javascript - JS 中的确认弹出窗口

Question

我正在考虑在 JavaScript 中制作一个确认菜单，根据您选择"is"还是“否”，它将在其中运行一组代码。

现在我希望它发生在 window.onbeforeunload 事件上，但只有当个人按下“yes”时，我才希望其余代码起作用。如果他们按“否”，我希望彻底取消 window.onbeforeunload。我想知道这是否可能以及如何实现。这是我到目前为止所拥有的。我想要这个的原因是因为当我运行脚本时，弹出窗口会在返回时显示，但在有人选择留下或离开之前。 click(); 功能开始删除信息。我希望 .click(); 在有人按回车键“yes”后启动，并且只有当他们按“yes”时才启动。

var validNavigation = false;

function wireUpEvents() {

var dont_confirm_leave = 0; 
var leave_message = document.getElementById("kioskform:broswerCloseSubmit");
var leave_safari = document.getElementById("kioskform:broswerCloseSafari");
      function goodbye(e) {
       if (!validNavigation) {
function disp_confirm()
{
var leaveMessage=confirm("Are you sure you want to leave")
if (leaveMessage==true)
{          if (dont_confirm_leave!==1) {
        if(!e) e = window.event;
        //for IE
        e.cancelBubble = true;
        e.returnValue = leave_message.click();
        //e.stopPropagation works in Firefox.
        if (e.stopPropagation) {
          e.stopPropagation();
          e.preventDefault();
        }
        //return works for Chrome and Safari
         leave_safari.click();
         return '';

        //add the code to delete the kiosk information here.
        // this is what is to be done.
      }
    }

   else 
{
Alert("Returning to the page.")
}
  }
  window.onbeforeunload=goodbye;

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

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

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

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

}

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

Answer 1

为什么不直接使用 window.confirm ？