Let's say I have an update page in HTML5 and if the user edited a field, I want to show a pop-up whenever the user will exit the page (by clicking on another link) without clicking the update button. The pop-up will confirm if the user wants to save his edits or if the user declined, simply continue on the link he clicked before. How to achieve this in HTML5/JavaScript? Is there any function that preempts redirects? Thanks.
Use the onbeforeunload event.
Check out the demo: onbeforeunload Demo
JS code:
<script language="JavaScript">
window.onbeforeunload = confirmExit;
function confirmExit()
{
return "You have attempted to leave this page. If you have made any changes to the fields without clicking the Save button, your changes will be lost. Are you sure you want to exit this page?";
}
</script>
Related
When user click on browser back button, user will see a alert message for that I am using below code.
window.onbeforeunload = function () { return "If you want to go back to previous page Please use Previous step Button in below"; };
But in the code I have written "If you want to go back to previous page Please use Previous Step Button in below". This message is not displaying in alert box,instead of that message it is showing another message:
.
How can I display my own message in the alert box?
You will need to put javascript/jquery code you want to use on a handler for beforeunload event
window.addEventListener("beforeunload", function (event) {
//your code goes here. Create modal window or whatever you need
});
I have a page and I named it to mypage.php. I have a table MyTable with a column STATUS. I want to update the status to T when the user enters to the page and change to F when the user leaves or close from the page.
I tried with onbeforeunload with JS. Help me any way.
Try
window.onunload=function(){
/......when user closes..../
}
window.onload=function(){
/....when user enters page.../}
I think you should try the "onfocusout" or "blur" event if you want to update it when the user goes on another tab and not only when he close your tab. Put the onfocusout on the body tag and it will fire when the user will exit your tab, by switching to another tab or by closing yours.
Let's say a parent window is www.mysite.com/index.php has several links. When user clicks on these links, a popup is opened.
The popup has some forms. When the user clicks submit button, another script is called within the popup like this:
if ((isset($_POST['Complete'])) && ($_POST['Complete']=='Complete')) {
unset($_POST['Complete']);
include 'result.php';
return;
}
The result.php enters the data into database and pass the result to parent window with the following
<script language="JavaScript" type="text/javascript">
window.opener.location.href = 'submission.php';
window.close();
</script>
The parent window then show the final result, update the master database and emails the users.
Now here is the problem.
User clicks the link on parents.
Form opens, but user click close (browser cross button).
The user then closes parent window
The user then visit some other page of the site; say other.php
But the master database is getting updated and the user is getting the email (All null values though).
Since the form was never completed, the result.php should never be called. and if result.php is never called, submission.php should never be called.
What is happening here?
Change the type of the close button to button.
When I press and hold the browser back button or just right click the back button I can go back pages. But I need to disable it. Is there any way to do that with javascript or jsp
Open A New Window without Back Button
browser-back-button-viralpatelThis one is very crude technique. But in some case it works like charm. All you have to do is to open the webpage in a new window. This window doesn’t have back button at all because we have hide the toolbar.
This technique does work in some case but user has still a workaround to navigate to previous page. Most of the browser have options of Back in context menu. Thus user can still right click on the page and click Back to go to previous page. We will shortly see the workaround for this issue also.
Following is the code to open webpage in a new window have no toolbar (Back/Next buttons).
window.open ("http://viralpatel.net/blogs/",
"mywindow","status=1,toolbar=0");
Also it is possible to disable the right click on any webpage using Javascript. Add following code in the webpage.
<body oncontextmenu="return false;">
Disable Back functionality using history.forward
This is another technique to disable the back functionality in any webpage. We can disable the back navigation by adding following code in the webpage. Now the catch here is that you have to add this code in all the pages where you want to avoid user to get back from previous page. For example user follows the navigation page1 -> page2. And you want to stop user from page2 to go back to page1. In this case all following code in page1.
<SCRIPT type="text/javascript">
window.history.forward();
function noBack() { window.history.forward(); }
</SCRIPT>
</HEAD>
<BODY onload="noBack();"
onpageshow="if (event.persisted) noBack();" onunload="">
The above code will trigger history.forward event for page1. Thus if user presses Back button on page2, he will be sent to page1. But the history.forward code on page1 pushes the user back to page2. Thus user will not be able to go back from page1.
Warn User if Back is Pressed
You may want to warn user if Back button is pressed. This works in most of the cases. If you have some unsaved form data, you might want to trigger a warning message to user if Back button is pressed.
Following Javascript snippet will add a warning message in case Back button is pressed:
window.onbeforeunload = function() { return "You work will be lost.";
Reference
just use
window.onbeforeunload = function() { window.history.forward(1); };
or if u like to warning user
window.onbeforeunload = function() { return "Back button is not available!"; window.history.forward(1); };
I have a “pop-up” web page inherits from System.Web.UI.Page in a plug-in which is a part of a large web framework. The markup is inside <asp:Content> below. I need to perform some actions (updating the page behind) when the user clicks on “Close” button (id = _close) and when the user clicks on the ‘x’ button on the right corner of the page. My page is not displayed in the browser. I got the “onclick” (in the code behind) to work for “Close” button below, but I don’t know how to detect when the ‘x’ button is clicked. I tried on window.beforeunload and window.onclose, it doesn’t work. “Hello World” pops up when my web page opens and when I click “Close” (_close) button.
How do I handle for the click on the ‘x’ the same way when “_close” button is clicked?
<script language="javascript">
function doClose() { alert('Hello World!'); } window.onload = doClose(); // also tried with window.beforeunload </script>
You can execute the code on the opener. Write a method in opener and execute it from the pop-up window.
http://www.w3schools.com/jsref/prop_win_opener.asp