json-parse-state
The json_parse_state.js implement a JSON parse method in JavaScript that uses a state machine.
In contrast [from the original work] from Douglas Crockford, it has a couple of modifications:
- It will not throw an exception if it found a valid JSON but it is not the end of the string.
- It accepts double-escaped strings as identifiers and values.
You can use this script to parse a JSON string that you do not know where it ends.
Example
Conventional
json_parse('{"foo": "bar"}').foo
Result: bar
Double escaped
json_parse('\{\\"tag\\":\\"\\u003cspan style=\'color:red;\'>\\u003c\\\\\\/span>\\"\}').tag
Result: <span style='color:red;'></span>
Ignore
json_parse('{\"foo\": \"bar\"} this will be ignored').foo
Result: bar