Javascript对象文字-可以添加重复的键吗? [英] Javascript object literal - possible to add duplicate keys?

问题描述

在javascript中，是否可以在对象文字中添加重复的键?如果是这样，那么在首次创建对象之后如何实现呢?

In javascript, is is possible to add duplicate keys in object literal? If it is, then how could one achieve it after the object has been first created.

例如:

exampleObject['key1'] = something;
exampleObject['key1'] = something else;

如何在不覆盖第一个key1的情况下添加第二个key1?

How can I add the second key1 without overwriting the first key1?

推荐答案

否，这是不可能的.它与:

No it is not possible. It is the same as:

exampleObject.key1 = something;
exampleObject.key1 = something else; // over writes the old value

我认为最好的方法是使用数组:

I think the best thing here would be to use an array:

var obj = {
  key1: []
};

obj.key1.push("something"); // useing the key directly
obj['key1'].push("something else"); // using the key reference

console.log(obj);

// ======= OR ===========

var objArr = [];

objArr.push({
  key1: 'something'
});
objArr.push({
  key1: 'something else'
});

console.log(objArr);

这篇关于Javascript对象文字-可以添加重复的键吗?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！