If you don't care about the standard, you can use / * * / to comment out stuff in JSON. It's a shame this wasn't in the spec. Along with making quotes optional

If you don't care about the standard, you can use / * * / to comment out stuff in JSON. It's a shame this wasn't in the spec. Along with making quotes optional for keys. It's a real shame that the native JSON object, and the spec missed out these useful features... var obj = eval("({foo:3 /*,bar:7*/ })"); Works fine, but JSON.parse and probably most other JSON libs throw a hissy fit for no good reason. I love JSON, but making quotes compulsory for keys, and missing out comments are both a PITA.