A sample of my code is here: http://develop.davzy.com/test2.php
<input name="avatarfile" type="file" id='uploadbutton' />
<script>document.getElementById("uploadbutton").click()</script>
It is supposed to open the file selector as soon as you open the page. It works in IE8, IE9, FireFox, but not in Chrome.
It won't work, not even in Firefox (7+). It's a security measure to avoid hijacking of the input field.
Regarding the pop up, Firefox warns you that the page is trying to pop up a window (the file upload dialog is an ui window) on page load, so the user is notified and is given the choice to allow it or block it.
Anyway, why would you need to open an file dialog on page load?
is because the browser blocks pop-ups, at least in firefox tells me a pop-up blocking
Related
I have a page with a JavaScript based idle sign off script as well as a file upload feature. I noticed that if I opened the dialog then allowed the idle sign off to trigger a redirect to the login page the open file dialog remained open. I would have expected it to be closed when the originating page is unloaded.
Given an input with type of file:
<input type="file" name="file" />
If the user clicks and opens the native file picker dialog window but while it is open the page or frame is redirected via a script the dialog does not close. A script like this should duplicate the behavior:
$('input[type=file]').on('click', function(){
setTimeout(function(){
window.location.href = "some other page";
}, 2000);
});
You can see the behavior here: https://jsfiddle.net/we40rpfs/1/
I was able to reproduce this in on Windows10 in IE Edge, Chrome 86.0.4240.198 and Firefox 82.0.2.
Interestingly in IE and Chrome the file picker host also crashes sporadically when the user attempts to close or cancel the dialog. Firefox might also crash it as well but I was unable to see it happen.
Is there any way to detect that this dialog is open and programmatically close it before redirecting?
It's the expected behavior that the dialog is still open without any user interaction.
At least, you can't programmatically close the dialog with JavaScript. The file dialog is in OS level which can't be reached with JavaScript for security reasons. All interaction with the file dialog must come from the user actually pressing mouse on the system dialog.
Ref link: How to programmatically close select file dialog
I am using software that creates all the HTML/XML so I don't have this and I have created a button to open a form in a new window. When I physically click on this button, everything works. However when I run the code onload, I get a message saying that the page is blocked and I need to remove any popup blocker
var button = getElement("GUID_of_Button");
button.click();
This code works if I set to open the form in the same window as a tooltip but not as a new window. I tried on Chrome, Firefox and IE with same results. (no console error)
Not sure if this helps (get this when I inspect element)
<input name="buttoncontrol0F09F8F7" id="ID_buttoncontrol0F09F8F7" value="Click here" type="submit" title="Click here" class="Button_Standard" style="cursor: pointer;">==$0
Naturally I can remove any blockers but as this is for the whole office, I can't ask everyone to do this just so I can get this to work. Any advise is appreciated.
This is a feature of modern browsers that restricts the opening of new windows to user-initiated actions.
This is important as it mitigate security risks and gets rid of the most obnoxious advertising.
Unless you can get everyone to change their browser settings, you won't have a new window opened automatically.
Depending on the data you need to display, you could consider alternative to new windows such as modals / pop-ins. Take a look for example at Bootstrap's modal.
Popup windows are generally used for advertisement and these windows will be opened without permission of user. Inorder to prevent this, most of the web browsers comes with popup blockers which should be explicitly configured by user if they want to automatically open something in a new window.
If you want to use this featue, you'll have to ask users to configure popup blockers in their web browser.
Can you link printing a webpage to printing a PDF?
Ideally, the PDF would be downloaded once the user uses the browser's print functionality (so a performance hit doesn't affect users who are not printing the website).
I'm looking for a Javascript/CSS print media query solution.
To answer my own question:
You can trigger Javascript to run on a print event, redirecting the user to a PDF (works for IE 5+, Firefox 6+, Chrome 9+, and Safari 5+):
Detecting browser print event
Replace the console.logs in the code snippet from the above link with window.location = "http://whatever.you.want.com"
Using this method, the print dialog will open briefly, close immediately and redirect the user to a PDF where they will have to hit the print button again.
We have an issue where Chrome's "Print Preview" does not print our pages correctly. If you use the "Use System Print Dialog link" (Ctrl+Shift+P), it prints our page fine (almost identically to Firefox).
We have a button on our page that calls window.print() to open the print dialog. However, in Chrome it opens to the "Print Preview" dialog which ends up not printing our page correctly.
Is there away with JavaScript to print directly to the "system print dialog" in Chrome?
P.S.
I do know how the end user can disable the Print Preview in chrome://flags, but what I want to know is there anyway to prevent it from showing when I programmatically call window.print() (or similar) regardless of user settings.
Print dialogs are not scriptable using JavaScript. They're proprietary parts of browsers themselves.
Hi i am facing the same issue... I even tried firing keyboard event ctrl+shift+P from my script in order to show system print dialog.
You can fire a keyboard event and that issue is successfully dispatched, however the value of keyCode that the browser receives is always 0 (instead of ASCII value of ‘P’)
There is a bug logged https://bugs.webkit.org/show_bug.cgi?id=16735 against webkit for the same… and here are some posts http://code.google.com/p/chromium/issues/detail?id=27048, http://code.google.com/p/chromium/issues/detail?id=52408 mentioning the same issue in Safari and Chrome…
Is it possible to close an Android browser window with window.close() or something related? I can't get anything to work on Android (on desktop browsers Chrome and Firefox I can window.close() without problems).
Thanks
Unfortunately, No.
I have a situation where I launch the zxing scanner app from my browser. It returns in a new browser window. I snag the data but then need to close that tab. And have yet to find a solution to get that tab closed, either through a user clicking a button on the page or in the body load. So it seems you can only put instructions on the page to have the user close the tab.