Prevent error when removing data in point sample (#455)

kurkle · web-flow · commit f0966577b4e8 · 2021-08-24T09:48:18.000+03:00
diff --git a/docs/samples/types/point.md b/docs/samples/types/point.md
@@ -72,7 +72,8 @@ const config = {
 // <block:utils:3>
 function value(ctx, datasetIndex, index, prop) {
   const meta = ctx.chart.getDatasetMeta(datasetIndex);
-  return meta.controller.getParsed(index)[prop];
+  const parsed = meta.controller.getParsed(index);
+  return parsed ? parsed[prop] : NaN;
 }
 // </block:utils>
 

Original file line number	Diff line number	Diff line change
`@@ -72,7 +72,8 @@ const config = {`
`72`	`72`	`// <block:utils:3>`
`73`	`73`	`function value(ctx, datasetIndex, index, prop) {`
`74`	`74`	`const meta = ctx.chart.getDatasetMeta(datasetIndex);`
`75`		`- return meta.controller.getParsed(index)[prop];`
	`75`	`+ const parsed = meta.controller.getParsed(index);`
	`76`	`+ return parsed ? parsed[prop] : NaN;`
`76`	`77`	`}`
`77`	`78`	`// </block:utils>`
`78`	`79`