how to correctly clone an object in WinJS - object

Question

I have this function for create objects in WinJS:
function BiometricSignatureData() {
this.averageSpeed = "";
this.pressure = new Array();
this.location = new Array();
this.timestamp = new Array();
this.speed = new Array();
this.evt = new Array();
this.spaces = 0;
this.attackPoints = 0;
this.finalPoints = 0;
this.signatureAddress = "";
this.restartObject =
function () {
this.pressure = new Array();
this.location = new Array();
this.timestamp = new Array();
this.averageSpeed = "";
this.speed = new Array();
this.evt = new Array();
this.spaces = 0;
this.attackPoints = 0;
this.finalPoints = 0;
this.signatureAddress = "";
}
this.printBiometricValuesOnRealTime =
function (pressure, location, averageSpeed, spaces, attackPoints, finishPoints) {
pressure.value = this.pressure[this.pressure.length -1];
location.value = "{" + this.location[this.location.length - 1] + "}";
averageSpeed.value = this.averageSpeed;
spaces.value = this.spaces;
attackPoints.value = this.attackPoints;
finishPoints.value = this.finalPoints;
}
}
Basicly creates BiometricSignatureData-type objects with 2 methods
restartObject
printBiometricValuesOnRealTime
and then I created two instances of the same object
var biometricObject = new BiometricSignatureData();
var biometricObjectBackup = new BiometricSignatureData();
my first instance (biometricObject) is filled with data, then I want to clone (not by reference) this instance in my second instance (biometricObjectBackup) by doing this:
function cloneObject(from, to) {// extends 'from' object with members from 'to'. If 'to' is null, a deep clone of 'from' is returned
if (from == null || typeof from != "object") return from;
if (from.constructor != Object && from.constructor != Array) return from;
if (from.constructor == Date || from.constructor == RegExp || from.constructor == Function ||
from.constructor == String || from.constructor == Number || from.constructor == Boolean)
return new from.constructor(from);
to = to || new from.constructor();
for (var name in from) {
to[name] = typeof to[name] == "undefined" ? cloneObject(from[name], null) : to[name];
}
return to;
}
filling second instance with first instance info
console.log("original Array: " + biometricObject.evt.length + ", backup Array: " + biometricObjectBackup.evt.length);
biometricObjectBackup = cloneObject(biometricObject);
console.log("original Array: " + biometricObject.evt.length + ", backup Array: " + biometricObjectBackup.evt.length);
biometricObject.restartObject();
console.log("original Array: " + biometricObject.evt.length + ", backup Array: " + biometricObjectBackup.evt.length);
put three console.log to follow the behavior of the objects getting next output:
original Array: 10, backup Array: 0
original Array: 10, backup Array: 10
original Array: 0, backup Array: 0
If I restart my original object, the second one (the cloned) cleans itself as well, how to do this right???
thanks for the support

Answer 1

you may try this:
var BiometricSignatureData = {
averageSpeed: "",
pressure: new Array(),
location: new Array(),
timestamp: new Array(),
speed: new Array(),
evt: new Array(),
spaces: 0,
attackPoints: 0,
finalPoints: 0,
signatureAddress: "",
restartObject :
function () {
this.pressure = new Array();
this.location = new Array();
this.timestamp = new Array();
this.averageSpeed = "";
this.speed = new Array();
this.evt = new Array();
this.spaces = 0;
this.attackPoints = 0;
this.finalPoints = 0;
this.signatureAddress = "";
},
printBiometricValuesOnRealTime:
function (pressure, location, averageSpeed, spaces, attackPoints, finishPoints) {
pressure.value = this.pressure[this.pressure.length - 1];
location.value = "{" + this.location[this.location.length - 1] + "}";
averageSpeed.value = this.averageSpeed;
spaces.value = this.spaces;
attackPoints.value = this.attackPoints;
finishPoints.value = this.finalPoints;
}
}
var BiometricSignatureDataBackup;
clone function is the same
and the last part:
BiometricSignatureDataBackup = cloneObject(BiometricSignatureData);
console.log("original Array: " + biometricObject.evt.length + ", backup Array: " + biometricObjectBackup.evt.length);
BiometricSignatureData.restartObject();
console.log("original Array: " + BiometricSignatureData.evt.length + ", backup Array: " + BiometricSignatureDataBackup.evt.length);