jQuery.parseJSON单引号vs双引号

Question

What actually the difference between this?

This works fine:

var obj1 = jQuery.parseJSON('{"orderedList": "true"}');
document.write("obj1 "+ obj1.orderedList );

but the following does not work:

var obj2 = jQuery.parseJSON("{'orderedList': 'true'}");
document.write("obj2 "+ obj2.orderedList );

Why is that?

Answer 1

That's because double quotes is considered standard while single quote is not. This is not really specific to JQuery, but its about JSON standard . So irrespective of JS toolkit, you should expect same behaviour.

A value can be a string in double quotes, or a number, or true or false or null, or an object or an array. These structures can be nested.

Update

Or perhaps its a duplicate of jQuery single quote in JSON response

Answer 2

As per the API documentation, double quotes are considered valid JSON, single quotes aren't.

http://api.jquery.com/jQuery.parseJSON/

Answer 3

Go to www.Jsonlint.com website and check your single quotes json string you will found that it is not a valid json string. Because double quotes json is standard json format.

jsonlint.com is a website to check json format right or not.

Answer 4

You could use replace to fix this. This worked for me.

var str = "{'orderedList': 'true'}";

str = str.replace(/\'/g, '\"');

JSON.parse(str);