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Object.is

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Original file line number	Diff line number	Diff line change
`@@ -272,3 +272,21 @@ const { name: pageName } = obj;`
`272`	`272`	`console.log(pageName) // JSsnippets`
`273`	`273`	```
`274`	`274`
	`275`	`+`
	`276`	`+`
	`277`	`+# The Object.is() method determines whether two values are the same value`
	`278`	`+`
	`279`	`+`
	`280`	+```javascript
	`281`	`+Object.is('foo','foo'); // true`
	`282`	`+`
	`283`	`+Object.is(null, null); // true`
	`284`	`+`
	`285`	`+Object.is(Nan, Nan); // true 😱`
	`286`	`+`
	`287`	`+const foo = { a: 1 };`
	`288`	`+const bar = { a: 1 };`
	`289`	`+Object.is(foo, foo); // true`
	`290`	`+Object.is(foo, bar); // false`
	`291`	`+`
	`292`	+```

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