JSON vs. JavaScript vs. PageWatch vs. Velocity.js Comparison Chart

JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write. It is easy for machines to parse and generate. It is based on a subset of the JavaScript Programming Language Standard ECMA-262 3rd Edition - December 1999. JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language. JSON is built on two structures: 1. A collection of name/value pairs. In various languages, this is realized as an object, record, struct, dictionary, hash table, keyed list, or associative array. 2. An ordered list of values. In most languages, this is realized as an array, vector, list, or sequence. These are universal data structures. Virtually all modern programming languages support them in one form or another.

Track updates of your entire site. Catch website issues before your users do. Find visual bugs on every page. Studies show up to 85% of visitors are more likely to leave after seeing errors on your site. See how new changes affect the rest of your site and catch any unexpected side effects before it becomes a problem. PageWatch analyzes your website using Lighthouse to identify slow pages that might hurt your conversions. PageWatch is a zero config tool for front-end testing. It allows you to test any site for performance issues, broken layouts, spelling mistakes, broken links and more. You can run PageWatch as part of your continuous integration process. On every pull request or deploy you'll be able to test your site and catch any issues before it becomes an issue. Our Netlify build plugin can run PageWatch audits automatically from pull request previews or production builds.