Created
November 20, 2015 04:38
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family.js
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<!DOCTYPE html> | |
<html> | |
<head> | |
<style type="text/css"> | |
body { | |
margin: 0px; | |
} | |
</style> | |
</head> | |
<body> | |
<script> | |
// Parent | |
function Point() | |
{ | |
this.components = []; | |
} | |
Point.prototype.initWithComponents = function(components) | |
{ | |
this.components = []; | |
var component = null; | |
for (var i = 0; component = components[i]; i++) { | |
this.components.push(component); | |
} | |
return this; | |
}; | |
Point.prototype.stringValue = function() | |
{ | |
var stringValue = '('; | |
var component = null; | |
for (var i = 0; component = this.components[i]; i++) { | |
stringValue += (i == 0 ? '' : ', ') + component; | |
} | |
stringValue += ')'; | |
return stringValue; | |
}; | |
// Child | |
function Point3D() | |
{ | |
Point.call(this); | |
} | |
Point3D.prototype = Object.create(Point.prototype); | |
Point3D.prototype.constructor = Point3D; | |
// Initializers | |
Point3D.prototype.initWithXYZ = function(x, y, z) | |
{ | |
return this.initWithComponents([x, y, z]); | |
}; | |
// Getters | |
Point3D.prototype.getX = function(){ return this.components[0]; }; | |
Point3D.prototype.getY = function(){ return this.components[1]; }; | |
Point3D.prototype.getZ = function(){ return this.components[2]; }; | |
// Setters | |
Point3D.prototype.setX = function(x) { this.components[0] = x; }; | |
Point3D.prototype.setY = function(y) { this.components[1] = y; }; | |
Point3D.prototype.setZ = function(z) { this.components[2] = z; }; | |
Point3D.prototype.stringValue = function() | |
{ | |
return 'Point3D -> ' + Point.prototype.stringValue.call(this); | |
}; | |
window.onload = function() | |
{ | |
// var p = new Point().initWithComponents([1, 2, 3]); | |
var p = new Point3D().initWithXYZ(1, 2, 3); | |
console.log(p.stringValue()); | |
}; | |
</script> | |
</body> | |
</html> |
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