jQuery简单实现点击文本框复制内容到剪贴板上的方法

//点击文本框复制其内容到剪贴板上方法

function copyToClipboard(txt) {

  if (window.clipboardData) {

    window.clipboardData.clearData();

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

    alert("已经成功复制到剪帖板上！");

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

    window.location = txt;

  } else if (window.netscape) {

    try {

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

    } catch (e) {

      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'");

    }

    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("已经成功复制到剪帖板上！");

  }

}

//点击文本框复制其内容到剪贴板上

function setCopyLink() {

  $("#txt_CopyLink").val(document.URL)

  .focus(function () {

    $(this).css({ "background-color": "#ddd" }).select();

    copyToClipboard($("#txt_CopyLink").val());

  }).blur(function () {

    $(this).css({ "background-color": "#fff" });

  });

}