = Components.classes['@mozilla.org/widget/transferable;1'].createInstance(Components.interfaces.nsITransferable); 
    60.  
         
  60.                  if (!trans) 
    61.  
         
  61.                      return 1; 
    62.  
         
  62.                  trans.addDataFlavor('text/unicode'); 
    63.  
         
  63.                  var str = new Object(); 
    64.  
         
  64.                  var len = new Object(); 
    65.  
         
  65.                  var str = Components.classes["@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString); 
    66.  
         
  66.                  var copytext = txt; 
    67.  
         
  67.                  str.data = copytext; 
    68.  
         
  68.                  trans.setTransferData("text/unicode", str, copytext.length * 2); 
    69.  
         
  69.                  var clipid = Components.interfaces.nsIClipboard; 
    70.  
         
  70.                  if (!clip) 
    71.  
         
  71.                      return 1; 
    72.  
         
  72.                  clip.setData(trans, null, clipid.kGlobalClipboard); 
    73.  
         
  73.                  return 0; 
    74.  
         
  74.              } else { 
          //chrome ,safra         
    75.  
         
  75.                  return 2; 
    76.  
         
  76.              } 
    77.  
         
  77.          }  
    78.  
         
  78.      </script> 
    79.