How to JSONify a javascript object's properties

Question

I'm doing a 'manual' run through my javascript class' properties in order to form JSON, as seen below. It feels clumsy and I would to learn how to do this automatically, so I wouldn't have to mess with the 'toJson' function if I add or remove any properties, for example.

Can a helpful mind point me in the right direction on how to adapt the below 'toJson' function towards this purpose?

Many thanks in advance.

/* Using Simple JavaScript Inheritance * By John Resig http://ejohn.org/ * MIT Licensed.*/ var LogEntry = Class.extend({     init: function (_conferenceId, _tokenId, _logType, _logValue) {         this.dato = new Date();         this.logValue = _logValue;         this.logType = _logType;         this.conferenceId = _conferenceId;         this.tokenId = _tokenId;     },     toJson: function () {         // ?         var jsonStringBuilder = '{ ';         jsonStringBuilder += '"dato": ' + this.dato.toString() + ',';         jsonStringBuilder += '"conferenceId": ' + this.conferenceId + ',';         if (this.tokenId== null) {             jsonStringBuilder += '"tokenId":null,';         }         else {             jsonStringBuilder += '"tokenId": ' + _tokenId + ',';         }         jsonStringBuilder += '"logValue": ' + this.logValue + ',';         jsonStringBuilder += '"logType": ' + this.logType;         jsonStringBuilder += '}';          return jsonStringBuilder;         } }); 

Answer 1

JSON.stringify is the function you're looking for.

Some very old browsers do not natively provide the JSON object, but you can use a shim library for those browsers.

Answer 2

I think you're looking for JSON.stringify().