... instantiate.
Benefits of the Proxy Pattern
Each type of proxy has a different set of benefits. The remote proxy allows you to treat a remote
resource as a local JavaScript object. This is obviously ... in the middle of the range:
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Both of these types of proxies can be incredibly useful in the right circumstance...
... object-oriented design mentioned in the Gang of Four’s
Design Patterns says “Program to an interface, not an implementation,” telling you how funda-
mental this concept is.
The problem is that JavaScript ... useful.
In a large project, with many different programmers writing code, interfaces are essential.
Often programmers are asked to use an API that hasn’t been written yet, or are...
... setCSS(el, styles) {
for ( var prop in styles ) {
if (!styles.hasOwnProperty(prop)) continue;
setStyle(el, prop, styles[prop]);
}
}
CHAPTER 10 ■ THE FACADE PATTERN 145
90 8Xch10.qxd 11/15/07 10:57 ... apply to your composites. For example, it is
CHAPTER 9 ■ THE COMPOSITE PATTERN 1 39
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CompositeForm.prototype.remove = function(child) {
for(var i =...
... browsers implement the console
object:
/* SimpleProfiler class. */
var SimpleProfiler = function(component) {
this.component = component;
};
SimpleProfiler.prototype = {
buildList: function() {
var ... new SimpleProfiler(list); // Wrap the object in the decorator.
list.buildList(); // Creates the list and displays "buildList: 298 ms".
CHAPTER 12 ■ THE DECORATOR PATTERN174
90 8Xch12...
... INHERITANCE52
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// Later in your page, another programmer adds
var resetProduct = $('reset-product-button');
var findProduct = $('find-product-button'); ... new Author('Dustin Diaz', [&apos ;JavaScript Design Patterns& apos;]);
author[1] = new Author('Ross Harmes', [&apos ;JavaScript Design Patterns& apos...
... possible. It is one of the most useful patterns in JavaScript and has its place in
almost every project, no matter how large or small. In quick and simple projects, a singleton
can be used simply ... _$(arguments);
};
})();
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Design Patterns
PART 2
■ ■ ■
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displayResult: function(respo...
... bicycle;
};
/* GeneralProductsBicycleShop class. */
var GeneralProductsBicycleShop = function() {};
extend(GeneralProductsBicycleShop, BicycleShop);
GeneralProductsBicycleShop.prototype.createBicycle ... code produced will be more modular and more maintainable.
CHAPTER 9 ■ THE COMPOSITE PATTERN126
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extend(OfflineHandler, SimpleHandler);
OfflineHa...
... Protection Proxy
The virtual proxy is probably the most useful type of proxy to JavaScript programmers. Let’s
briefly go over the other types and explain why they aren’t as applicable to JavaScript.
A ... function(searchString) {
this._initializeLibrary();
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if(!this.initialized) {
return;
}
return this.directory....