From 4e4144b0840dc8950fbe950a0246edf3ed52e77a Mon Sep 17 00:00:00 2001 From: Zeel Date: Tue, 21 Jan 2020 16:16:09 +0530 Subject: [PATCH] fix: spell correction to existence --- 1-js/04-object-basics/01-object/article.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/1-js/04-object-basics/01-object/article.md b/1-js/04-object-basics/01-object/article.md index ea015e7c..78ae0256 100644 --- a/1-js/04-object-basics/01-object/article.md +++ b/1-js/04-object-basics/01-object/article.md @@ -322,7 +322,7 @@ alert( *!*key*/!* in user ); // true, takes the name from key and checks for suc ``` ````smart header="Using \"in\" for properties that store `undefined`" -Usually, the strict comparison `"=== undefined"` check the property existance just fine. But there's a special case when it fails, but `"in"` works correctly. +Usually, the strict comparison `"=== undefined"` check the property existence just fine. But there's a special case when it fails, but `"in"` works correctly. It's when an object property exists, but stores `undefined`: