We had ParticlesJS working # https://digital.insightdesign.com.au/, overlaying the full width/height image slider in the first section below the header.
However, it stopped working today with no changes made to the site.
The console says: Uncaught ReferenceError: particlesJS is not defined
We are calling:
<script type="text/javascript" src="https://cdn.jsdelivr.net/particles.js/2.0.0/particles.min.js" defer data-deferred="1"></script>
(on line 44 of the website).
There are no resources generating a 404, and no other JS errors in console.
Help appreciated.
You have to remove defer from:
<script src="https://cdn.jsdelivr.net/particles.js/2.0.0/particles.min.js" defer data-deferred="1"></script>
or add the particlesJS code inside a DOMContentLoaded event like this:
window.addEventListener('DOMContentLoaded', (event) => {
/* ---- particles.js config ---- */
particlesJS("particles-js", {
"particles": {
"number": {
"value": 380,
"density": {
"enable": true,
"value_area": 3600
}
},
...
}
...
});
});
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script
defer
This Boolean attribute is set to indicate to a browser that the
script is meant to be executed after the document has been parsed, but
before firing DOMContentLoaded.
Scripts with the defer attribute will prevent the DOMContentLoaded
event from firing until the script has loaded and finished evaluating.
This attribute must not be used if the src attribute is absent (i.e.
for inline scripts), in this case it would have no effect.
Scripts with the defer attribute will execute in the order in which
they appear in the document.
Related
I am new to Google analytics and Google Tag Manager and currently I am confused with using external JS libraries. Any help would be appreciated.
I need to use 'https://cdnjs.cloudflare.com/ajax/libs/fingerprintjs2/2.1.0/fingerprint2.min.js' in my custom javascript code in google tag manager. I have tried to include the script as a custom html or even custom template. The script is successfully added to the head and I see it in the inspection. But in my custom JS code , when I try to call and use library functions , it throws exception saying that the lib object is not defined.
I tried sequencing tags also , to make sure script loading tags are fired before my custom js code execution. But that did not fix the problem.
Any suggestion on how to include external JS libraries in your GTM custom JS code? I hope I explained the problem properly.
Thanks !
This example posted by jwest75674 should help. As you need to declare var = fingerprint in your script to allow Google Tag Manager to capture the data after the script has run
In short, you can copy the script below an add it as Custom HTML Tag in GTM (https://github.com/Valve/fingerprintjs2)
<script src="https://cdn.jsdelivr.net/npm/fingerprintjs2#2.1.0/dist/fingerprint2.min.js"></script>
<script type="text/javascript">
var fingerprint; // Variable to allow the Google Tag Manager to capture the data after this script has run.
if (window.requestIdleCallback) {
requestIdleCallback(function () {
Fingerprint2.get(function (components) {
console.log(components) // an array of components: {key: ..., value: ...}
})
})
} else {
setTimeout(function () {
Fingerprint2.get(function (components) {
console.log(components) // an array of components: {key: ..., value: ...}
})
}, 500)
}
</script>
When I try to modify pages/_document.js to add the FastClick event registration (see below) it complains that ReferenceError: document is not defined. I guess it's because it's executed on the server and the document is not defined there. Any way to resolve it?
if ('addEventListener' in document) {
document.addEventListener('DOMContentLoaded', function() {
FastClick.attach(document.body)
}, false)
}
pages/_document.js only rendered on server according to next.js documentation.
I suggest to use that code in pages/_app.js which will be shared between all components.
you can use process.browser to make sure your code is being executed in the front end only.
if (process.browser) {
document.addEventListener('DOMContentLoaded', function() {
FastClick.attach(document.body)
}, false)
}
I want to dynamicaly inject and load an iframe inside the background page. But every time, the request is canceled.
http://i.imgur.com/Puto33c.png
That used to work a week ago. I don't know where I'm wrong.
To reproduce this issue, I created a small extension :
manifest.js :
{
"name": "iframe background",
"version": "1.0.0",
"manifest_version": 2,
"browser_action": {
"default_title": "iframe"
},
"background": {
"persistent": false,
"scripts": ["background.js"]
}
}
background.js :
chrome.browserAction.onClicked.addListener(function() {
var iframe = document.createElement('iframe');
iframe.src = 'http://localhost:3000/';
iframe.onload = function() {
console.log(iframe.contentDocument); // return null
};
document.body.appendChild(iframe);
});
The page to load is not blocked by X-Frame-Options SAMEORIGIN.
I tried to put the iframe directly within a HTML background page with no luck.
I also tried to add an content_security_policy :
"content_security_policy": "script-src 'self'; object-src 'self'; frame-src 'self' http://localhost:3000/"
But the iframe still doesn't load.
Does someone has a workaround or a solution to this problem?
Thanks !
Chrome 58.0.3014.0 enables Site Isolation for extensions by default that makes the iframe load in a different renderer process handled by a separate chrome.exe OS process.
The 'canceled' message means that the extension's chrome.exe process canceled the request and it was handled by a different hidden chrome.exe process.
The correct approach is to declare a content script that will automatically run on the iframe URL and communicate to the background page. Note: only JSON-fiable data may be passed, in other words, you can pass innerHTML but not DOM elements. This is easy to handle though via DOMParser.
manifest.json additions:
"content_scripts": [{
"matches": ["http://localhost:3000/*"],
"js": ["iframe.js"],
"run_at": "document_end",
"all_frames": true
}],
iframe.js:
var port = chrome.runtime.connect();
// send something immediately
port.postMessage({html: document.documentElement.innerHTML});
// process any further messages from the background page
port.onMessage.addListener(msg => {
..............
// reply
port.postMessage(anyJSONfiableObject); // not DOM elements!
});
background.js:
var iframePort;
chrome.browserAction.onClicked.addListener(() => {
document.body.insertAdjacentHTML('beforeend',
'<iframe src="http://localhost:3000/"></iframe>');
});
chrome.runtime.onConnect.addListener(port => {
// save in a global variable to access it later from other functions
iframePort = port;
port.onMessage.addListener(msg => {
if (msg.html) {
const doc = new DOMParser().parseFromString(msg.html, 'text/html');
console.log(doc);
alert('Received HTML from the iframe, see the console');
}
});
});
See also a similar QA: content.js in iframe from chrome-extension popup
I have some "classic" tiles on a Plone 4.3.6 site, which contain a richtext field and two RelationChoice fields using plone.formwidget.contenttree widgets.
I have installed plone.app.widgets 1.8.0 (along with p.a.contenttypes), and I can't get the new TinyMCE and the new relateditems pattern widget to work properly. If I load the tile view URL directly (at the ##edit-tile/.... URL), the widgets actually show up and work properly. But in the iframe/overlay, they don't.
The prep-overlay looks like this:
jQuery('.tile-editable').each(function () {
jQuery(this).find('a.tile-edit-link, a.tile-delete-link').
prepOverlay({
subtype: 'iframe',
config: {
onLoad: function (e) {
jQuery('body').addClass('noscroll');
return true;
},
onClose: function() {
jQuery('body').removeClass('noscroll');
location.reload();
}
}
});
});
The iframe loads ++resource++plone.app.widgets.js in the header, and the fields are given the pat-relateditems and pat-tinymce classes as expected. But the init method inside the relateditems pattern is never called. I suppose the iframe DOM is not parsed for patterns, but I don't know where to look for the cause of this.
FWIW, there is an error in the console:
Uncaught Error: Mismatched anonymous define() module: function (){return eb}
http://requirejs.org/docs/errors.html#mismatch
in plone.app.widgets.js:166, but I don't know where that's coming from, or if it matters.
Are there any tricks to getting mockup widgets to work in an ifram overlay?
To reinitialise all patterns you can do:
var registry = require("pat-registry");
registry.scan(SELECTOR); // document or iframe or wherever you want to rescan all patterns.
IMHO you could do this on the onLoad method.
I have a contentscript that essentially does a console.log to indicate that it has been injected into a page, and my manifest.json has all_frames set to true.
As a result, if I go to http://www.reddit.com/r/videos I see a message per frame and if I click on a video, I will also see a message coming from a script injected into the video's iframe. This indicates to me that if the page is dynamically modified to include an iframe, the contentscript will be injected into it.
When I go to http://www.html5video.org, I only get a message from one frame, but if I look at the DOM I see that there is an iframe for the video so I would expect my contentscript to be injected into it, but it is not.
My ultimate goal is to get a selector for the video on the page and I would expect to be able to do so by injecting code that looks for it into the iframe.
Help is appreciated.
I suspect that Chrome will inject your content scripts into an IFRAME that is part of the original page source which is the case with the reddit.com example - the IFRAMEs are part of the original page so Chrome can and will inject into those. For the html5video link the IFRAME is not part of the original source. However, if you inspect the elements you can see the IFRAME which suggests to me that the IFRAME has been dynamically loaded to the DOM. I see the same behaviour with an extension I have written so it seems consistent.
If you need to inject into the IFRAME then perhaps you can hook the DOM creation event and take the action you require:
document.addEventListener('DOMNodeInserted', onNodeInserted, false);
UPDATE:
What about this for http://html5video.org/ - using the following content_script code I can get the IFRAME and then VIDEO tag. Note: This approach/concept should also work pretty well too for Reddit.
content_script.js
console.log("content script for: " + document.title);
var timer;
document.addEventListener('DOMNodeInserted', onNodeInserted, false);
function onNodeInserted(e)
{
if(timer) clearTimeout(timer);
timer = setTimeout("doSomething()", 250);
}
function doSomething()
{
$media = $(".mwEmbedKalturaIframe");
console.log($media);
$video = $media.contents().find("video");
console.log($video);
}
manifest.json
{
// Required
"name": "Foo Extension",
"version": "0.0.1",
// Recommended
"description": "A plain text description",
"icons": { "48": "foo.png" },
//"default_locale": "en",
// Pick one (or none)
"browser_action": {
"default_icon": "Foo.png", // optional
"default_title": "Foo Extension" // optional; shown in tooltip
},
"permissions": [ "http://*/", "https://*/", "tabs" ],
"content_scripts": [
{
"matches": ["http://*/*", "https://*/*"],
"js": ["jquery-1.7.1.min.js", "content_script.js" ],
"run_at": "document_idle",
"all_frames": true
}
]
}
See also: jQuery/JavaScript: accessing contents of an iframe