JavaScript 打印整个数组而不是单个元素

Question

var input = document.querySelector("input");
var button = document.querySelector("button");
var inventory = ["jacket","pants","map"];
var actionsIKnow = ["north","east","west","south"];
var messages = ["A group of dangerous minions. Turn back, you do not have a sword",
  "You have gone too deep into the forest. Want to go further?",
  "A giant ruby crystal",
  "A silent lake; you see your reflection in the water",
  "Clear patch of land",
  "A sleeping dragon. Bettwe not wake it up",
  "A solitary cottage. Faint music can be heard from the inside",
  "Looks like this path leads to the cottage of the flute maker",
  "A lot of tombstones, looks like an old graveyard"
];

var userInput;
var startingPos = 4;

button.addEventListener("click",takeMeThere,false);

function takeMeThere(){
  userInput = input.value;
  userInput = userInput.toLowerCase();
  if(userInput!=null){
    validateInput();
  }
}
function validateInput(){
  for(var i=0;i<actionsIKnow.length;i++){
    if(userInput.indexOf(actionsIKnow[i]!=-1)){
      move(actionsIKnow[i]);
    }
  }
}
function move(where){
  console.log(where);
}

我正在制作一个基于文本的探索游戏，用户可以在其中选择去哪里。用户想去哪里取决于在文本字段中输入的内容。然后将此数据传递到 move(where)，我在其中 console.log(where)。它不打印 north、east 等，而是打印整个 actionsIKnow 数组。为什么？

Answer 1

简单的错误。变化

if(userInput.indexOf(actionsIKnow[i]!=-1)){

为此:

if (userInput.indexOf(actionsIKnow[i]) !== -1 ) {

http://jsfiddle.net/bz8k5/

编辑。根据评论中的讨论。 为了能够验证不同格式的输入，例如 east，move east，但不允许 easter，您可能还需要使用更复杂的验证规则。也许使用正则表达式:

if (userInput.match(new RegExp("\\b" + actionsIKnow[i] + "\\b"))) {
    move(actionsIKnow[i]);
}

http://jsfiddle.net/bz8k5/2/