Prompt On New Tab

Display a confirmation dialog when the site wants to open a new tab. This won't work if the user opens a link in a new tab using web browser's "Open in a new tab", "Open in background tab", or similar which are web browser internal features or browser extension features.
目前為 2018-02-14 提交的版本，檢視最新版本。
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Wrap lines
// ==UserScript==
// @name         Prompt On New Tab
// @namespace    https://gf.qytechs.cn/en/users/85671-jcunews
// @version      1.1.6
// @license      GNU AGPLv3
// @description  Display a confirmation dialog when the site wants to open a new tab. This won't work if the user opens a link in a new tab using web browser's "Open in a new tab", "Open in background tab", or similar which are web browser internal features or browser extension features.
// @author       jcunews
// @match        *://*/*
// @grant        none
// @run-at       document-start
// ==/UserScript==

/*
  Information about rejectList and allowList can be found on below URL.

  https://gf.qytechs.cn/en/scripts/38392-prompt-on-new-tab
*/

var rejectList = [
  ["*", "*://*.doubleclick.net/*"],
  ["*", /^https?:\/\/[^.]+\.adservices?\.com\//i],
  ["*://site.com/*", /^.*?:\/\/site\.com\/(offer|popup)/i]
];

var allowList = [
  ["*://www.bing.com/*", "*"],
  ["*://www.google.*/*", "*://*.google.*/*"]
];

[rejectList, allowList].forEach(function(list) {
  list.forEach(function(pair) {
    pair.forEach(function(str, i) {
      if (("string" === typeof str) || (str instanceof String)) {
        pair[i] = new RegExp("^" + str.replace(/([(){}\[\]\\^$.+?|])/g, "\\$1").replace(/([*])/g, ".*?") + "$", "i");
      }
    });
  });
});

function checkUrl(target, curUrl) {
  function checkUrlPair(pair) {
    if (pair[0].test(curUrl) && pair[1].test(target)) return true;
  }

  curUrl = location.href;
  if (rejectList.some(checkUrlPair)) {
    return -1;
  } else if (allowList.some(checkUrlPair)) {
    return 1;
  } else return 0;
}

(function(open_, anchors, forms, frames) {
  function dummy(){}

  frames = document.frames;
  function isFrameName(name) {
    return (name !== "_blank") && Array.prototype.slice.call(frames).some(
      function(ele) {
        return ele.name === name;
      }
    );
  }

  open_ = window.open;
  window.open = function(url, name) {
    var loc = {}, wnd = {
      document: {
        close: dummy,
        location: loc,
        open: dummy,
        write: dummy
      },
      location: loc
    };
    if (isFrameName(name)) {
      return open_.apply(this, arguments);
    } else switch (checkUrl(url)) {
      case -1:
        return wnd;
      case 1:
        return open_.apply(this, arguments);
      default:
        if (!confirm("This site wants to open a new tab.\nDo you want to allow it?\n\nURL:\n" + url)) {
          return wnd;
        } else return open_.apply(this, arguments);
    }
  };

  function actionCheckUrl(url, msg, ev) {
    switch (checkUrl(url)) {
      case -1:
        if (ev && ev.preventDefault) {
          ev.preventDefault();
          ev.stopPropagation();
          ev.stopImmediatePropagation();
        }
        return false;
      case 1:
        return true;
      default:
        if (!confirm(msg + "\nDo you want to allow it?\n\nURL:\n" + url)) {
          if (ev && ev.preventDefault) {
            ev.preventDefault();
            ev.stopPropagation();
            ev.stopImmediatePropagation();
          }
          return false;
        } else return true;
    }
  }

  anchors = document.getElementsByTagName("A");
  function onAnchorClick(ev) {
    if (this.href && (/^https?:/).test(this.href) && this.target && !isFrameName(this.target)) {
      return actionCheckUrl(this.href, "This site wants to open a new tab.", ev);
    } else return true;
  }

  forms = document.getElementsByTagName("FORM");
  function onFormSubmit(ev) {
    if (this.action && this.target && !isFrameName(this.target)) {
      if (actionCheckUrl(this.action, "This site wants to submit a form in a new tab.", ev)) {
        return this.submit_pont.apply(this, arguments);
      } else return false;
    } else if (!ev || !ev.preventDefault) {
      return this.submit_pont.apply(this, arguments);
    }
  }

  setInterval(function(i) {
    for (i = anchors.length-1; i >= 0; i--) {
      if (!anchors[i].listended) {
        anchors[i].listended = 1;
        anchors[i].addEventListener("click", onAnchorClick, true);
      } else break;
    }
    for (i = forms.length-1; i >= 0; i--) {
      if (!forms[i].listended) {
        forms[i].listended = 1;
        forms[i].submit_pont = forms[i].submit;
        forms[i].submit = onFormSubmit;
        forms[i].addEventListener("submit", onFormSubmit, true);
      } else break;
    }
  }, 500);
})();
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