JSON.parse() throws “unexpected token” error for valid JSON

Although your JSON string is valid JSON.parse is likely to throw error. This is because JSON.parse cannot parse some special characters that are \n, \t, \r and \f.

You need to escape these special characters for before passing JSON string to JSON.parse function.

Here is a function that takes a JSON string and escapes the special characters:

function escapeSpecialChars(jsonString) {

return jsonString.replace(/\n/g, "\\n")
.replace(/\r/g, "\\r")
.replace(/\t/g, "\\t")
.replace(/\f/g, "\\f");

}