javascript

CHAPTER 6 ■ FUNCTIONS AND ARRAYS
var Proxy = function () {},
child;
Proxy.prototype = parent;
child = new Proxy();
if (descriptors !== undefined) {
Object.defineProperties(child, descriptors);
}
return child;
};
}
Function.prototype.bind = Function.prototype.bind ||
function (obj) {
var that = this,
ossify = [].slice.call(arguments, 1),
fn = function () {
return that.apply(this instanceof that ? this : obj,
ossify.concat([].slice.call(arguments, 0)));
};
fn.prototype = Object.create(that.prototype);
return fn;
};
Now for the moment of truth. Let’s try currying a constructor that churns Wild Maine Blueberry ice
cream with its blueberries and lemon parameters. Insofar as we’re presetting those parameters to their
typical winter values—no fresh wild blueberries to be had now—we’ll name the new constructor
WinterWildMaineBlueberry. Then since WinterWildMaineBlueberry just takes a vanilla parameter—the
blueberries and lemon parameters are preset—we’ll just pass "Tahitian" to choose a mild vanilla bean,
verifying our work with Figure 6–11:
if (Object.defineProperties === undefined) {
Object.defineProperties = function (obj, descriptors) {
for (descriptor in descriptors) {
if (descriptors.hasOwnProperty(descriptor)) {
obj[descriptor] = descriptors[descriptor].value;
}
}
};
}
if (Object.create === undefined) {
Object.create = function (parent, descriptors) {
var Proxy = function () {},
child;
Proxy.prototype = parent;
child = new Proxy();
if (descriptors !== undefined) {
Object.defineProperties(child, descriptors);
}
return child;
};
}
Function.prototype.bind = Function.prototype.bind ||
function (obj) {
var that = this,
ossify = [].slice.call(arguments, 1),
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