# 如何通过日期属性对数组进行排序

2020/09/21 20:01 · javascript ·  · 0评论

``var array = [{id: 1, date: Mar 12 2012 10:00:00 AM}, {id: 2, date: Mar 8 2012 08:00:00 AM}];``

## 最简单的答案

``````array.sort(function(a,b){
// Turn your strings into dates, and then subtract them
// to get a value that is either negative, positive, or zero.
return new Date(b.date) - new Date(a.date);
});``````

## 更通用的答案

``````array.sort(function(o1,o2){
if (sort_o1_before_o2)    return -1;
else if(sort_o1_after_o2) return  1;
else                      return  0;
});``````

``````array.sort(function(o1,o2){
return sort_o1_before_o2 ? -1 : sort_o1_after_o2 ? 1 : 0;
});``````

## 通用，有力的答案

``````(function(){
if (typeof Object.defineProperty === 'function'){
try{Object.defineProperty(Array.prototype,'sortBy',{value:sb}); }catch(e){}
}
if (!Array.prototype.sortBy) Array.prototype.sortBy = sb;

function sb(f){
for (var i=this.length;i;){
var o = this[--i];
this[i] = [].concat(f.call(o,o,i),o);
}
this.sort(function(a,b){
for (var i=0,len=a.length;i<len;++i){
if (a[i]!=b[i]) return a[i]<b[i]?-1:1;
}
return 0;
});
for (var i=this.length;i;){
this[--i]=this[i][this[i].length-1];
}
return this;
}
})();``````

``array.sortBy(function(o){ return o.date });``

``array.sortBy(function(o){ return new Date( o.date ) });``

``````// Sort by date, then score (reversed), then name
array.sortBy(function(o){ return [ o.date, -o.score, o.name ] };``````

@Phrogz的答案都很棒，但这是一个很棒的，更简洁的答案：

``array.sort(function(a,b){return a.getTime() - b.getTime()});``

``array.sort((a,b)=>a.getTime()-b.getTime());``

``````var array = [{id: 1, date:'Mar 12 2012 10:00:00 AM'}, {id: 2, date:'Mar 8 2012 08:00:00 AM'}];

array.sort(function(a, b) {
var c = new Date(a.date);
var d = new Date(b.date);
return c-d;
});``````

``var array = [{id: 1, date: "Mar 12 2012 10:00:00 AM"},{id: 2, date: "Mar 28 2012 08:00:00 AM"}];``

``````function sortFunction(a,b){
var dateA = new Date(a.date).getTime();
var dateB = new Date(b.date).getTime();
return dateA > dateB ? 1 : -1;
};

var array = [{id: 1, date: "Mar 12 2012 10:00:00 AM"},{id: 2, date: "Mar 28 2012 08:00:00 AM"}];
array.sort(sortFunction);​``````

## 创建排序功能

``````var sortBy = (function () {
var toString = Object.prototype.toString,
// default parser function
parse = function (x) { return x; },
// gets the item to be sorted
getItem = function (x) {
var isObject = x != null && typeof x === "object";
var isProp = isObject && this.prop in x;
return this.parser(isProp ? x[this.prop] : x);
};

/**
* Sorts an array of elements.
*
* @param {Array} array: the collection to sort
* @param {Object} cfg: the configuration options
* @property {String}   cfg.prop: property name (if it is an Array of objects)
* @property {Boolean}  cfg.desc: determines whether the sort is descending
* @property {Function} cfg.parser: function to parse the items to expected type
* @return {Array}
*/
return function sortby (array, cfg) {
if (!(array instanceof Array && array.length)) return [];
if (toString.call(cfg) !== "[object Object]") cfg = {};
if (typeof cfg.parser !== "function") cfg.parser = parse;
cfg.desc = !!cfg.desc ? -1 : 1;
return array.sort(function (a, b) {
a = getItem.call(cfg, a);
b = getItem.call(cfg, b);
return cfg.desc * (a < b ? -1 : +(a > b));
});
};

}());``````

## 设置未排序的数据

``````var data = [
{date: "2011-11-14T17:25:45Z", quantity: 2, total: 200, tip: 0,   type: "cash"},
{date: "2011-11-14T16:28:54Z", quantity: 1, total: 300, tip: 200, type: "visa"},
{date: "2011-11-14T16:30:43Z", quantity: 2, total: 90,  tip: 0,   type: "tab"},
{date: "2011-11-14T17:22:59Z", quantity: 2, total: 90,  tip: 0,   type: "tab"},
{date: "2011-11-14T16:53:41Z", quantity: 2, total: 90,  tip: 0,   type: "tab"},
{date: "2011-11-14T16:48:46Z", quantity: 2, total: 90,  tip: 0,   type: "tab"},
{date: "2011-11-31T17:29:52Z", quantity: 1, total: 200, tip: 100, type: "visa"},
{date: "2011-11-01T16:17:54Z", quantity: 2, total: 190, tip: 100, type: "tab"},
{date: "2011-11-14T16:58:03Z", quantity: 2, total: 90,  tip: 0,   type: "tab"},
{date: "2011-11-14T16:20:19Z", quantity: 2, total: 190, tip: 100, type: "tab"},
{date: "2011-11-14T17:07:21Z", quantity: 2, total: 90,  tip: 0,   type: "tab"},
{date: "2011-11-14T16:54:06Z", quantity: 1, total: 100, tip: 0,   type: "cash"}
];``````

## 使用它

``````//sort the object by a property (ascending)
//sorting takes into account uppercase and lowercase
sortBy(data, { prop: "date" });``````

``````//sort the object by a property (descending)
//sorting ignores uppercase and lowercase
sortBy(data, {
prop: "date",
desc: true,
parser: function (item) {
//ignore case sensitive
return item.toUpperCase();
}
});``````

``````//sort the object by a property (ascending)
//sorting parses each item to Date type
sortBy(data, {
prop: "date",
parser: function (item) {
return new Date(item);
}
});``````

jsbin.com/lesebi

``````  sortByDate(arr) {
arr.sort(function(a,b){
});

return arr;
}``````

http://underscorejs.org/#sortBy

``````var log = [{date: '2016-01-16T05:23:38+00:00', other: 'sample'},
{date: '2016-01-13T05:23:38+00:00',other: 'sample'},
{date: '2016-01-15T11:23:38+00:00', other: 'sample'}];

console.log(_.sortBy(log, 'date'));``````

``````your_array.sort ( (a, b) => {
return new Date(a.DateTime) - new Date(b.DateTime);
});``````

``````let array = ["July 11, 1960", "February 1, 1974", "July 11, 1615", "October 18, 1851", "November 12, 1995"];

array.sort(function(date1, date2) {
date1 = new Date(date1);
date2 = new Date(date2);
if (date1 > date2) return 1;
if (date1 < date2) return -1;
})``````
``````Adding absolute will give better results

var datesArray =[
{"some":"data1","date": "2018-06-30T13:40:31.493Z"},
{"some":"data2","date": "2018-07-04T13:40:31.493Z"},
{"some":"data3","date": "2018-06-27T13:40:54.394Z"}
]

var sortedJsObjects = datesArray.sort(function(a,b){
return Math.abs(new Date(a.date) - new Date(b.date))
});``````

``````array.sort(function(a, b)
{
if (a.DueDate > b.DueDate) return 1;
if (a.DueDate < b.DueDate) return -1;
})``````

`````` myArray = [{transport: "Air",
created: "01/31/2020"},
{transport: "Air",
created: "01/30/2020"}]

myAarray.sort(function(a, b) {
var c = new Date(a.created);
var d = new Date(b.created);
return c-d;
});``````

``````//Sort by day, then month, then year
for(i=0;i<=2; i++){
dataCourses.sort(function(a, b){

a = a.lastAccessed.split("/");
b = b.lastAccessed.split("/");

return a[i]>b[i] ? -1 : a[i]<b[i] ? 1 : 0;
});
}``````

``````function schwartzianSort(array,f,asc){
for (var i=array.length;i;){
var o = array[--i];
array[i] = [].concat(f.call(o,o,i),o);
}
array.sort(function(a,b){
for (var i=0,len=a.length;i<len;++i){
if (a[i]!=b[i]) return a[i]<b[i]?asc?-1:1:1;
}
return 0;
});
for (var i=array.length;i;){
array[--i]=array[i][array[i].length-1];
}
return array;
}``````

``````function schwartzianSort(array, f, asc) {
for (var i = array.length; i;) {
var o = array[--i];
array[i] = [].concat(f.call(o, o, i), o);
}
array.sort(function(a, b) {
for (var i = 0, len = a.length; i < len; ++i) {
if (a[i] != b[i]) return a[i] < b[i] ? asc ? -1 : 1 : 1;
}
return 0;
});
for (var i = array.length; i;) {
array[--i] = array[i][array[i].length - 1];
}
return array;
}

arr = []
arr.push({
date: new Date(1494434112806)
})
arr.push({
date: new Date(1494434118181)
})
arr.push({
date: new Date(1494434127341)
})

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

arr = schwartzianSort(arr, function(o) {
return o.date
}, false)
console.log("DESC", JSON.stringify(arr));

arr = schwartzianSort(arr, function(o) {
return o.date
}, true)
console.log("ASC", JSON.stringify(arr));``````

``````function sortByDateSpecificity(a, b) {
const aLength = a.date.length
const bLength = b.date.length
const aDate = a.date + (aLength < 10 ? '-12-31'.slice(-10 + aLength) : '')
const bDate = b.date + (bLength < 10 ? '-12-31'.slice(-10 + bLength) : '')
return new Date(aDate) - new Date(bDate)
}``````
``````["12 Jan 2018" , "1 Dec 2018", "04 May 2018"].sort(function(a,b) {
return new Date(a).getTime() - new Date(b).getTime()
})``````

``````var isDescending = true; //set to false for ascending
console.log(["8/2/2020","8/1/2020","8/13/2020", "8/2/2020"].sort((a,b) => isDescending ? new Date(b).getTime() - new Date(a).getTime() : new Date(a).getTime() - new Date(b).getTime()));``````

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