Question

我有以下对象

0:Object
    April:2055.78
    August:2511.18
    December:1833.21
    February:2605.03
    January:1964.85
    July:2337.65
    June:2417.68
    March:1953.51
    May:2203.28
    November:2433.3
    October:1600.67
    September:1874.85

我需要数组中对象的值，但是需要按月排序，Jan-＆gt;分解

尝试过几种不同的方法，但仍然无法获得正确的结果。

提前致谢

Answer 1

obj={
April:2055.78,
August:2511.18,
December:1833.21,
February:2605.03,
January:1964.85,
July:2337.65,
June:2417.68,
March:1953.51,
May:2203.28,
November:2433.3,
October:1600.67,
September:1874.85
};

console.log(["January","February","March","April","May","June","July","August","September","October","November","December"].map(month=>obj[month]));

Theres没有其他方法让引擎知道如何排序（除了时间昂贵的日期解析），你只能告诉它确切的月份顺序......

Answer 2

我就这样做了：我创建了一个带有缩写月份名称的有序数组。然后我按顺序循环遍历该数组，如果数组值是对象键的子字符串，那么我将该键值对推入一个新对象。打印对象键时，它会按顺序打印出来。

var m = ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'];

var obj = {
April:2055.78,
August:2511.18,
December:1833.21,
February:2605.03,
January:1964.85,
July:2337.65,
June:2417.68,
March:1953.51,
May:2203.28,
November:2433.3,
October:1600.67,
September:1874.85
};

var ordered = {};

for(var i = 0; i < m.length; i++){
	for(key in obj){
  	if(key.includes(m[i])){
    	ordered[key] = obj[key];
      break;
    }
  }
}

for(key in ordered){
	console.log(key);
}

Answer 3

您可以使用简单的forEach和数月的数组来执行此操作：

var months = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
var results = [];

months.forEach(function(month){
    results.push(obj[month]);
});

<强>演示：

var months = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];

var obj={
April:2055.78,
August:2511.18,
December:1833.21,
February:2605.03,
January:1964.85,
July:2337.65,
June:2417.68,
March:1953.51,
May:2203.28,
November:2433.3,
October:1600.67,
September:1874.85
};

var results = [];

months.forEach(function(month){
    results.push(obj[month]);
});
console.log(results);

Answer 4

假设您只想要几个月而不是值：

将您的对象放入变量（可选）

var months = {the months object}

然后将密钥提取到数组中并进行排序。

var sortedMonths = Object.keys(months).sort()

JavaScript，按特定顺序对象到数组

4 个答案: