Commit 4e4144b

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fix: spell correction to existence

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Lines changed: 1 addition & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -322,7 +322,7 @@ alert( !key/! in user ); // true, takes the name from key and checks for suc`
`322`	`322`	```
`323`	`323`
`324`	`324`	````smart header="Using \"in\" for properties that store `undefined`"
`325`		-Usually, the strict comparison `"=== undefined"` check the property existance just fine. But there's a special case when it fails, but `"in"` works correctly.
	`325`	+Usually, the strict comparison `"=== undefined"` check the property existence just fine. But there's a special case when it fails, but `"in"` works correctly.
`326`	`326`
`327`	`327`	It's when an object property exists, but stores `undefined`:
`328`	`328`

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