我正在考虑在 JavaScript 中创建一个确认菜单，它将在其中运行一组代码，具体取决于您选择是或否。
现在我希望它发生在window.onbeforeunload事件中，但只有当个人按下“是”时，我才希望其余代码工作。如果他们按“否”，我希望window.onbeforeunload彻底取消。我想知道这是否可能以及如何。这是我到目前为止所拥有的。我想要这个的原因是，当我运行脚本时，弹出窗口会在返回时出现，但在有人选择留下或离开之前。该click();功能启动擦除信息。我希望.click();在有人在返回时按“是”并且只有当他们按“是”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();
});