只是尝试从数组访问对象的字段，但我无法管理它

发布于 2024-12-16 14:00:15 字数 627 浏览 0 评论 0原文

抱歉这个基本问题，但我就是无法让这个最微不足道的事情发挥作用。有没有人有我在 jsfiddle 中重新创建了它，它在那里工作，但在我的环境中不起作用。这是我的代码的精确副本。在我的环境中它总是返回未定义。 http://jsfiddle.net/JNsaC/

function Card (first , last , mid) {
    this.first = first ;
    this.last = last ;
    this.mid = mid ;

}

var testArray = [ new Card("A", "B", "C"), new Card("D", "E", "E") ]

alert(testArray[1].mid);

谢谢，戴尔

这就是答案。感谢您的帮助我无法访问我的字段直接对象或使用 getter 函数

原文

Sorry for the elementary question, but I just cannot get this most trivial thing working. Does anyone have
I recreated this in jsfiddle and it works there, but not in my environment. This is an exactly copy from my code. In my environment it always returns undefined. http://jsfiddle.net/JNsaC/

function Card (first , last , mid) {
    this.first = first ;
    this.last = last ;
    this.mid = mid ;

}

var testArray = [ new Card("A", "B", "C"), new Card("D", "E", "E") ]

alert(testArray[1].mid);

Thanks,
Dale

Here's the answer. Thanks for the help
I cannot access fields in my object directly or with a getter function

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寄风 2024-12-23 14:00:15

当我运行你的 jsfiddle 时，我得到了未定义。其中的代码是：

function Card (first , last , mid) {
    this.first = first ;
    this.last = last ;
    this.mid = mid ;

}

var testArray = [ new Card("A", "B", "C"), new Card("D", "E", "E") ]

alert(testArray[1].cost);

这与您在此处发布的代码不同。将 alert(testArray[1].cost); 替换为 alert(testArray[1].mid); 对我有用。也许这只是一个错字？

When I run your jsfiddle, I get undefined. The code in it is :

function Card (first , last , mid) {
    this.first = first ;
    this.last = last ;
    this.mid = mid ;

}

var testArray = [ new Card("A", "B", "C"), new Card("D", "E", "E") ]

alert(testArray[1].cost);

which is different than what you posted here. Replacing alert(testArray[1].cost); by alert(testArray[1].mid); works for me. Maybe it's just a typo?

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