[JS]网页中常见的预览复制功能

         function preview(strName,intWidth,intHeight)
         {
             var strHtml = document.getElementById(strName).value;
             var abc = window.open("about:blank","preview","status=no,menubar=no,statusbar=no,address=no,guide=no,height="+intHeight+",width="+intWidth,"我们这里");
                   abc.document.open();
                  abc.document.write("<style type='text/css'>*{font-size:12px;}</style>");
                  abc.document.write("<body style='margin:0px;padding:0px;'>"+strHtml+"</body>");
                  abc.focus();
         }
         function copyToClipboard( strName )
         {
             var txt = document.getElementById(strName).value;
             try{
             if(window.clipboardData) {    
                     window.clipboardData.clearData();    
                     window.clipboardData.setData("Text", txt);   
                     alert("复制成功");
             }else if (window.netscape) {    
                  try {    
                       netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");    
                  } catch (e) {    
                       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'");
                       window.open("about:config");
                  }    
                  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);    
                  alert("复制成功！")    
             }else
             {
                var obj=document.getElementById(strName).select();
                     window.document.execCommand("Copy","false",null);
                     alert("复制成功");
             }
             }catch(e)
             {
                 alert("复制失败,可能原因为,该浏览器不支持复制!");
             }
        }   
posted @ 2009-09-22 12:05  竹子小毅  阅读(330)  评论(0)  编辑  收藏  举报