Question

var eg = "one"
var eg2 = "two"
var eg3 = "three"

function randomchoose() {
    var rand = ["eg", "eg2", "eg3"];
    var act = [eg, eg2, eg3];
    choose = rand[Math.floor(Math.random()*rand.length)]
    chosen = act[choose]
    return [chosen, choose];
}

我的问题是，我不知道如何选择＆＃34;选择＆＃34;是随机选择的变量。

基本上，如果它滚动，例如，我想选择＆＃34;一个＆＃34;其他人也一样

------ ------ EDIT 我忘了指定，我需要它将变量名称返回为＆＃34;选择＆＃34;和实际值＆＃34;选择＆＃34;

Answer 1

据我所知，您希望返回随机选择的字段名称和字段值。这是一个片段：

＆＃13;

var eg = "one"
var eg2 = "two"
var eg3 = "three"

function choseRandom() {
  var rand = ["eg", "eg2", "eg3"];
  var act = [eg, eg2, eg3];
  var chosenIndex = Math.floor(Math.random()*rand.length);
  var fieldName = rand[chosenIndex]
  var fieldValue = act[chosenIndex]
  return [fieldName, fieldValue];
}

console.log(choseRandom());
console.log(choseRandom());
console.log(choseRandom());

＆＃13;

Answer 2

使用对象而不是多个变量来存储值

var data = {
  eg: "one",
  eg2: "two",
  eg3: "three"
}

function randomchoose() {
  var rand = ["eg", "eg2", "eg3"];

  choose = rand[Math.floor(Math.random() * rand.length)]
  chosen = data[choose]
  return [chosen, choose];
}

console.log(randomchoose())

Answer 3

您只需存储您获得的随机数，并在需要时传递数组。这是片段

根据您的问题更新

var eg = "one"
var eg2 = "two"
var eg3 = "three"

function randomchoose() {
    var rand = ["eg", "eg2", "eg3"];
    var act = [eg, eg2, eg3];
    randomNumber = Math.floor(Math.random()*rand.length)
    chosen = act[randomNumber]
    choose = rand[randomNumber]
    return [chosen, choose];
}
console.log(randomchoose())

Answer 4

selected = act [rand.indexOf（choose）]

Javascript数组随机选择问题

4 个答案: