Parsing string as JSON with single quotes?

Question

I have a string

str = \"{\'a\':1}\";
JSON.parse(str);
VM514:1 Uncaught SyntaxError: Unexpected token \'(…)

How can I parse the above stri

Answer 1

If you are sure your JSON is safely under your control (not user input) then you can simply evaluate the JSON. Eval accepts all quote types as well as unquoted property names.

var str = "{'a':1}";
var myObject = (0, eval)('(' + str + ')');

The extra parentheses are required due to how the eval parser works. Eval is not evil when it is used on data you have control over. For more on the difference between JSON.parse and eval() see JSON.parse vs. eval()