![]() Consider this simple example: old: ? The "mum" has changed, and the list of "kids" has changed, but has "Mike" changed to "Mary", or are both "Mike" and "Louisa" gone with "Mary" being new, or.? Maybe it should be "kids": because that's the new value. This can be done recursively, and simply return true or false, but a getDifferences(a,b) function is going to get confusing in how it reports the differences within nested objects. If we assume you've already got (parsed) objects, an isEqual(a,b) function really should cope with nested objects, properties that are arrays, etc. Naturally this assumes that your server-side code is creating the JSON strings in a consistent format (and not, e.g., changing the order of the properties). If they are different (or if it is the first request) parse the JSON and process it for display as appropriate. Then when the next response comes in compare the new string with the old string. If you would be happy with a really simple "Has it changed in any way? Yes/No" solution, where if it has changed you just replace the previous object with the new one (as per the part of your question that I quoted), then you could save the JSON response before you parse it, i.e., save it in the string format in which your web-server sends it. Where if there is any changes from one to the other apply them to the stored object or replace it (either way) JS Graphics JS Graphics JS Canvas JS Plotly JS Chart.js JS Google Chart JS D3.What I want to do is take the object that was just polled and compare it to a stored one. JS vs jQuery jQuery Selectors jQuery HTML jQuery CSS jQuery DOM JS JSON JSON Intro JSON Syntax JSON vs XML JSON Data Types JSON Parse JSON Stringify JSON Objects JSON Arrays JSON Server JSON PHP JSON HTML JSON JSONP ![]() JS AJAX AJAX Intro AJAX XMLHttp AJAX Request AJAX Response AJAX XML File AJAX PHP AJAX ASP AJAX Database AJAX Applications AJAX Examples JS Web APIs Web API Intro Web Forms API Web History API Web Storage API Web Worker API Web Fetch API Web Geolocation API JS Browser BOM JS Window JS Screen JS Location JS History JS Navigator JS Popup Alert JS Timing JS Cookies JS HTML DOM DOM Intro DOM Methods DOM Document DOM Elements DOM HTML DOM Forms DOM CSS DOM Animations DOM Events DOM Event Listener DOM Navigation DOM Nodes DOM Collections DOM Node Lists JS Async JS Callbacks JS Asynchronous JS Promises JS Async/Await ![]() JS Classes Class Intro Class Inheritance Class Static JS Functions Function Definitions Function Parameters Function Invocation Function Call Function Apply Function Bind Function Closures JS Objects Object Definitions Object Properties Object Methods Object Display Object Accessors Object Constructors Object Prototypes Object Iterables Object Sets Object Maps Object Reference ![]() JS Tutorial JS HOME JS Introduction JS Where To JS Output JS Statements JS Syntax JS Comments JS Variables JS Let JS Const JS Operators JS Arithmetic JS Assignment JS Data Types JS Functions JS Objects JS Events JS Strings JS String Methods JS String Search JS String Templates JS Numbers JS BigInt JS Number Methods JS Number Properties JS Arrays JS Array Methods JS Array Sort JS Array Iteration JS Array Const JS Dates JS Date Formats JS Date Get Methods JS Date Set Methods JS Math JS Random JS Booleans JS Comparisons JS If Else JS Switch JS Loop For JS Loop For In JS Loop For Of JS Loop While JS Break JS Iterables JS Sets JS Maps JS Typeof JS Type Conversion JS Bitwise JS RegExp JS Precedence JS Errors JS Scope JS Hoisting JS Strict Mode JS this Keyword JS Arrow Function JS Classes JS Modules JS JSON JS Debugging JS Style Guide JS Best Practices JS Mistakes JS Performance JS Reserved Words ![]()
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