Is there any practical reason to use quoted strings for JSON keys?

Is there any practical reason to use quoted strings for JSON keys?

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PHP JSON String, escape Double Quotes for JS output

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json parse error with double quotes

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How to let jackson generate json string using single quote or no quotes?

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Json.NET: Deserilization with Double Quotes

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Remove double quote in json_encode()

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Python how convert single quotes to double quotes to format as json string

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Is there any difference in JSON Key when using single quote and double quote?

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Export JSON value in table from Bigquery with correct quotes

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ASMX web method receiving unescaped double quote in parameter, JSON

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GWT - JSNI - passing json object

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Dynamically double-quote "keys" in text to form valid JSON string in python

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c# handle single double quote in the string(json)

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how to pass text by adding double quotes before and after in android

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How to enter the doubles quotes in string

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