JavaScript 硬代码循环问题。设置 grandchildren 到 children 到 parent

Question

我认为很简单的事情结果却让我头疼了好几天。我可以让它工作 hard-coding 但不能让它循环工作。这就是我的 hard-coded.

         let vt = [{animal:"dog"},{color:"green"},{tail:"curly"}];

         vt[0]["children"]={pupname:"harry",pupcolor:"red"}
         vt[0]["children"]["children"]={pupname:"joe",pupcolor:"brown"}
         vt[0]["children"]["children"]["children"]={pupname:"itchy",pupcolor:"black"}

console.log(JSON.stringify(vt));

这会给我我想要的。

[{
    "animal": "dog",
    "children": {
        "pupname": "harry",
        "pupcolor": "red",
        "children": {
            "pupname": "joe",
            "pupcolor": "brown",
            "children": {
                "pupname": "itchy",
                "pupcolor": "black"
            }
        }
    }
}, {
    "color": "green"
}, {
    "tail": "curly"
}]

这是一个简化版本，数组中可以有很多 objects。我无法让它循环工作。 children 键的数量不断增加是我的问题，或者我可能已经偏离轨道了。欢迎任何指点

Answer 1

你可以做到：

const vt = [ { animal: 'dog' }, { color: 'green' }, { tail: 'curly' } ];

[ { pupname:'harry', pupcolor:'red'   }
, { pupname:'joe',   pupcolor:'brown' }
, { pupname:'itchy', pupcolor:'black' }
].reduce((a,c)=>a.children = c, vt[0]);

console.log( vt );

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