基于对象属性值的JS对象转换

Question

我已经看到很多与js对象排序有关的其他问题，其中大多数都倾向于建议使用.map方法根据属性的值对对象或对象数组进行排序，但我＆＃39 ;我试图实现略微不同的东西。

我试图改变这种对象格式：

{
    "commits": [
        {
            "repository": "example-repo-1",
            "commit_hash": "example-hash-1"
        },
        {
            "repository": "example-repo-1",
            "commit_hash": "example-hash-1.2"
        },
        {
            "repository": "example-repo-2",
            "commit_hash": "example-hash-2"
        }
    ]
}

进入使用＆＃39; repository＆＃39;的值格式化的对象像这样：

{
    "example-repo-1": [
        {
            "repository": "example-repo-1",
            "commit_hash": "example-hash-1"
        },
        {
            "repository": "example-repo-1",
            "commit_hash": "example-hash-1.2"
        }
    ],
    "example-repo-2": [    
        {
            "repository": "example-repo-2",
            "commit_hash": "example-hash-2"
        }
    ]
}

所以我需要获取我的原始对象，它是一个带有其他对象数组的对象，以返回一个包含大量数组的对象，这些数组以repository属性的值命名并包含与该属性值匹配的每个对象。

Answer 1

使用 Array#forEach 方法

var data = {
  "commits": [{
    "repository": "example-repo-1",
    "commit_hash": "example-hash-1"
  }, {
    "repository": "example-repo-1",
    "commit_hash": "example-hash-1.2"
  }, {
    "repository": "example-repo-2",
    "commit_hash": "example-hash-2"
  }]
};

var res = {};

data.commits.forEach(function(v) {
  // define the pproperty if already not defined
  res[v.repository] = res[v.repository] || [];
  // push the reference to the object or recreate depense on your need
  res[v.repository].push(v);
})

console.log(res);

或使用 Array#reduce 方法

var data = {
  "commits": [{
    "repository": "example-repo-1",
    "commit_hash": "example-hash-1"
  }, {
    "repository": "example-repo-1",
    "commit_hash": "example-hash-1.2"
  }, {
    "repository": "example-repo-2",
    "commit_hash": "example-hash-2"
  }]
};

var res = data.commits.reduce(function(obj, v) {
  // define property if not defined
  obj[v.repository] = obj[v.repository] || [];
  // push the object
  obj[v.repository].push(v);
  // return the result object
  return obj;
}, {})

console.log(res);

Answer 2

尝试这样的事情

＆＃13;

＆＃13;

var input = {
    "commits": [
        {
            "repository": "example-repo-1",
            "commit_hash": "example-hash-1"
        },
        {
            "repository": "example-repo-1",
            "commit_hash": "example-hash-1.2"
        },
        {
            "repository": "example-repo-2",
            "commit_hash": "example-hash-2"
        }
    ]
};

var output = {};

input.commits.forEach(function(el){
  if(!output[el.repository])
    output[el.repository] = [];
   output[el.repository].push[el];
  })
console.log(output);

＆＃13;

＆＃13;

＆＃13;