Call native browser function, even after it has been overridden - javascript

If I have something like
alert = 0;
in another script.
This is in another script is and my code cannot load before that script.
How can I call the original alert method in my script?

Before overriding the original alert, save it.
var origAlert = alert;
alert = 0;
origAlert("foo");
Demo: http://jsfiddle.net/jfriend00/tnNE7/
If you can't save the original value, the only other way I know of to get access to it is in an iframe. Here's an example:
alert = 0;
var iframe = document.createElement("iframe");
iframe.height = 0;
iframe.width = 0;
document.body.appendChild(iframe);
iframe.contentWindow.alert.call(window, "foo");​
Working example: http://jsfiddle.net/jfriend00/waMEV/
I haven't tried this in all browsers, but it works in Chrome, IE and Firefox and I think it should work in other browsers.

Ok, I'm the first to admit this is an ugly answer, but it seems to work:
alert = 0;
var win = window.open(),
method = win.alert;
win.close();
method.call(window, "my message");
Fiddle here. Essentially, you make a new window instance and steal its alert method. The downside is that you actually have to open a new browser window, albeit briefly. I doubt this is actually a practical solution to your problem - depends what other site you're trying to work with, and how much you care about how your solution looks to the end user.
Edit: This is a combo of the above answer and jfriend00's answer, which solves the "open a new window" problem. I think this is a somewhat better option, as a) it doesn't rely on the iframe still being in the DOM when you need to call the method, and b) it should be generalizable to any window method, which jfriend00's answer probably isn't.
alert = 0;
// make a new window instance in an iframe
var iframe = document.createElement("iframe");
iframe.height = iframe.width = 0;
document.body.appendChild(iframe);
// steal the method
var method = iframe.contentWindow.alert;
// remove the evidence
document.body.removeChild(iframe);
// now use the method for your own purposes
function myAlert(message) {
method.call(window, message);
}
myAlert("foo");

Related

Change content in iframe without reloading page with AJAX and Jquery [duplicate]

I would like to reload an <iframe> using JavaScript. The best way I found until now was set the iframe’s src attribute to itself, but this isn’t very clean. Any ideas?
document.getElementById('some_frame_id').contentWindow.location.reload();
be careful, in Firefox, window.frames[] cannot be indexed by id, but by name or index
document.getElementById('iframeid').src = document.getElementById('iframeid').src
It will reload the iframe, even across domains!
Tested with IE7/8, Firefox and Chrome.
Note: As mentioned by #user85461, this approach doesn't work if the iframe src URL has a hash in it (e.g. http://example.com/#something).
If using jQuery, this seems to work:
$('#your_iframe').attr('src', $('#your_iframe').attr('src'));
Appending an empty string to the src attribute of the iFrame also reloads it automatically.
document.getElementById('id').src += '';
window.frames['frameNameOrIndex'].location.reload();
Because of the same origin policy, this won't work when modifying an iframe pointing to a different domain. If you can target newer browsers, consider using HTML5's Cross-document messaging. You view the browsers that support this feature here: http://caniuse.com/#feat=x-doc-messaging.
If you can't use HTML5 functionality, then you can follow the tricks outlined here: http://softwareas.com/cross-domain-communication-with-iframes. That blog entry also does a good job of defining the problem.
I've just come up against this in chrome and the only thing that worked was removing and replacing the iframe. Example:
$(".iframe_wrapper").find("iframe").remove();
var iframe = $('<iframe src="' + src + '" frameborder="0"></iframe>');
$.find(".iframe_wrapper").append(iframe);
Pretty simple, not covered in the other answers.
Simply replacing the src attribute of the iframe element was not satisfactory in my case because one would see the old content until the new page is loaded. This works better if you want to give instant visual feedback:
var url = iframeEl.src;
iframeEl.src = 'about:blank';
setTimeout(function() {
iframeEl.src = url;
}, 10);
A refinement on yajra's post ... I like the thought, but hate the idea of browser detection.
I rather take ppk's view of using object detection instead of browser detection,
(http://www.quirksmode.org/js/support.html),
because then you're actually testing the capabilities of the browser and acting accordingly, rather than what you think the browser is capable of at that time. Also doesn't require so much ugly browser ID string parsing, and doesn't exclude perfectly capable browsers of which you know nothing about.
So, instead of looking at navigator.AppName, why not do something like this, actually testing for the elements you use? (You could use try {} blocks if you want to get even fancier, but this worked for me.)
function reload_message_frame() {
var frame_id = 'live_message_frame';
if(window.document.getElementById(frame_id).location ) {
window.document.getElementById(frame_id).location.reload(true);
} else if (window.document.getElementById(frame_id).contentWindow.location ) {
window.document.getElementById(frame_id).contentWindow.location.reload(true);
} else if (window.document.getElementById(frame_id).src){
window.document.getElementById(frame_id).src = window.document.getElementById(frame_id).src;
} else {
// fail condition, respond as appropriate, or do nothing
alert("Sorry, unable to reload that frame!");
}
}
This way, you can go try as many different permutations as you like or is necessary, without causing javascript errors, and do something sensible if all else fails. It's a little more work to test for your objects before using them, but, IMO, makes for better and more failsafe code.
Worked for me in IE8, Firefox (15.0.1), Chrome (21.0.1180.89 m), and Opera (12.0.2) on Windows.
Maybe I could do even better by actually testing for the reload function, but that's enough for me right now. :)
for new url
location.assign("http:google.com");
The assign() method loads a new document.
reload
location.reload();
The reload() method is used to reload the current document.
Another solution.
const frame = document.getElementById("my-iframe");
frame.parentNode.replaceChild(frame.cloneNode(), frame);
Now to make this work on chrome 66, try this:
const reloadIframe = (iframeId) => {
const el = document.getElementById(iframeId)
const src = el.src
el.src = ''
setTimeout(() => {
el.src = src
})
}
In IE8 using .Net, setting the iframe.src for the first time is ok,
but setting the iframe.src for the second time is not raising the page_load of the iframed page.
To solve it i used iframe.contentDocument.location.href = "NewUrl.htm".
Discover it when used jQuery thickBox and tried to reopen same page in the thickbox iframe.
Then it just showed the earlier page that was opened.
Use reload for IE and set src for other browsers. (reload does not work on FF)
tested on IE 7,8,9 and Firefox
if(navigator.appName == "Microsoft Internet Explorer"){
window.document.getElementById('iframeId').contentWindow.location.reload(true);
}else {
window.document.getElementById('iframeId').src = window.document.getElementById('iframeId').src;
}
If you using Jquery then there is one line code.
$('#iframeID',window.parent.document).attr('src',$('#iframeID',window.parent.document).attr('src'));
and if you are working with same parent then
$('#iframeID',parent.document).attr('src',$('#iframeID',parent.document).attr('src'));
Using self.location.reload() will reload the iframe.
<iframe src="https://vivekkumar11432.wordpress.com/" width="300" height="300"></iframe>
<br><br>
<input type='button' value="Reload" onclick="self.location.reload();" />
<script type="text/javascript">
top.frames['DetailFrame'].location = top.frames['DetailFrame'].location;
</script>
If all of the above doesn't work for you:
window.location.reload();
This for some reason refreshed my iframe instead of the whole script. Maybe because it is placed in the frame itself, while all those getElemntById solutions work when you try to refresh a frame from another frame?
Or I don't understand this fully and talk gibberish, anyways this worked for me like a charm :)
Have you considered appending to the url a meaningless query string parameter?
<iframe src="myBaseURL.com/something/" />
<script>
var i = document.getElementsById("iframe")[0],
src = i.src,
number = 1;
//For an update
i.src = src + "?ignoreMe=" + number;
number++;
</script>
It won't be seen & if you are aware of the parameter being safe then it should be fine.
Reload from inside Iframe
If your app is inside an Iframe you can refresh it with replacing the location href:
document.location.href = document.location.href
If you tried all of the other suggestions, and couldn't get any of them to work (like I couldn't), here's something you can try that may be useful.
HTML
<a class="refresh-this-frame" rel="#iframe-id-0">Refresh</a>
<iframe src="" id="iframe-id-0"></iframe>
JS
$('.refresh-this-frame').click(function() {
var thisIframe = $(this).attr('rel');
var currentState = $(thisIframe).attr('src');
function removeSrc() {
$(thisIframe).attr('src', '');
}
setTimeout (removeSrc, 100);
function replaceSrc() {
$(thisIframe).attr('src', currentState);
}
setTimeout (replaceSrc, 200);
});
I initially set out to try and save some time with RWD and cross-browser testing. I wanted to create a quick page that housed a bunch of iframes, organized into groups that I would show/hide at will. Logically you'd want to be able to easily and quickly refresh any given frame.
I should note that the project I am working on currently, the one in use in this test-bed, is a one-page site with indexed locations (e.g. index.html#home). That may have had something to do with why I couldn't get any of the other solutions to refresh my particular frame.
Having said that, I know it's not the cleanest thing in the world, but it works for my purposes. Hope this helps someone. Now if only I could figure out how to keep the iframe from scrolling the parent page each time there's animation inside iframe...
EDIT:
I realized that this doesn't "refresh" the iframe like I'd hoped it would. It will reload the iframe's initial source though. Still can't figure out why I couldn't get any of the other options to work..
UPDATE:
The reason I couldn't get any of the other methods to work is because I was testing them in Chrome, and Chrome won't allow you to access an iframe's content (Explanation: Is it likely that future releases of Chrome support contentWindow/contentDocument when iFrame loads a local html file from local html file?) if it doesn't originate from the same location (so far as I understand it). Upon further testing, I can't access contentWindow in FF either.
AMENDED JS
$('.refresh-this-frame').click(function() {
var targetID = $(this).attr('rel');
var targetSrc = $(targetID).attr('src');
var cleanID = targetID.replace("#","");
var chromeTest = ( navigator.userAgent.match(/Chrome/g) ? true : false );
var FFTest = ( navigator.userAgent.match(/Firefox/g) ? true : false );
if (chromeTest == true) {
function removeSrc() {
$(targetID).attr('src', '');
}
setTimeout (removeSrc, 100);
function replaceSrc() {
$(targetID).attr('src', targetSrc);
}
setTimeout (replaceSrc, 200);
}
if (FFTest == true) {
function removeSrc() {
$(targetID).attr('src', '');
}
setTimeout (removeSrc, 100);
function replaceSrc() {
$(targetID).attr('src', targetSrc);
}
setTimeout (replaceSrc, 200);
}
if (chromeTest == false && FFTest == false) {
var targetLoc = (document.getElementById(cleanID).contentWindow.location).toString();
function removeSrc() {
$(targetID).attr('src', '');
}
setTimeout (removeSrc, 100);
function replaceSrc2() {
$(targetID).attr('src', targetLoc);
}
setTimeout (replaceSrc2, 200);
}
});
For debugging purposes one could open the console, change the execution context to the frame that he wants refreshed, and do document.location.reload()
I had a problem with this because I didnt use a timeout to give the page time to update, I set the src to '', and then set it back to the original url, but nothing happened:
function reload() {
document.getElementById('iframe').src = '';
document.getElementById('iframe').src = url;
}
but it didnt reload the site, because it is single threaded, the first change doesnt do anything, because that function is still taking up the thread, and then it sets it back to the original url, and I guess chrome doesnt reload because preformance or whatever, so you need to do:
function setBack() {
document.getElementById('iframe').src = url;
}
function reload() {
document.getElementById('iframe').src = '';
setTimeout(setBack,100);
}
if the setTimeout time is too short, it doesnt work, so if its not working, try set it to 500 or something and see if it works then.
this was in the latest version of chrome at the time of writing this.
This way avoids adding history to some browsers (an unneeded overhead). In the body section put:
<div id='IF'>
<iframe src='https://www.wolframalpha.com/input?i=Memphis%20TN%20Temperature'
style="width:5in; height:6in" // or whatever you want in your Iframe
title'Temperature'></iframe>
</div>
Then in some JAVASCRIPT you may have a function like:
function UPdate() { // Iframe
T1=document.getElementById('IF')
T2=T1.innerHTML
T1.innerHTML=T2
}

How to reload an iframe in Javascript? [duplicate]

I would like to reload an <iframe> using JavaScript. The best way I found until now was set the iframe’s src attribute to itself, but this isn’t very clean. Any ideas?
document.getElementById('some_frame_id').contentWindow.location.reload();
be careful, in Firefox, window.frames[] cannot be indexed by id, but by name or index
document.getElementById('iframeid').src = document.getElementById('iframeid').src
It will reload the iframe, even across domains!
Tested with IE7/8, Firefox and Chrome.
Note: As mentioned by #user85461, this approach doesn't work if the iframe src URL has a hash in it (e.g. http://example.com/#something).
If using jQuery, this seems to work:
$('#your_iframe').attr('src', $('#your_iframe').attr('src'));
Appending an empty string to the src attribute of the iFrame also reloads it automatically.
document.getElementById('id').src += '';
window.frames['frameNameOrIndex'].location.reload();
Because of the same origin policy, this won't work when modifying an iframe pointing to a different domain. If you can target newer browsers, consider using HTML5's Cross-document messaging. You view the browsers that support this feature here: http://caniuse.com/#feat=x-doc-messaging.
If you can't use HTML5 functionality, then you can follow the tricks outlined here: http://softwareas.com/cross-domain-communication-with-iframes. That blog entry also does a good job of defining the problem.
I've just come up against this in chrome and the only thing that worked was removing and replacing the iframe. Example:
$(".iframe_wrapper").find("iframe").remove();
var iframe = $('<iframe src="' + src + '" frameborder="0"></iframe>');
$.find(".iframe_wrapper").append(iframe);
Pretty simple, not covered in the other answers.
Simply replacing the src attribute of the iframe element was not satisfactory in my case because one would see the old content until the new page is loaded. This works better if you want to give instant visual feedback:
var url = iframeEl.src;
iframeEl.src = 'about:blank';
setTimeout(function() {
iframeEl.src = url;
}, 10);
A refinement on yajra's post ... I like the thought, but hate the idea of browser detection.
I rather take ppk's view of using object detection instead of browser detection,
(http://www.quirksmode.org/js/support.html),
because then you're actually testing the capabilities of the browser and acting accordingly, rather than what you think the browser is capable of at that time. Also doesn't require so much ugly browser ID string parsing, and doesn't exclude perfectly capable browsers of which you know nothing about.
So, instead of looking at navigator.AppName, why not do something like this, actually testing for the elements you use? (You could use try {} blocks if you want to get even fancier, but this worked for me.)
function reload_message_frame() {
var frame_id = 'live_message_frame';
if(window.document.getElementById(frame_id).location ) {
window.document.getElementById(frame_id).location.reload(true);
} else if (window.document.getElementById(frame_id).contentWindow.location ) {
window.document.getElementById(frame_id).contentWindow.location.reload(true);
} else if (window.document.getElementById(frame_id).src){
window.document.getElementById(frame_id).src = window.document.getElementById(frame_id).src;
} else {
// fail condition, respond as appropriate, or do nothing
alert("Sorry, unable to reload that frame!");
}
}
This way, you can go try as many different permutations as you like or is necessary, without causing javascript errors, and do something sensible if all else fails. It's a little more work to test for your objects before using them, but, IMO, makes for better and more failsafe code.
Worked for me in IE8, Firefox (15.0.1), Chrome (21.0.1180.89 m), and Opera (12.0.2) on Windows.
Maybe I could do even better by actually testing for the reload function, but that's enough for me right now. :)
for new url
location.assign("http:google.com");
The assign() method loads a new document.
reload
location.reload();
The reload() method is used to reload the current document.
Another solution.
const frame = document.getElementById("my-iframe");
frame.parentNode.replaceChild(frame.cloneNode(), frame);
Now to make this work on chrome 66, try this:
const reloadIframe = (iframeId) => {
const el = document.getElementById(iframeId)
const src = el.src
el.src = ''
setTimeout(() => {
el.src = src
})
}
In IE8 using .Net, setting the iframe.src for the first time is ok,
but setting the iframe.src for the second time is not raising the page_load of the iframed page.
To solve it i used iframe.contentDocument.location.href = "NewUrl.htm".
Discover it when used jQuery thickBox and tried to reopen same page in the thickbox iframe.
Then it just showed the earlier page that was opened.
Use reload for IE and set src for other browsers. (reload does not work on FF)
tested on IE 7,8,9 and Firefox
if(navigator.appName == "Microsoft Internet Explorer"){
window.document.getElementById('iframeId').contentWindow.location.reload(true);
}else {
window.document.getElementById('iframeId').src = window.document.getElementById('iframeId').src;
}
If you using Jquery then there is one line code.
$('#iframeID',window.parent.document).attr('src',$('#iframeID',window.parent.document).attr('src'));
and if you are working with same parent then
$('#iframeID',parent.document).attr('src',$('#iframeID',parent.document).attr('src'));
Using self.location.reload() will reload the iframe.
<iframe src="https://vivekkumar11432.wordpress.com/" width="300" height="300"></iframe>
<br><br>
<input type='button' value="Reload" onclick="self.location.reload();" />
<script type="text/javascript">
top.frames['DetailFrame'].location = top.frames['DetailFrame'].location;
</script>
If all of the above doesn't work for you:
window.location.reload();
This for some reason refreshed my iframe instead of the whole script. Maybe because it is placed in the frame itself, while all those getElemntById solutions work when you try to refresh a frame from another frame?
Or I don't understand this fully and talk gibberish, anyways this worked for me like a charm :)
Have you considered appending to the url a meaningless query string parameter?
<iframe src="myBaseURL.com/something/" />
<script>
var i = document.getElementsById("iframe")[0],
src = i.src,
number = 1;
//For an update
i.src = src + "?ignoreMe=" + number;
number++;
</script>
It won't be seen & if you are aware of the parameter being safe then it should be fine.
Reload from inside Iframe
If your app is inside an Iframe you can refresh it with replacing the location href:
document.location.href = document.location.href
If you tried all of the other suggestions, and couldn't get any of them to work (like I couldn't), here's something you can try that may be useful.
HTML
<a class="refresh-this-frame" rel="#iframe-id-0">Refresh</a>
<iframe src="" id="iframe-id-0"></iframe>
JS
$('.refresh-this-frame').click(function() {
var thisIframe = $(this).attr('rel');
var currentState = $(thisIframe).attr('src');
function removeSrc() {
$(thisIframe).attr('src', '');
}
setTimeout (removeSrc, 100);
function replaceSrc() {
$(thisIframe).attr('src', currentState);
}
setTimeout (replaceSrc, 200);
});
I initially set out to try and save some time with RWD and cross-browser testing. I wanted to create a quick page that housed a bunch of iframes, organized into groups that I would show/hide at will. Logically you'd want to be able to easily and quickly refresh any given frame.
I should note that the project I am working on currently, the one in use in this test-bed, is a one-page site with indexed locations (e.g. index.html#home). That may have had something to do with why I couldn't get any of the other solutions to refresh my particular frame.
Having said that, I know it's not the cleanest thing in the world, but it works for my purposes. Hope this helps someone. Now if only I could figure out how to keep the iframe from scrolling the parent page each time there's animation inside iframe...
EDIT:
I realized that this doesn't "refresh" the iframe like I'd hoped it would. It will reload the iframe's initial source though. Still can't figure out why I couldn't get any of the other options to work..
UPDATE:
The reason I couldn't get any of the other methods to work is because I was testing them in Chrome, and Chrome won't allow you to access an iframe's content (Explanation: Is it likely that future releases of Chrome support contentWindow/contentDocument when iFrame loads a local html file from local html file?) if it doesn't originate from the same location (so far as I understand it). Upon further testing, I can't access contentWindow in FF either.
AMENDED JS
$('.refresh-this-frame').click(function() {
var targetID = $(this).attr('rel');
var targetSrc = $(targetID).attr('src');
var cleanID = targetID.replace("#","");
var chromeTest = ( navigator.userAgent.match(/Chrome/g) ? true : false );
var FFTest = ( navigator.userAgent.match(/Firefox/g) ? true : false );
if (chromeTest == true) {
function removeSrc() {
$(targetID).attr('src', '');
}
setTimeout (removeSrc, 100);
function replaceSrc() {
$(targetID).attr('src', targetSrc);
}
setTimeout (replaceSrc, 200);
}
if (FFTest == true) {
function removeSrc() {
$(targetID).attr('src', '');
}
setTimeout (removeSrc, 100);
function replaceSrc() {
$(targetID).attr('src', targetSrc);
}
setTimeout (replaceSrc, 200);
}
if (chromeTest == false && FFTest == false) {
var targetLoc = (document.getElementById(cleanID).contentWindow.location).toString();
function removeSrc() {
$(targetID).attr('src', '');
}
setTimeout (removeSrc, 100);
function replaceSrc2() {
$(targetID).attr('src', targetLoc);
}
setTimeout (replaceSrc2, 200);
}
});
For debugging purposes one could open the console, change the execution context to the frame that he wants refreshed, and do document.location.reload()
I had a problem with this because I didnt use a timeout to give the page time to update, I set the src to '', and then set it back to the original url, but nothing happened:
function reload() {
document.getElementById('iframe').src = '';
document.getElementById('iframe').src = url;
}
but it didnt reload the site, because it is single threaded, the first change doesnt do anything, because that function is still taking up the thread, and then it sets it back to the original url, and I guess chrome doesnt reload because preformance or whatever, so you need to do:
function setBack() {
document.getElementById('iframe').src = url;
}
function reload() {
document.getElementById('iframe').src = '';
setTimeout(setBack,100);
}
if the setTimeout time is too short, it doesnt work, so if its not working, try set it to 500 or something and see if it works then.
this was in the latest version of chrome at the time of writing this.
This way avoids adding history to some browsers (an unneeded overhead). In the body section put:
<div id='IF'>
<iframe src='https://www.wolframalpha.com/input?i=Memphis%20TN%20Temperature'
style="width:5in; height:6in" // or whatever you want in your Iframe
title'Temperature'></iframe>
</div>
Then in some JAVASCRIPT you may have a function like:
function UPdate() { // Iframe
T1=document.getElementById('IF')
T2=T1.innerHTML
T1.innerHTML=T2
}

How to get original native method if it has been overridden? [duplicate]

If I have something like
alert = 0;
in another script.
This is in another script is and my code cannot load before that script.
How can I call the original alert method in my script?
Before overriding the original alert, save it.
var origAlert = alert;
alert = 0;
origAlert("foo");
Demo: http://jsfiddle.net/jfriend00/tnNE7/
If you can't save the original value, the only other way I know of to get access to it is in an iframe. Here's an example:
alert = 0;
var iframe = document.createElement("iframe");
iframe.height = 0;
iframe.width = 0;
document.body.appendChild(iframe);
iframe.contentWindow.alert.call(window, "foo");​
Working example: http://jsfiddle.net/jfriend00/waMEV/
I haven't tried this in all browsers, but it works in Chrome, IE and Firefox and I think it should work in other browsers.
Ok, I'm the first to admit this is an ugly answer, but it seems to work:
alert = 0;
var win = window.open(),
method = win.alert;
win.close();
method.call(window, "my message");
Fiddle here. Essentially, you make a new window instance and steal its alert method. The downside is that you actually have to open a new browser window, albeit briefly. I doubt this is actually a practical solution to your problem - depends what other site you're trying to work with, and how much you care about how your solution looks to the end user.
Edit: This is a combo of the above answer and jfriend00's answer, which solves the "open a new window" problem. I think this is a somewhat better option, as a) it doesn't rely on the iframe still being in the DOM when you need to call the method, and b) it should be generalizable to any window method, which jfriend00's answer probably isn't.
alert = 0;
// make a new window instance in an iframe
var iframe = document.createElement("iframe");
iframe.height = iframe.width = 0;
document.body.appendChild(iframe);
// steal the method
var method = iframe.contentWindow.alert;
// remove the evidence
document.body.removeChild(iframe);
// now use the method for your own purposes
function myAlert(message) {
method.call(window, message);
}
myAlert("foo");

Popup window accessing parent dom

I have a popup window that needs to access the parent dom to generate a print page. The structure of the print page is significantly different then the structure of the parent so a print css would not solve the problem. I basically want to popup a window and then have that window grab some data from the parent of even access the dom from the popup and generate the print page without having to go to the server again. Any ideas how i can achieve this?
Im using the standard
window.open()
to pop up a window. I need this solution to not be a hack and be cross browser compatible with all major browsers.
Thanks in advance!
Sajjan's answer is a start, but better make sure your objects are available before you try to access them:
var opener = window.opener;
if(opener) {
var oDom = opener.document;
var elem = oDom.getElementById("your element");
if (elem) {
var val = elem.value;
}
}
Otherwise, you do run the risk that the opener doesn't respond to your initial call, and that you can't get the element from it.
As jQuery, I think (based on an answer, here: how to access parent window object using jquery?):
var opener = window.opener;
if(opener) {
var elem = opener.$("#elementId");
if (elem) {
var val = elem.val(); // I forgot we're dealing with a jQuery obj at this point
}
}
window.opener.document.getElementById("your element").value
According to MDN, window.open() will return you a handle to the new window.
var popUpHandle = window.open();
With this handle you should be able to access the DOM of the PopUp. It is possible vice-versa using the already mentioned window.opener. Refer again to MDN:
var originalWindow = window.opener;
Still, your favorite search engine will provide you more details, as this is topic is fairly old and your approach has already been done a million times or more.
parent.document helped in my case.
var elem = parent.document.getElementById("overlay_modal");
if (elem) {
alert('setting attribute');
elem.setAttribute("onclick", "Windows.close('2', event);");
}

What’s the best way to reload / refresh an iframe?

I would like to reload an <iframe> using JavaScript. The best way I found until now was set the iframe’s src attribute to itself, but this isn’t very clean. Any ideas?
document.getElementById('some_frame_id').contentWindow.location.reload();
be careful, in Firefox, window.frames[] cannot be indexed by id, but by name or index
document.getElementById('iframeid').src = document.getElementById('iframeid').src
It will reload the iframe, even across domains!
Tested with IE7/8, Firefox and Chrome.
Note: As mentioned by #user85461, this approach doesn't work if the iframe src URL has a hash in it (e.g. http://example.com/#something).
If using jQuery, this seems to work:
$('#your_iframe').attr('src', $('#your_iframe').attr('src'));
Appending an empty string to the src attribute of the iFrame also reloads it automatically.
document.getElementById('id').src += '';
window.frames['frameNameOrIndex'].location.reload();
Because of the same origin policy, this won't work when modifying an iframe pointing to a different domain. If you can target newer browsers, consider using HTML5's Cross-document messaging. You view the browsers that support this feature here: http://caniuse.com/#feat=x-doc-messaging.
If you can't use HTML5 functionality, then you can follow the tricks outlined here: http://softwareas.com/cross-domain-communication-with-iframes. That blog entry also does a good job of defining the problem.
I've just come up against this in chrome and the only thing that worked was removing and replacing the iframe. Example:
$(".iframe_wrapper").find("iframe").remove();
var iframe = $('<iframe src="' + src + '" frameborder="0"></iframe>');
$.find(".iframe_wrapper").append(iframe);
Pretty simple, not covered in the other answers.
Simply replacing the src attribute of the iframe element was not satisfactory in my case because one would see the old content until the new page is loaded. This works better if you want to give instant visual feedback:
var url = iframeEl.src;
iframeEl.src = 'about:blank';
setTimeout(function() {
iframeEl.src = url;
}, 10);
A refinement on yajra's post ... I like the thought, but hate the idea of browser detection.
I rather take ppk's view of using object detection instead of browser detection,
(http://www.quirksmode.org/js/support.html),
because then you're actually testing the capabilities of the browser and acting accordingly, rather than what you think the browser is capable of at that time. Also doesn't require so much ugly browser ID string parsing, and doesn't exclude perfectly capable browsers of which you know nothing about.
So, instead of looking at navigator.AppName, why not do something like this, actually testing for the elements you use? (You could use try {} blocks if you want to get even fancier, but this worked for me.)
function reload_message_frame() {
var frame_id = 'live_message_frame';
if(window.document.getElementById(frame_id).location ) {
window.document.getElementById(frame_id).location.reload(true);
} else if (window.document.getElementById(frame_id).contentWindow.location ) {
window.document.getElementById(frame_id).contentWindow.location.reload(true);
} else if (window.document.getElementById(frame_id).src){
window.document.getElementById(frame_id).src = window.document.getElementById(frame_id).src;
} else {
// fail condition, respond as appropriate, or do nothing
alert("Sorry, unable to reload that frame!");
}
}
This way, you can go try as many different permutations as you like or is necessary, without causing javascript errors, and do something sensible if all else fails. It's a little more work to test for your objects before using them, but, IMO, makes for better and more failsafe code.
Worked for me in IE8, Firefox (15.0.1), Chrome (21.0.1180.89 m), and Opera (12.0.2) on Windows.
Maybe I could do even better by actually testing for the reload function, but that's enough for me right now. :)
for new url
location.assign("http:google.com");
The assign() method loads a new document.
reload
location.reload();
The reload() method is used to reload the current document.
Another solution.
const frame = document.getElementById("my-iframe");
frame.parentNode.replaceChild(frame.cloneNode(), frame);
Now to make this work on chrome 66, try this:
const reloadIframe = (iframeId) => {
const el = document.getElementById(iframeId)
const src = el.src
el.src = ''
setTimeout(() => {
el.src = src
})
}
In IE8 using .Net, setting the iframe.src for the first time is ok,
but setting the iframe.src for the second time is not raising the page_load of the iframed page.
To solve it i used iframe.contentDocument.location.href = "NewUrl.htm".
Discover it when used jQuery thickBox and tried to reopen same page in the thickbox iframe.
Then it just showed the earlier page that was opened.
Use reload for IE and set src for other browsers. (reload does not work on FF)
tested on IE 7,8,9 and Firefox
if(navigator.appName == "Microsoft Internet Explorer"){
window.document.getElementById('iframeId').contentWindow.location.reload(true);
}else {
window.document.getElementById('iframeId').src = window.document.getElementById('iframeId').src;
}
If you using Jquery then there is one line code.
$('#iframeID',window.parent.document).attr('src',$('#iframeID',window.parent.document).attr('src'));
and if you are working with same parent then
$('#iframeID',parent.document).attr('src',$('#iframeID',parent.document).attr('src'));
Using self.location.reload() will reload the iframe.
<iframe src="https://vivekkumar11432.wordpress.com/" width="300" height="300"></iframe>
<br><br>
<input type='button' value="Reload" onclick="self.location.reload();" />
<script type="text/javascript">
top.frames['DetailFrame'].location = top.frames['DetailFrame'].location;
</script>
If all of the above doesn't work for you:
window.location.reload();
This for some reason refreshed my iframe instead of the whole script. Maybe because it is placed in the frame itself, while all those getElemntById solutions work when you try to refresh a frame from another frame?
Or I don't understand this fully and talk gibberish, anyways this worked for me like a charm :)
Have you considered appending to the url a meaningless query string parameter?
<iframe src="myBaseURL.com/something/" />
<script>
var i = document.getElementsById("iframe")[0],
src = i.src,
number = 1;
//For an update
i.src = src + "?ignoreMe=" + number;
number++;
</script>
It won't be seen & if you are aware of the parameter being safe then it should be fine.
Reload from inside Iframe
If your app is inside an Iframe you can refresh it with replacing the location href:
document.location.href = document.location.href
If you tried all of the other suggestions, and couldn't get any of them to work (like I couldn't), here's something you can try that may be useful.
HTML
<a class="refresh-this-frame" rel="#iframe-id-0">Refresh</a>
<iframe src="" id="iframe-id-0"></iframe>
JS
$('.refresh-this-frame').click(function() {
var thisIframe = $(this).attr('rel');
var currentState = $(thisIframe).attr('src');
function removeSrc() {
$(thisIframe).attr('src', '');
}
setTimeout (removeSrc, 100);
function replaceSrc() {
$(thisIframe).attr('src', currentState);
}
setTimeout (replaceSrc, 200);
});
I initially set out to try and save some time with RWD and cross-browser testing. I wanted to create a quick page that housed a bunch of iframes, organized into groups that I would show/hide at will. Logically you'd want to be able to easily and quickly refresh any given frame.
I should note that the project I am working on currently, the one in use in this test-bed, is a one-page site with indexed locations (e.g. index.html#home). That may have had something to do with why I couldn't get any of the other solutions to refresh my particular frame.
Having said that, I know it's not the cleanest thing in the world, but it works for my purposes. Hope this helps someone. Now if only I could figure out how to keep the iframe from scrolling the parent page each time there's animation inside iframe...
EDIT:
I realized that this doesn't "refresh" the iframe like I'd hoped it would. It will reload the iframe's initial source though. Still can't figure out why I couldn't get any of the other options to work..
UPDATE:
The reason I couldn't get any of the other methods to work is because I was testing them in Chrome, and Chrome won't allow you to access an iframe's content (Explanation: Is it likely that future releases of Chrome support contentWindow/contentDocument when iFrame loads a local html file from local html file?) if it doesn't originate from the same location (so far as I understand it). Upon further testing, I can't access contentWindow in FF either.
AMENDED JS
$('.refresh-this-frame').click(function() {
var targetID = $(this).attr('rel');
var targetSrc = $(targetID).attr('src');
var cleanID = targetID.replace("#","");
var chromeTest = ( navigator.userAgent.match(/Chrome/g) ? true : false );
var FFTest = ( navigator.userAgent.match(/Firefox/g) ? true : false );
if (chromeTest == true) {
function removeSrc() {
$(targetID).attr('src', '');
}
setTimeout (removeSrc, 100);
function replaceSrc() {
$(targetID).attr('src', targetSrc);
}
setTimeout (replaceSrc, 200);
}
if (FFTest == true) {
function removeSrc() {
$(targetID).attr('src', '');
}
setTimeout (removeSrc, 100);
function replaceSrc() {
$(targetID).attr('src', targetSrc);
}
setTimeout (replaceSrc, 200);
}
if (chromeTest == false && FFTest == false) {
var targetLoc = (document.getElementById(cleanID).contentWindow.location).toString();
function removeSrc() {
$(targetID).attr('src', '');
}
setTimeout (removeSrc, 100);
function replaceSrc2() {
$(targetID).attr('src', targetLoc);
}
setTimeout (replaceSrc2, 200);
}
});
For debugging purposes one could open the console, change the execution context to the frame that he wants refreshed, and do document.location.reload()
I had a problem with this because I didnt use a timeout to give the page time to update, I set the src to '', and then set it back to the original url, but nothing happened:
function reload() {
document.getElementById('iframe').src = '';
document.getElementById('iframe').src = url;
}
but it didnt reload the site, because it is single threaded, the first change doesnt do anything, because that function is still taking up the thread, and then it sets it back to the original url, and I guess chrome doesnt reload because preformance or whatever, so you need to do:
function setBack() {
document.getElementById('iframe').src = url;
}
function reload() {
document.getElementById('iframe').src = '';
setTimeout(setBack,100);
}
if the setTimeout time is too short, it doesnt work, so if its not working, try set it to 500 or something and see if it works then.
this was in the latest version of chrome at the time of writing this.
This way avoids adding history to some browsers (an unneeded overhead). In the body section put:
<div id='IF'>
<iframe src='https://www.wolframalpha.com/input?i=Memphis%20TN%20Temperature'
style="width:5in; height:6in" // or whatever you want in your Iframe
title'Temperature'></iframe>
</div>
Then in some JAVASCRIPT you may have a function like:
function UPdate() { // Iframe
T1=document.getElementById('IF')
T2=T1.innerHTML
T1.innerHTML=T2
}

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