为什么当我检查循环中的字符串是否包含在字符串数组中时，所有字符串都为假？

Question

I'm trying to check if a state is included in an array of state strings, but for some reason it's always equating to false. Am I writing this right?

I've tried using underscore contains, but it does the same thing

T.get('followers/list', {screen_name: ''}, function(err, data, response){
  let states = [
  "AK",
  "AL",
  "AR",
  "AS",
  "AZ",
  "CA",
  "CO",
  "CT",
  "DC",
  "DE",
  "FL",
  "GA",
  "GU",
  "HI",
  "IA",
  "ID",
  "IL",
  "IN",
  "KS",
  "KY",
  "LA",
  "MA",
  "MD",
  "ME",
  "MI",
  "MN",
  "MO",
  "MS",
  "MT",
  "NC",
  "ND",
  "NE",
  "NH",
  "NJ",
  "NM",
  "NV",
  "NY",
  "OH",
  "OK",
  "OR",
  "PA",
  "PR",
  "RI",
  "SC",
  "SD",
  "TN",
  "TX",
  "UT",
  "VA",
  "VI",
  "VT",
  "WA",
  "WI",
  "WV",
  "WY"
]
  _.each(data, loc => {
    _.each(loc, data => {
      if(data.location){
        var statesyes = states.includes(JSON.stringify(data.location.split(', ').pop()));
        console.log(statesyes);
      };
    })
  })
})

For instance, I should be getting back true for some of these and false for others, which is the goal. But I'm only getting false.

false
"South Africa"
false
"South Africa"
false
"The dark part of the web"
false
"MI"
false
"FL"
false
"United States"
false
"WV"
false
"TX"
false
"Iowa"
false
"IA"
false
"MN"
false
"IA"
false
"Big Sky Country"
false
"USA"
false
"MO"
false
"IA"
false

I'm getting false for all of them.

Answer 1

Invoking JSON.stringify on the value returned from data.location.split(', ').pop() means that you're comparing with quoted text.

JSON.stringify("Hello") -> "\"Hello\""

Remove the call to JSON.stringify