javascript - JS - 比较两个数组中的两个值似乎不起作用

Question

任何人都可以帮我解决这个代码：

    
var questions =[
  ['how many states?', 1],
  ['how many continents?', 2],
  ['how many legs?', 3]
]

var answers = [];
var rightAnswers = [];
var wrongAnswers = [];


for(i = 0; i<questions.length; i+=1){  
  answers.push(prompt(questions[i][0]).toLowerCase());
  
  if(questions[i][1] === answers[i]){
     // rightAnswers.push(questions[i][0]) 
     console.log("success!");
  }else{
     console.log("bummer");
  }
  
}

比较两个数组的两个插槽似乎不起作用:(谢谢！

标签： javascriptarrays

Answer 1

该prompt方法返回字符串，而您的答案是数字。===只需通过将严格替换为 来让松散比较完成工作==。

    
var questions =[
  ['how many states?', 1],
  ['how many continents?', 2],
  ['how many legs?', 3]
]

var answers = [];
var rightAnswers = [];
var wrongAnswers = [];


for(i = 0; i<questions.length; i+=1){  
  answers.push(prompt(questions[i][0]).toLowerCase());
  
  if(questions[i][1] == answers[i]){
     // rightAnswers.push(questions[i][0]) 
     console.log("success!");
  }else{
     console.log("bummer");
  }
  
}