While JSON Lint may declare the JSON data as valid, JSON.parse may still encounter an error when trying

Question

While JSON Lint may declare the JSON data as valid, JSON.parse may still encounter an error when trying

I'm struggling to parse a simple JSON object. It's strange because when I check the validity of my JSON string on JSONLint (http://jsonlint.com/), it shows that it's valid.

var data = '{"token":"9eebcdc435686459c0e0faac854997f3","email":"201403050007950","id":"13","updated_at":"2014-03-05 10:34:51","messageguides":"[{\"name\":\"Un-named Messaging Guide 1\",\"pages\":[\"sustainabilitydirectors\",\"marketingnbusinessdevelopmentdirectors\"],\"date\":1394015692958}]"}';

var parsedData = JSON.parse(data); // However, I encounter an unexpected token n

console.log(parsedData);

javascript json

Answer 1

Answer №1

The backslash characters in the data are interpreted as JSON escape characters when processing the raw JSON.

However, if you include that JSON within a JavaScript string, they will be considered as JavaScript escape characters instead of JSON escape characters.

To address this, you should double escape them like \\ when representing your JSON as a JavaScript string.

Alternatively, it is often more effective to directly insert the JSON into JavaScript as an object (or array) literal rather than embedding it in a string and then parsing it separately.

var obj = {"token":"9eebcdc435686459c0e0faac854997f3","email":"201403050007950","id":"13","updated_at":"2014-03-05 10:34:51","messageguides":"[{\"name\":\"Un-named Messaging Guide 1\",\"pages\":[\"sustainabilitydirectors\",\"marketingnbusinessdevelopmentdirectors\"],\"date\":1394015692958}]"};

Answer 2

The backslash characters in the data are interpreted as JSON escape characters when processing the raw JSON.

However, if you include that JSON within a JavaScript string, they will be considered as JavaScript escape characters instead of JSON escape characters.

To address this, you should double escape them like \\ when representing your JSON as a JavaScript string.

Alternatively, it is often more effective to directly insert the JSON into JavaScript as an object (or array) literal rather than embedding it in a string and then parsing it separately.

var obj = {"token":"9eebcdc435686459c0e0faac854997f3","email":"201403050007950","id":"13","updated_at":"2014-03-05 10:34:51","messageguides":"[{\"name\":\"Un-named Messaging Guide 1\",\"pages\":[\"sustainabilitydirectors\",\"marketingnbusinessdevelopmentdirectors\"],\"date\":1394015692958}]"};

While JSON Lint may declare the JSON data as valid, JSON.parse may still encounter an error when trying

Answer №1

Similar questions

Encountering a problem when trying to map a List with a button in ReactJS

Learn how to seamlessly integrate React Hooks Form with the Select component from @Mui for a powerful

Utilizing react.js and passing props as parameters in recursive functions

Show a notification when utilizing AJAX requests

The fulfillment of the post route for the login page is awaiting a request in the browser using Express Node.js

Plot data points from geojson onto a leaflet map using markers

Tips for referencing Google Maps initialization in individual files within a website application

Preserving the video's aspect ratio by limiting the width and height to a maximum of 100%

What is causing the error when trying to parse a JSON with multiple properties?

Having trouble retrieving the attribute of an appended element in jQuery?

Managing the layout with React Native Flexbox to evenly distribute items

Setting the root position of a div: How can it be done?

Why won't my Laravel AJAX request work after refreshing the page?

Utilizing server-side cookies in next.js and nest.js for efficient data storage

Implementing jsGrid: Appending a row with JSON information

jScrollPane malfunctioning with Bootstrap 3's dropdown menu

Showing the contents of an array which contains arrays

How to automatically scroll to the bottom using jquery/css

Using AngularJS to interact with resources by passing in the scope parameter

Adjusting the size of MUI StaticDatePicker