Question

这是示例（从谷歌浏览器中的控制台复制）：

var obj = [
    {word: "a"},
    {word: "b"}
];
obj.map(function(i){return i.word;})
result: ["a", "b"]

我需要这样做，但为此：

var o = [{
    user: "a",    
    keywords: [
         {word: "a"},
         {word: "b"},
         {word: "c"}
     ]
}];

我需要在keywords中映射o。请帮我解决这个问题。

Answer 1

这应该有效：

＆＃13;

var o = [{
    user: "a",    
    keywords: [
         {word: "a"},
         {word: "b"},
         {word: "c"}
     ]
}];

var arr = [];
o.forEach(function(k){
  k.keywords.forEach(function(w){
    arr.push(w);
  });
});


document.write(JSON.stringify(arr))

＆＃13;

Answer 2

＆＃13;

<script>
    var o = [{
    user: "a",    
    keywords: [
         {word: "a"},
         {word: "b"},
         {word: "c"}
     ]
}];
    var words=[];
    o.map(function(i){ words.push(i.keywords);});
    console.log(words[0].map(function(i){return i.word;}));
  </script>

＆＃13;

对象中对象的javascript映射

2 个答案: