从javascript数组中选择一个随机项目 [英] pick a random item from a javascript array

问题描述

我正在制作一个可以响应我的消息的机器人.

如果我向机器人发送 Hi！，它将通过 Well，hello！回答.我只是想知道，如何为机器人提供多种选择答案?是否可以使用JavaScript从响应数组中选择随机项目?

If i send Hi! to the bot, it will answer With Well, hello there!. I was just wondering, what do I do to give the bot multiple choices of answers? Is there a way to pick a random item from a responses array using JavaScript?

推荐答案

使用Math.random *数组的长度(四舍五入)作为数组的索引.

Use Math.random * the length of the array, rounded down, as an index into the array.

赞:

var answers = [
  "Hey",
  "Howdy",
  "Hello There",
  "Wotcha",
  "Alright gov'nor"
]

var randomAnswer = answers[Math.floor(Math.random() * answers.length)];

console.log(randomAnswer);

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