如何使用jQuery动态调用JavaScript对象上的属性 [英] How to dynamic call property on javascript object with jQuery

问题描述

大家好！ 我说了一个带有一些属性的javascript对象

Hallo all. I got a javascript object with some propeties let's say

function Animal() {
this.id;
this.name;

我需要以动态方式调用id函数来获取并设置其值:类似这样的

I need to call id function in a dynamic way to get and set its value: something like this

Animal animal = new Animal();
var propertyName = "id";
animal.+propertyName = "name";

有一种优雅的方法吗?使用jQuery吗?

Is there an elegant way to do it? With jQuery?

亲切的问候

马西莫(Massimo)

Massimo

推荐答案

除对象语法外，在JavaScript中，您还可以使用类似数组的语法来查询对象属性.因此，在您的情况下:

Apart from object syntax, in JavaScript you can also use an array-like syntax to query object properties. So in your case:

function Animal() { this.id; this.name };
Animal animal = new Animal();
animal.id = "testId";

var propertyName = "id";
alert(animal[propertyName]); // this should alert the value "testId";

这是一篇包含更多详细信息的文章: http://www.quirksmode.org/js/associative .html

Here's an article with more details: http://www.quirksmode.org/js/associative.html

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