Re: [visualization-api] Google charts just often started breaking with cannot read property __closure_events_fn_XXXXX of null

[Daniel LaLiberte]

The only thing that has changed recently is the loader, so if there is a problem related to the loader, it would seem to be timing related.  It is plausible that, for example, we are not properly detecting the window has finished loading, in which case, elements might not u ready.

But from what I can see in the error you reported (in a version of your page that uses 45.2?) you are doing a draw in response to a resize event, so either the page has finished loading and the charts have been drawn previously, or perhaps there is a resize event occurring before the page has finished loading.  You'll have to isolate this problem in a simpler case so we will have a chance of finding a resolution.

On Thu, Jun 8, 2017 at 11:39 AM, Siddharth Dalal <si...@chartiq.com> wrote:

For examples see:

https://advisorhub.com/markets/

http://demo.chartiq.com/widgets/2.0/portal2.html

Thanks!!

Sidd

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Daniel LaLiberte

dlaliberte@Google.com   5CC, Cambridge MA

[Siddharth Dalal]

It was with 45.1. I'll see if I can make a simpler example. The chart is initially drawn and does get redrawn on window resize. In some charts, I maintain aspect ratio so the div height gets resized as the width gets resized but this is not what causes the error because it happens in charts where the only thing I do on window resize is chartwrapper.draw. I use an array of chartWrappers, sometimes multiple arrays of chartwrappers to manage multiple charts on the screen. 

On Sunday, June 11, 2017 at 7:49:02 PM UTC-4, Daniel LaLiberte wrote:

The only thing that has changed recently is the loader, so if there is a problem related to the loader, it would seem to be timing related.  It is plausible that, for example, we are not properly detecting the window has finished loading, in which case, elements might not u ready.

But from what I can see in the error you reported (in a version of your page that uses 45.2?) you are doing a draw in response to a resize event, so either the page has finished loading and the charts have been drawn previously, or perhaps there is a resize event occurring before the page has finished loading.  You'll have to isolate this problem in a simpler case so we will have a chance of finding a resolution.

On Thu, Jun 8, 2017 at 11:39 AM, Siddharth Dalal <si...@chartiq.com> wrote:

For examples see:

https://advisorhub.com/markets/

http://demo.chartiq.com/widgets/2.0/portal2.html

Thanks!!

Sidd

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Daniel LaLiberte

dlali...@Google.com   5CC, Cambridge MA