比較obj差異

difference.js

function findDifferences(objectA, objectB) {
       var propertyChanges = [];
       var objectGraphPath = ["this"];
       (function(a, b) {
          if(a.constructor == Array) {
             // BIG assumptions here: That both arrays are same length, that
             // the members of those arrays are _essentially_ the same, and 
             // that those array members are in the same order...
             for(var i = 0; i < a.length; i++) {
                objectGraphPath.push("[" + i.toString() + "]");
                arguments.callee(a[i], b[i]);
                objectGraphPath.pop();
             }
          } else if(a.constructor == Object || (a.constructor != Number && 
                    a.constructor != String && a.constructor != Date && 
                    a.constructor != RegExp && a.constructor != Function &&
                    a.constructor != Boolean)) {
             // we can safely assume that the objects have the 
             // same property lists, else why compare them?
             for(var property in a) {
                objectGraphPath.push(("." + property));
                if(a[property].constructor != Function) {
                   arguments.callee(a[property], b[property]);
                }
                objectGraphPath.pop();
             }
          } else if(a.constructor != Function) { // filter out functions
             if(a != b) {
                propertyChanges.push({ "Property": objectGraphPath.join(""), "ObjectA": a, "ObjectB": b });
             }
          }
       })(objectA, objectB);
       return propertyChanges;
    }