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compare 2 json objects returns an array of all differences

/ Published in: JavaScript
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pass in 2 json objects returns an array of all differences included those nested in children.

_Q used internally to pass through to self, do not pass in _Q

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  1. var compare = function (obj1, obj2, _Q){
  2. 		_Q = (_Q == undefined)? new Array : _Q;
  3.  
  4. 		function size(obj) {
  5. 	        var size = 0;
  6. 	        for (var keyName in obj){
  7. 	        	if(keyName != null) size++;
  8. 	        }
  9. 	        return size;
  10. 	    };
  11.  
  12. 		if (size(obj1) != size(obj2)) {
  13. 			//console.log('JSON compare - size not equal > '+keyName)
  14. 		};
  15.  
  16. 		var newO2 = jQuery.extend(true, {}, obj2);
  17.  
  18. 	    for(var keyName in obj1){
  19. 	        var value1 = obj1[keyName],
  20. 	        	value2 = obj2[keyName];
  21.  
  22. 			delete newO2[keyName];
  23.  
  24. 			if (typeof value1 != typeof value2 && value2 == undefined) {
  25. 				_Q.push(['missing', keyName, value1, value2, obj1])
  26. 			}else if (typeof value1 != typeof value2) {
  27. 				_Q.push(['diffType', keyName, value1, value2, obj1])
  28. 			}else{
  29. 		        // For jQuery objects:
  30. 		        if (value1 && value1.length && (value1[0] !== undefined && value1[0].tagName)) {
  31. 					if (!value2 || value2.length != value1.length || !value2[0].tagName || value2[0].tagName != value1[0].tagName) {
  32. 						_Q.push(['diffJqueryObj', keyName, value1, value2, obj1])
  33. 					}
  34. 				}else if(value1 && value1.length && (value1.tagName !== value2.tagName)){
  35. 					_Q.push(['diffHtmlObj', keyName, value1, value2, obj1])
  36. 				}else if (typeof value1 == 'function' || typeof value2 == 'function') {
  37. 					_Q.push(['function', keyName, value1, value2, obj1])
  38. 				}else if(typeof value1 == 'object'){
  39. 					var equal = Arcadia.Utility.CompareJson(value1, value2, _Q);
  40. 				}else if (value1 != value2) {
  41. 					_Q.push(['diffValue', keyName, value1, value2, obj1])
  42. 				}
  43. 			};
  44. 	    }
  45.  
  46. 		for(var keyName in newO2){
  47. 			_Q.push(['new', keyName, obj1[keyName], newO2[keyName], newO2])
  48. 		}
  49.  
  50. 		/*
  51. 	    */
  52. 		return _Q;
  53. 	}; // END compare()

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