function Class() {}
// Helper function to correctly set up the prototype chain for subclasses.
// Similar to `goog.inherits`, but uses a hash of prototype properties and
// class properties to be extended.
Class.extend = function(protoProps, staticProps) {
var parent = this, child, prop;
// The constructor function for the new subclass is either defined by you
// (the "constructor" property in your `extend` definition), or defaulted
// by us to simply call the parent constructor.
if (protoProps && protoProps.hasOwnProperty('constructor')) {
child = protoProps.constructor;
} else {
child = function() { return parent.apply(this, arguments); };
}
// Add static properties to the constructor function, if supplied.
for (prop in parent) child[prop] = parent[prop];
for (prop in staticProps) child[prop] = staticProps[prop];
// Set the prototype chain to inherit from `parent`, without calling
// `parent` constructor function.
var Surrogate = function() { this.constructor = child; };
Surrogate.prototype = parent.prototype;
child.prototype = new Surrogate;
// Add prototype properties (instance properties) to the subclass,
// if supplied.
for (prop in protoProps) child.prototype[prop] = protoProps[prop];
// Save parent prototype
child.prototype.__super__ = parent.prototype;
return child;
};
var Model = Class.extend({
constructor: function() {
console.log("Model:constructor()");
}
});
var User = Model.extend({
constructor: function() {
this.__super__.constructor();
console.log("User:constructor()");
}
});
var SuperUser = User.extend({
constructor: function() {
this.__super__.constructor();
console.log("SuperUser:constructor()");
}
});
var supeUser = new SuperUser();function calc(x, y, operation) {
var operations = {
plus: function(x, y) { return x + y },
minus: function(x, y) { return x - y },
multiply: function(x, y) { return x * y },
divided: function(x, y) { return x / y },
}
return operations[operation] && operations[operation](x, y);
}
calc(10, 20, "plus"); // 30public function setDescription($description) {
$this->description = $description;
}public function setMetaData($name, $content, $http_equiv = false, $sync = true) {
$name = strtolower($name);
if ($name == 'generator') {
$this->setGenerator($content);
} elseif ($name == 'description') {
$this->setDescription($content);
} else {
if ($http_equiv == true) {
$this->_metaTags['http-equiv'][$name] = $content;
// Syncing with HTTP-header
if($sync && strtolower($name) == 'content-type') {
$this->setMimeEncoding($content, false);
}
} else {
$this->_metaTags['standard'][$name] = $content;
}
}
}function cloneArray(array){
var result = [];
for (var i in array) {
if (array[i] === undefined) continue;
result[i] = array[i].length ? cloneArray(array[i]) : array[i];
}
return result;
}
var data = [[10,10], [0,30], [20,30], [10,10]];
var array1 = cloneArray(data);
var array2 = cloneArray(data);