Add a check to make sure that mainsnak["datavalue"] exists before che…

…cking its value.
Teester · Jul 11, 2024 · f2c96a5 · f2c96a5
1 parent 8351197
commit f2c96a5
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/script.js b/script.js
@@ -49,7 +49,7 @@
             let statements = claims[claim];
             for (let statement in statements) {
                 let mainsnak = statements[statement]["mainsnak"];
-                if (mainsnak["datatype"] == "wikibase-item") {
+                if (mainsnak["datavalue"] && mainsnak["datatype"] == "wikibase-item") {
                     if (!item_list.includes(mainsnak["datavalue"]["value"]["id"])) {
                         item_list.push(mainsnak["datavalue"]["value"]["id"]);
                     }