相关疑难解决方法(0)

所以我有这两个例子,来自javascript.info:

例1:

var animal = {
  eat: function() {
    alert( "I'm full" )
    this.full = true
  }
}

var rabbit = {
  jump: function() { /* something */ }
}

rabbit.__proto__ = animal 

rabbit.eat() 

例2:

function Hamster() {  }
Hamster.prototype = {
  food: [],
  found: function(something) {
    this.food.push(something)
  }
}

// Create two speedy and lazy hamsters, then feed the first one
speedy = new Hamster()
lazy = new Hamster()

speedy.found("apple")
speedy.found("orange")

alert(speedy.food.length) // 2
alert(lazy.food.length) // 2 (!??)

从示例2开始:当代码到达时 …

我在javascript中创建了这段代码:

function Shape() {}
Shape.prototype.name = "Shape";
Shape.prototype.toString = function() {
    result = [];
    if(this.constructor.uber) {
        result[result.length] = this.constructor.uber.toString();
    }
    result[result.length] = this.name;
    return result.join(', ');
}


function twoDShape() {};
twoDShape.prototype = new Shape();
twoDShape.prototype.constructor = twoDShape;

twoDShape.uber = twoDShape.prototype;
twoDShape.name = "twoD Shape";

var a = new twoDShape();
console.log(a.toString());

我不知道为什么但是当我运行它时,firefox就冻结了.我一直在努力解决这个问题.我的猜测是我的代码中应该有一个无限循环,并且它存在于if条件的某个地方,但我没有找到它.有人可以帮我解决这个问题.谢谢!