Aug 25, 2023 · Aug 28, 2023
diff --git a/1-js/05-data-types/12-json/article.md b/1-js/05-data-types/12-json/article.md

 ```js
 let json = `{
  *!*name*/!*: "John",                     // mistake: property name without quotes
  "surname": *!*'Smith'*/!*,               // mistake: single quotes in value (must be double)
  *!*'isAdmin'*/!*: false                  // mistake: single quotes in key (must be double)
  "birthday": *!*new Date(2000, 2, 3)*/!*, // mistake: no "new" is allowed, only bare values
  "friends": [0,1,2,3]              // here all fine
  *!*name*/!*: "John",                      // mistake: property name without quotes
  "surname": *!*'Smith'*/!*,                // mistake: single quotes in value (must be double)
  *!*'isAdmin'*/!*: false,                  // mistake: single quotes in key (must be double)
  "birthday": *!*new Date(2000, 2, 3)*/!*,  // mistake: no "new" is allowed, only bare values
  "gender": "male"*!* */!*                  // mistake: missing comma after non-last property
  "friends": [0,1,2,3]*!*,*/!*              // mistake: there should not be a comma after the last property
 }`;
 ```
Original file line number	Diff line number	Diff line change
Expand Up		@@ -441,11 +441,12 @@ Here are typical mistakes in hand-written JSON (sometimes we have to write it fo

		```js
		let json = `{
		!name/!: "John", // mistake: property name without quotes
		"surname": !'Smith'/!, // mistake: single quotes in value (must be double)
		!'isAdmin'/!: false // mistake: single quotes in key (must be double)
		"birthday": !new Date(2000, 2, 3)/!, // mistake: no "new" is allowed, only bare values
		"friends": [0,1,2,3] // here all fine
		!name/!: "John", // mistake: property name without quotes
		"surname": !'Smith'/!, // mistake: single quotes in value (must be double)
		!'isAdmin'/!: false, // mistake: single quotes in key (must be double)
		"birthday": !new Date(2000, 2, 3)/!, // mistake: no "new" is allowed, only bare values
		"gender": "male"! /! // mistake: missing comma after non-last property
		"friends": [0,1,2,3]!,/! // mistake: there should not be a comma after the last property
		}`;
		```

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