That definitely looks like it would address the issues I'm seeing. Thanks for pointing it out!
On Sun, Nov 13, 2016 at 12:53 AM أحمد حبنكة <[email protected]> wrote: > > > بتاريخ الأربعاء، 9 نوفمبر، 2016 10:11:06 ص UTC+2، كتب Austin Bingham: > > I'm trying to use Chart.js from my elm app, and I'm running into some > errors that I can't sort out. In short, I've got a elm-to-javascript port > that takes in a data structure describing the chart I want to draw. Then on > the javascript side I've got a subscription to that port that renders that > chart. A trimmed version of that function looks like this: > > var brooksChart = null; > > function chart(val) { > var datasets = ... // calculate data sets from `val` > > var ctx = document.getElementById("bark-spider-canvas"); > > if (brooksChart) { > brooksChart.destroy(); > } > > brooksChart = new Chart(ctx, { > type: 'line', > data: { > datasets: datasets > }, > options: { > scales: { > xAxes: [{ > type: 'linear', > position: 'bottom' > }] > } > } > }); > }; > > When I run this and pass data into the port, the chart is rendered > correctly. But, at some point after the "new Chart(...)" call completes, I > get errors in the javascript console like this: > > bark_spider.js:8139 Uncaught TypeError: Cannot read property 'childNodes' > of undefined(…)addDomNodesHelp @ bark_spider.js:8139addDomNodesHelp @ > bark_spider.js:8147addDomNodesHelp @ bark_spider.js:8147addDomNodesHelp @ > bark_spider.js:8147addDomNodesHelp @ bark_spider.js:8147addDomNodes @ > bark_spider.js:8066applyPatches @ bark_spider.js:8195updateIfNeeded @ > bark_spider.js:7232 > > The fallout of this seems to be that the elm runtime gets confused, at > least insofar as I don't receive Msgs that I ought to be receiving. In > fact, if I take the call to "new Chart(...)" out, then my app works just > fine (except of course that charts aren't rendered). > > So, does anyone have any idea what I'm going wrong? This seems like pretty > standard use of both ports and chart.js, but clearly I'm missing something. > > > I think your problem is related to this issue : > https://github.com/elm-lang/html/issues/19 , the feature request is added > in this meta issue : https://github.com/elm-lang/html/issues/53 So I > think it's only a matter of time before we have true interop with JS :) > > -- > You received this message because you are subscribed to the Google Groups > "Elm Discuss" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Elm Discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
