如何获取一个构造函数从Javascript中的构造函数继承？ [英] How to get a constructor function to inherit from a constructor function in Javascript?

问题描述

所以我正在学习Javascript及其所有的原型善良，我对以下情况感到厌烦：

So I'm learning Javascript and all its' prototype goodness, and I am stumped over the following:

说我有这个

var Animal = function (a, b, c, d, e, f, g, h, i, j, k , l, m, n){
   this.a = a;
   this.b = b;
   //...etc...
};

var x = new Animal(1,2,3....);

现在我如何创建一个Cat构造函数，它继承自Animal构造函数，不得不再次键入超长参数？

Now how do I create a Cat constructor function that inherits from the Animal constructor function such that I don't have to type the super long arguments again?

换句话说，我不想这样做：

In other words I don't want to be doing this:

var Cat = function (a, b, c, d, e, f, g, h, i, j, k , l, m, n){
   this.a = a;
   this.b = b;
   //...etc...
};

// inherit functions if any
Cat.prototype = new Animal;

var y = new Cat(1,2,3....);

提前感谢！
j

Thanks in advance! j

推荐答案

如何？

var Cat = Function (a, b, c, d, e, f, g, h, i, j, k , l, m, n){
   Animal.apply(this, arguments);
};

// inherit functions if any
Cat.prototype = new Animal;

var y = new Cat(1,2,3....);

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