Does jQuery Handle JSON Syntax Differently for Single and Double Quotes?

jQuery's Handling of JSON Syntax: Single vs Double Quotes

In JavaScript, JSON (JavaScript Object Notation) is typically enclosed in double quotes for key-value pairs. However, jQuery's jQuery.parseJSON() function allows for single quotes as well.

Consider the following examples:

var obj1 = jQuery.parseJSON('{"orderedList": "true"}');
console.log("obj1 ", obj1.orderedList); // "true"

var obj2 = jQuery.parseJSON("{'orderedList': 'true'}");
console.log("obj2 ", obj2.orderedList); // Error

As you can see, obj1 works fine, while obj2 results in an error. This is because JSON standards dictate that double quotes should be used for key-value pairs. Single quotes are not recognized as valid JSON syntax.

This is not unique to jQuery; it applies to any JSON parser in JavaScript, such as the native JSON.parse() method.

Therefore, when working with JSON data, it's recommended to use double quotes consistently. This ensures interoperability and avoids potential errors. Double quotes are the industry standard for JSON, and deviations from it can lead to unexpected behavior.

The above is the detailed content of Does jQuery Handle JSON Syntax Differently for Single and Double Quotes?. For more information, please follow other related articles on the PHP Chinese website!