I have a button on my page that, when clicked, will try to go out and download a file from a given URL on a different domain than my page's domain. I am trying to be able to handle both cases successful download vs error. The above code is run on a button click. What I'm seeing is that the w.
What is wrong with using this as a method of downloading a file? For handling the download of the file, the download attribute could be a solution with polyfill.
But for the handling the HTTP errors in my opinion the best solution is using some back-end proxy which will check the HTTP headers and also will force the browser to download a specific file.
Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 5 years, 5 months ago. Visit the site with the error. In the Error Console window you will see the error show on line Or you can press the following keyboard keys:.
The Error Console will pop up. You can move the window to the side while you visit your site. You will see the errors list when you visit the site with the broken code. The image to the right shows the error on line Click Preferences. Visit your webpage that is broken and check the Error Console at the bottom. The errors will list when you refresh your browser.
In this case you can see the error on line 33 in the snapshot to the right. Unfortunately if safari is not showing you all the information your best bet would be to see if you can replicate the error in Chrome or Firefox as they have much more robust developer tools and troubleshoot from there.
If you cannot see the error in other browsers i would recommend putting in a bug report with Apple to see if they can see why the browser is not giving you the information it should. Javascript is mostly processed on the browser side.
Browsers now have developer tools built into them so you can work on scripts, etc. A window will appear at the bottom giving you access to several tools to help you with your site scripts. I know this is an old thread, but are the moderators John-Paul and Ann still available to assist?
Just saying what line is less helpful that showing context. Now that you have diagnosed your error, you should make your support forum request. Go to the troubleshooting forum. You must be logged in to submit feedback. Skip to content WordPress. Skip to content. Was this article helpful? We can choose between "anonymous" no cookies sent, one server-side header needed and "use-credentials" sends cookies too, two server-side headers needed. We have the full error report. Normally, images are loaded when they are created.
The browser needs to load it first. The browser starts loading the image and remembers it in the cache. Later, when the same image appears in the document no matter how , it shows up immediately.
Create a function preloadImages sources, callback that loads all images from the array sources and, when ready, runs callback.
In other words, the callback is executed when all images are either loaded or errored out. The function is useful, for instance, when we plan to show a gallery with many scrollable images, and want to be sure that all images are loaded.
In the source document you can find links to test images, and also the code to check whether they are loaded or not. It should output Open a sandbox for the task.
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