Finish the code for a three dimensional vector object called Vector3 with x, y, and z properties and an addSelf method that takes one argument, another vector object, and adds it component-wise to the vector object that owns the method.

javascript programming
exercise: methods 05

function Vector3(x,y,z) {
}

var Vector3Proto = {
  addSelf : function() {}
};

Vector3.prototype = Vector3Proto;

var vectorA = new Vector3(1.0, 2.0, 3.0);
var vectorB = new Vector3(5.0, 7.0, 11.0);

vectorA.addSelf( vectorB );

// Code test

document.write("Test Result<br>");
document.write("vectorA property x is: "+vectorA.x+" should be: "+6.0+" result: ");
if (vectorA.x === 6.0)
  document.write("pass<br>");
else
  document.write("FAIL<br>");
document.write("vectorA property y is: "+vectorA.y+" should be: "+9.0+" result: ");
if (vectorA.y === 9.0)
  document.write("pass<br>");
else
  document.write("FAIL<br>");
document.write("vectorA property z is: "+vectorA.z+" should be: "+14.0+" result: ");
if (vectorA.z === 14.0)
  document.write("pass<br>");
else
  document.write("FAIL<br>");

function deepObjectToString(obj) {
  return JSON.stringify(obj);
}

function cloneTree(obj) {
  return JSON.parse(JSON.stringify(obj));
}

function str(obj) {
  return JSON.stringify(obj);
}

function equals(x1,x2) {
  return JSON.stringify(x1) == JSON.stringify(x2);
}

/*
  
function deepObjectToString(obj) {
  var string = "{";
  var firstTime = true;
  for (var x in obj) {
    if (x=="toString")
      continue;
    if (!firstTime)
      string += ", ";
    string += x;
    string += " : ";
    string += str(obj[x]);
    firstTime = false;
  }
  string += '}';
  return string;
}

function str(obj) {
  if (obj === null)
    return "null";
  if (typeof obj === "object")
    return deepObjectToString(obj);
  return String(obj);
}

// Deep, but limited object comparison
// Membership cycles cause infinite looping
function equals(x1,x2) {
  var t1 = typeof x1;
  var t2 = typeof x2;
  if (t1 !== t2)
    return false;
  if (t1 !== "object")
    return x1 === x2;
  var p;
  for (p in x1) {
    if ( !equals(x1[p],x2[p]) )
      return false;
  }
  for (p in x2) {
  if ( !equals(x1[p],x2[p]) )
      return false;
  }
  return true;
}
*/

var testAA = [
  [headA,newEventA,headA2],
  [headB,newEventB,headB2],
  [headC,newEventC,headC2]
];

var argAAS = [];
for (var i=0;i<testAA.length;i++) {
  argAAS.push( [] );
  for (var j=0;j<testAA[i].length-1;j++) {
    argAAS[i].push( str(testAA[i][j]) );
  }
}

var testFunction = Vector3.addSelf;

function runTests(func,testAA) {
  var answerA = [];
  for (var i=0;i<testAA.length;++i)
    answerA.push( func.apply(null,testAA[i]) );
  return answerA;
}

run();
</script>
<style>
table { border-spacing: 15px 5px; }
th { text-align:center; }
td { text-align:center; }
</style>
</html>

javascript programmingexercise: methods 05

javascript programming
exercise: methods 05