frontend: add undefined check in pin module

wang0618 · wang0618 · commit c9abb3723034 · 2022-02-25T11:54:53.000+08:00
diff --git a/webiojs/src/models/pin.ts b/webiojs/src/models/pin.ts
@@ -7,7 +7,7 @@ import {AfterCurrentOutputWidgetShow} from "../handlers/output";
 let name2input: { [k: string]: InputItem } = {};
 
 export function GetPinValue(name: string) {
-    if(!document.contains(name2input[name].element[0]))
+    if (name2input[name] == undefined || !document.contains(name2input[name].element[0]))
         return undefined;
     return name2input[name].get_value();
 }

Original file line number	Diff line number	Diff line change
`@@ -7,7 +7,7 @@ import {AfterCurrentOutputWidgetShow} from "../handlers/output";`
`7`	`7`	`let name2input: { [k: string]: InputItem } = {};`
`8`	`8`
`9`	`9`	`export function GetPinValue(name: string) {`
`10`		`- if(!document.contains(name2input[name].element[0]))`
	`10`	`+ if (name2input[name] == undefined \|\| !document.contains(name2input[name].element[0]))`
`11`	`11`	`return undefined;`
`12`	`12`	`return name2input[name].get_value();`
`13`	`13`	`}`