How to check if all " characters in a string are escaped

Question

I haven't found anything online that could help me or maybe it is my knowledge in Regex expressions that hinder.

I would like to check if all " characters in a string are escaped. Take this string for example.

\"\"This is the first sentence\"
\"This is the second sentence\"
\"This is the third sentence\"\"

Answer 1

Add a leading [" and trailing "] to the string, then attempt to parse it as JSON. If everything is properly escaped there will be no parse errors. You can use an online parser such as the one at http://json.parser.online.fr/ , if you want check a string from source, without running code.