JavaScript Objects vs. JSON Strings: What\'s the Difference?

Understanding the Differences between JavaScript Objects and JSON Strings

Question 1: Key/Property Name Validity

In JavaScript Object Literal notation, key/property names can be enclosed in either quotes or not. Quotes are necessary when the key is a reserved word or contains special characters. In JSON, however, key names must always be enclosed in double quotes.

Question 2: Conversion to JSON

When converting a JavaScript object to JSON using JSON.stringify(), the resulting JSON string retains the structure and values of the original object. However, it is not the same as the object itself. JSON is a data interchange format, while JavaScript objects are a native type in JavaScript. This distinction is important for data exchange and cross-language communication.

Question 3: Parsing JSON Strings

Yes, the recommended method for parsing JSON strings is var javascriptObj = JSON.parse(jsonString);. JSON.parse() is a native JavaScript function that safely converts a valid JSON string into a JavaScript object. For older browsers that do not support JSON natively, you can include json2.js or use jQuery's $.parseJSON() method.

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