如何从JavaScript对象获取随机键值 [英] How to get a random key value from a JavaScript object

问题描述

我有一个西班牙语单词/短语及其英语含义的Javascript哈希:

I have a Javascript hash of Spanish words/phrases and their English meanings:

  let phrases = {
    hola: "hello",
    adios: "bye",
  };

我想选择一个随机密钥.我已经尝试了一段时间，但最近的尝试没有成功，并返回了undefined:

I want to select a random key. I have tried for a while, and my latest attempt hasn't worked and returns undefined:

  var keys = phrases.keys;
  var len = phrases.length;
  var rnd = Math.floor(Math.random()*len);
  var key = phrases[rnd];

我已经查看了其他Stack Overflow答案，但似乎找不到确切的答案.有什么想法吗?

I've looked at other Stack Overflow answers but can't seem to find exactly what I'm looking for. Any ideas please?

推荐答案

可能您可以使用 Object.keys() 代替.

Probably you can use Object.keys() instead.

请尝试以下操作:

const phrases = {
  hola: "hello",
  adios: "bye",
};

const keys = Object.keys(phrases);
const len = keys.length;
const rnd = Math.floor(Math.random() * len);
const key = phrases[keys[rnd]];

console.log(key);

我希望这会有所帮助！

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