Re: [Proto-Scripty] Image dropping to canvas is not working properly

[Walter Lee Davis]

> On Jul 6, 2016, at 3:32 AM, Manjula Asirwatham  
> wrote:
> 
> Hi,
> 
> We have an site www.rightgifting.com which customer can create personalized 
> gifts. we use fabric JS to do the design of the products. But when the 
> customer crop the image is doesn't fall to canvas at first attempt. if we 
> refresh the browser and re do the same it is working sometimes. can you 
> suggest us a solution.

If you look in the Web Inspector in Safari (or similar developer console in any 
other browser) you will see a couple of errors, starting with the missing 
jQuery 1.8.3 min file. That cascades into a JS reference error "Can't fine 
variable: exports". I have no idea whether that's relevant to your particular 
issue (didn't want to hunt around to find the exact page where your canvas drop 
happens -- could you post a direct link or some directions to reproduce the 
error?), but in my experience, once you have a JS error in your page, you have 
a non-trivial chance of having knock-on issues with unrelated scripts in the 
same page. Try chasing that edge of the problem first, and see if the rest 
clears up. 

These sorts of "Heisenbugs" are particularly painful, but if reloading helps, 
maybe the problem is in a listener that is not being loaded properly, or maybe 
it's just HTTP gremlins swallowing your resources every once in a while. 

If you're using pjax or Turbolinks to speed up page loads, you may need to load 
your script on a different event than dom:loaded, since that will only fire 
once, when the outer page shell loads for the first time (this is one way to 
end up with a page that works on reload, but not when you navigate to that page 
through a link).

Walter


> 
> Regards,
> Manjula A.
> 
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[Proto-Scripty] Image dropping to canvas is not working properly

[Manjula Asirwatham]

Hi,

We have an site www.rightgifting.com which customer can create personalized 
gifts. we use fabric JS to do the design of the products. But when the 
customer crop the image is doesn't fall to canvas at first attempt. if we 
refresh the browser and re do the same it is working sometimes. can you 
suggest us a solution.

Regards,
Manjula A.

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