如果/ else聲明直接去別的

Question

我的if/else語句直接去別的，我似乎無法弄清楚爲什麼。這裏是我的代碼：

var sentiment = require ('sentiment'); 
var twitterSentiment; 
var geoColor; 
var results; 
var twit = new twitter({ 
    consumer_key: credentials.consumer_key, 
    consumer_secret: credentials.consumer_secret, 
    access_token_key: credentials.access_token_key, 
    access_token_secret: credentials.access_token_secret 
}); 

twit.stream(
    'statuses/filter', 
    { 'locations': location }, 
    function(stream) { 
     stream.on('data', function(tweet) { 
      console.log(tweet.text); 
      results = sentiment (tweet.text); 
      twitterSentiment = results; 


      //Comparison of Sentiment Scores 
       if (twitterSentiment == 0) { 
       geoColor = '#B5B5B5'; 
       } 

      else if (twitterSentiment < 0) { 
       geoColor = '#FC0828'; 
      } 
      else { 
       geoColor = '#00DE1E'; 
      } 

      console.log (geoColor);   
     }); 
    }); 

這是一個例子輸出：

omg yes!! 
#00DE1E 
Do you think will actually understand? I want to ask mine the same question. Just not sure I'm ready to have that conversation. 
#00DE1E 
A thing of beauty by: 
@youtube 
#00DE1E 
do you still do this?? 
#00DE1E 

正如你可以看到所有的微博都被只用一種顏色標識;好像我的if/else聲明沒有正確實現？

當我改變console.log (geoColor);到console.log (results);這是我的輸出：

omg yes!! 
{ score: 1, 
    comparative: 0.25, 
    tokens: [ 'omg', 'yes' ], 
    words: [ 'yes' ], 
    positive: [ 'yes' ], 
    negative: [] } 

Do you think will actually understand? I want to ask mine the same question. Just not sure I'm ready to have that conversation. 
{ score: 1, 
    comparative: 0.041666666666666664, 
    tokens: 
    [ 
    'do', 
    'you', 
    'think', 
    'will', 
    'actually', 
    'understand', 
    'i', 
    'want', 
    'to', 
    'ask', 
    'mine', 
    'the', 
    'same', 
    'question', 
    'just', 
    'not', 
    'sure', 
    'i\'m', 
    'ready', 
    'to', 
    'have', 
    'that', 
    'conversation' ], 
    words: [ 'want' ], 
    positive: [ 'want' ], 
    negative: [] } 

A thing of beauty by: 
@youtube 
{ score: 3, 
    comparative: 0.25, 
    tokens: 
    [ 'a', 
    'thing', 
    'of', 
    'beauty', 
    'by', 
    'youtube', ], 
    words: [ 'beauty' ], 
    positive: [ 'beauty' ], 
    negative: [] } 

do you still do this?? 
{ score: 0, 
    comparative: 0, 
    tokens: 
    [ 
    'do', 
    'you', 
    'still', 
    'do', 
    'this' ], 
    words: [], 
    positive: [], 
    negative: [] } 

正如你可以看到每個鳴叫分別擁有1,1,3,0他們個人的情感分那麼，爲什麼我的if/else語句無視這些數字？

我可以在我的代碼中更改哪些內容，以便我的if/else語句正確實現並考慮推文的情感分數？我的目標是爲每條推文輸出適當的顏色。

Answer 1

您正在將twitterSentiment設置爲結果對象，並將整個對象而不僅僅是分數進行比較。將您的代碼更改爲：

if (twitterSentiment.score == 0) { 
    geoColor = '#B5B5B5'; 
} 

else if (twitterSentiment.score < 0) { 
    geoColor = '#FC0828'; 
} 
else { 
    geoColor = '#00DE1E'; 
} 

Answer 2

您的變種results是一個對象，它包含許多其他屬性。在JavaScript中，「if」子句將始終爲非空對象實例返回「true」。將一個對象與一個數字進行比較時 - 非基本對象的任何實例將返回1。

正如你所說，你想比較你的score屬性的值，所以你需要做的是在你的if子句中引用你的results.score。

更改爲

twitterSentiment = results.score; 

應該解決您的問題。