使用Douglas Crockford的函数继承在Javascript中调用基本方法
问题描述：
基本上如何使用下面的模式调用基本方法？
Basically how do I call a base method using this patter below?
var GS = {};
GS.baseClass = function (somedata) {
var that = {};
that.data = somedata;
//Base class method
that.someMethod = function(somedata) {
alert(somedata);
};
return that;
};
GS.derivedClass = function(somedata) {
var that = GS.baseClass(somedata);
//Overwriting base method
that.someMethod = function(somedata) {
//How do I call base method from here?
//do something else
};
return that;
};
谢谢。
答
var GS = {};
GS.baseClass = function (somedata) {
var that = {};
that.data = somedata;
//Base class method
that.someMethod = function(somedata) {
alert(somedata);
};
return that;
};
GS.derivedClass = function(somedata) {
var that = GS.baseClass(somedata);
//Overwriting base method
var basemethod = that.someMethod;
that.someMethod = function(somedata) {
//How do I call base method from here?
basemethod.apply(that, [somedata]);
//do something else
};
return that;
};
干杯。