javascript - 当用户关闭任何特定选项卡时如何显示提示？ (这是关于不适用于所有浏览器的单个选项卡)

Question

我正在从事一个项目，我需要在其中进行一些定制开发。其中之一是当用户关闭特定选项卡时我必须显示一个弹出窗口。我已经尝试了一些解决方案，但它无法正常工作。它要么在整个浏览器上工作，要么根本不工作。那么当用户关闭任何特定选项卡时，我如何实现提示。

我试过的解决方案是 Solution i tried

Answer 1

var validNavigation = false;

function wireUpEvents() {
  /**
   * For a list of events that triggers onbeforeunload on IE
   * check http://msdn.microsoft.com/en-us/library/ms536907(VS.85).aspx
   *
   * onbeforeunload for IE and chrome
   * check http://stackoverflow.com/questions/1802930/setting-onbeforeunload-on-body-element-in-chrome-and-ie-using-jquery
   */
  var dont_confirm_leave = 0; //set dont_confirm_leave to 1 when you want the user to be able to leave withou confirmation
  var leave_message = 'You sure you want to leave?'
  function goodbye(e) {
    if (!validNavigation) {
      if (dont_confirm_leave!==1) {
        if(!e) e = window.event;
        //e.cancelBubble is supported by IE - this will kill the bubbling process.
        e.cancelBubble = true;
        e.returnValue = leave_message;
        //e.stopPropagation works in Firefox.
        if (e.stopPropagation) {
          e.stopPropagation();
          e.preventDefault();
        }
        //return works for Chrome and Safari
        return leave_message;
      }
    }
  }
  window.onbeforeunload=goodbye;

  // Attach the event keypress to exclude the F5 refresh
  $(document).bind('keypress', function(e) {
    if (e.keyCode == 116){
      validNavigation = true;
    }
  });

  // Attach the event click for all links in the page
  $("a").bind("click", function() {
    validNavigation = true;
  });

  // Attach the event submit for all forms in the page
  $("form").bind("submit", function() {
    validNavigation = true;
  });

  // Attach the event click for all inputs in the page
  $("input[type=submit]").bind("click", function() {
    validNavigation = true;
  });

}

// Wire up the events as soon as the DOM tree is ready
$(document).ready(function() {
  wireUpEvents();
});