Javascript Detect When File Download __FULL_

I have a page that allows the user to download a dynamically-generated file. It takes a long time to generate, so I'd like to show a "waiting" indicator. The problem is, I can't figure out how to detect when the browser has received the file so that I can hide the indicator.

I'm requesting a hidden form, which POSTs to the server, and targets a hidden iframe for its results. This is, so I don't replace the entire browser window with the result. I listen for a "load" event on the iframe, hoping that it will fire when the download is complete.

Javascript Detect When File Download Complete

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The core problem is that the web browser does not have an event that fires when page navigation is cancelled but does have an event that fires when a page completes loading. Anything outside of a direct browser event is going to be a hack with pros and cons.

The reason that you can't do the download and file generation all in one go is due to the php header() function. If you use header(), you're changing the script to something other than a web page and jQuery will never recognize the download script as being 'loaded'. I know this may not necessarily be detecting when a browser receives a file, but your issue sounded similar to mine.

If you don't want to generate and store the file on the server, are you willing to store the status, e.g. file-in-progress, file-complete? Your "waiting" page could poll the server to know when the file generation is complete. You wouldn't know for sure that the browser started the download but you'd have some confidence.

If you have downloaded a file, which is saved, as opposed to being in the document, there isn't any way to determine when the download is complete, since it is not in the scope of the current document, but a separate process in the browser.

I'm trying to detect when a map has been zoomed in or out, and when that is complete to execute a function. I have tried using watchUtils.watch on both the view.zoom and view.extent properties, but am finding that the callbacks get executed too many times.

The upload in parallel works fine. The problem is that I need to detect when all of them have finished, because I have to do a final submit, but only if all the uploads are completed.

But imagine that you have other code that needs to only run when the image has completed loading, such as a command that performs red-eye removal on the image in the lightbox. While ideally this command wouldn't even be executed if the image hasn't fully loaded, for improved reliability you want to check to ensure this is the case.

\n But imagine that you have other code that needs to only run when the image has\n completed loading, such as a command that performs red-eye removal on the image in the\n lightbox. While ideally this command wouldn't even be executed if the image hasn't fully\n loaded, for improved reliability you want to check to ensure this is the case.\n

The scrollend event fires when element scrolling has completed. Scrolling is considered completed when the scroll position has no more pending updates and the user has completed their gesture.

\n The scrollend event fires when element scrolling has completed.\n Scrolling is considered completed when the scroll position has no more pending updates and the user has completed their gesture.\n

Update:It seems I should clarify that I'm not trying to send a request - I'm developing a content script and I need to be able to detect the web page's AJAX requests (not make my own), so I can execute a function when a response is detected.

i hard that it is always better to move all script at the bottom of the page and as a result page load very fast. so today i did that and found a problem that when javascript files and my javascript function was loading then i click on a button which was attached with jquery function. the result i got page reload. which i don't want. to avoid this situation we have 2 choice. one is let all script tag should be download first before other page content download and second one is just detect javascript file or script tag download in client side and functions are ready to call. if javascript files are downloading and function can be called then button click should call the righ js function other wise it will return false.

From the scope of the outer function, is there any way to detect whether the async and sync work of the inner function is complete, and for this behavior to apply to any function that I pass into outer?

When the user opens the page, they are presented with a list of current records. They check records they wish to process. The checked records are then packaged and the user is presented with the download "Save" or "Open" box. when that operation is complete then the ajax request should execute.

I want to prevent navigation away from this page whilst ajax uploads are happening so, so far so good.

During uploading ajax is firing to let the uploads happen and the progress bars for each upload to progress.

The ajax requests end when:

1) The upload or uploads is/are completed or

2) The orange cross on the individual image is clicked (in which case 'that' upload is aborted and the rest of the uploads continue) or

2) I have tried (rather crudely) to 'count' the open ajax connections with a simple global variable ($companyImagesUploading++) each time an ajax.send() occurs. And then using $companyImagesUploading-- when the abort or complete handler is activated. By then creating a listener (of some sort) to this variable, when it becomes 0 this might work but this whole methodology seems very crude.

I've tried a few more ways but all don't seem to work efficiently or correctly.

In my experience, adding -map 0:1 option to ffmpeg (in order to decode only audio) can significantly speed up processing, but at a price of false negatives. E.g. it rarely detects incomplete MP4 files, because audio data usually takes about 10% of the total clip, so the probability that an arbitrary cut through a file will damage the audio track is also about 10%.

Before the scrollend event, there was no reliable way to detect that a scrollwas complete. This meant that events would fire late or while a user's fingerwas still down on the screen. This unreliability in knowing when scroll hasactually ended, led to bugs and a poor experience for the user.

The scrollend event fires when:- The browser is no longer animating or translating scroll.- The user's touch has been released.- The user's pointer has released the scroll thumb.- The user's keypress has been released.- Scroll to fragment has completed.- Scroll snap has completed.- scrollTo() has completed.- The user has scrolled the visual viewport.

A reason this event took so long to come to the web platform was due to the manysmall details that needed specification details. One of the most complex areaswas articulating the scrollend details for the VisualViewportversus the document. Consider a webpage that you zoom in on. You can scrollaround when in this zoomed state, and it's not necessarily scrolling thedocument. Rest assured that even this visual viewport user driven scrollinteraction will emit the scrollend event once it completes.

Intersection Observer API is a relatively new API in browsers. It makes it really simple to detect when an element enters the viewport, and take an action when it does. In the previous method, we had to bind events, keep performance in mind, and implement a way to calculate if the element was in the viewport or not. The Intersection Observer API makes this really simple, helps avoid the math, and delivers great performance.

While using Intersection Observers to load the image or using low-quality image placeholders provides better loading performance and user experience, there is another simple trick that you can use to ensure that the images are always loaded completely when they enter the viewport - introduce a margin to the trigger point for images.

We discussed that the "state" is a component's private matter. State can be dynamic and might need modifications. We also need to perform resource cleanups when components are destroyed. ReactJs provides various life-cycle methods to detect the phases and take action.

PM2's clustering feature works best when your application is completelystateless. You won't need any codemodifications to scale on the same server or even across multiple servers ifyour app doesn't maintain any state in individual processes. If your applicationisn't stateless, you'll likely get better results directly using the native clustermodule.

By default, when a user selects a place, autocomplete returns all of the available data fields for the selected place, and you will be billed accordingly. Use Autocomplete.setFields() to specify which place data fields to return. Read more about the PlaceResult object, including a list of place data fields that you can request. To avoid paying for data that you don't need, be sure to use Autocomplete.setFields() to specify only the place data that you will use.

AutocompleteService.getPlacePredictions()uses session tokens to group together autocomplete requests for billingpurposes. Session tokens group the query and selection phases of a userautocomplete search into a discrete session for billing purposes. The sessionbegins when the user starts typing a query, and concludes when they select aplace. Each session can have multiple queries, followed by one place selection.Once a session has concluded, the token is no longer valid. Your app mustgenerate a fresh token for each session. We recommend using session tokens forall autocomplete sessions. If the sessionToken parameter isomitted, or if you reuse a session token, the session is charged as if nosession token was provided (each request is billed separately).

Some payment methods require additional steps, such as authentication, to complete the payment process. Stripe.js handles these automatically when confirming the PaymentIntent, but if you have an advanced integration, you might want to handle these manually. ff782bc1db