Question

我有一个像这样的JSON对象：

{  
   "Sat Jul 28 2018 03:36:36 GMT-0700 (Pacific Daylight Time)":[  
      { ... },
      { ... }
   ],
   "Fri Aug 03 2018 19:07:14 GMT-0700 (Pacific Daylight Time)":[  
      { ... }
   ],
   "Sat Aug 18 2018 17:25:50 GMT-0700 (Pacific Daylight Time)":[  
      { ... }
   ]
}

如何按月将其返回到分组对象中？

Answer 1

尝试此操作（带破折号）：

$('#password, #confirm_password').on('keyup', function () {
    if ($('#password').val() == $('#confirm_password').val()) {
        $('#message').html('Matching').css('color', 'green');
        $("#submit").prop('disabled',false);
    } else {
        $('#message').html('Not Matching').css('color', 'red');
        $("#submit").prop('disabled',true);
    }
});

输出：

var input = {
  "Sat Jul 28 2018 03:36:36 GMT-0700 (Pacific Daylight Time)": [
    "test", "tester"
  ],
  "Fri Aug 03 2018 19:07:14 GMT-0700 (Pacific Daylight Time)": [
    "tester1"
  ],
  "Sat Aug 18 2018 17:25:50 GMT-0700 (Pacific Daylight Time)": [
    "tester2"
  ]
}
var groupedKeys = _.groupBy(Object.keys(input), function(key) {
  return key.substring(4, 7)
});
var groupedEntries = _.map(groupedKeys, (values, key) => {
  values = _.map(values, (value) => {
    return input[value]
  });
  return {
    key: key,
    values: _.flattenDeep(values)
  };
});
var result = _.reduce(groupedEntries, (result, obj) => {
  result[obj.key] = obj.values;
  return result;
}, {})
console.log(result);

Answer 2

浏览对象，然后提取月份并创建新对象：

let jsonObj = {  
   "Sat Jul 28 2018 03:36:36 GMT-0700 (Pacific Daylight Time)":[{},{}],
   "Fri Aug 03 2018 19:07:14 GMT-0700 (Pacific Daylight Time)":[{}],
   "Sat Aug 18 2018 17:25:50 GMT-0700 (Pacific Daylight Time)":[{}]
};
let grouped = Object.keys(jsonObj).reduce((prev,key,i,all)=>{
    let monthArr = {};
    if(typeof prev === 'string'){
        monthArr[prev.substr(4,3)] = jsonObj[prev];
        prev = {};
    }
    monthArr[key.substr(4,3)] = jsonObj[key];
    return {...prev,...monthArr};
});

如何按月份对json对象的日期进行分组？

2 个答案: